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Illinois Tool Works Inc – ‘10-K’ for 12/31/19 – ‘EX-101.LAB’

On:  Friday, 2/14/20, at 3:16pm ET   ·   For:  12/31/19   ·   Accession #:  49826-20-20   ·   File #:  1-04797

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  As Of               Filer                 Filing    For·On·As Docs:Size

 2/14/20  Illinois Tool Works Inc           10-K       12/31/19  114:17M

Annual Report   —   Form 10-K   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   2.22M 
 2: EX-4.J      Instrument Defining the Rights of Security Holders  HTML     37K 
 3: EX-4.K      Instrument Defining the Rights of Security Holders  HTML     95K 
 4: EX-4.L      Instrument Defining the Rights of Security Holders  HTML     93K 
 5: EX-4.M      Instrument Defining the Rights of Security Holders  HTML     93K 
 6: EX-21       Subsidiaries List                                   HTML    171K 
 7: EX-23       Consent of Experts or Counsel                       HTML     32K 
 8: EX-24       Power of Attorney                                   HTML     63K 
 9: EX-31       Certification -- §302 - SOA'02                      HTML     47K 
10: EX-32       Certification -- §906 - SOA'02                      HTML     33K 
76: R1          Cover Page                                          HTML    117K 
35: R2          Statement of Income                                 HTML     74K 
50: R3          Statement of Comprehensive Income                   HTML     48K 
111: R4          Statement of Financial Position                     HTML    130K  
77: R5          Statement of Financial Position (Parenthetical)     HTML     38K 
37: R6          Statement of Changes in Stockholders' Equity        HTML     74K 
52: R7          Statement of Changes in Stockholders' Equity        HTML     33K 
                (Parenthetical)                                                  
113: R8          Statement of Cash Flows                             HTML    145K  
74: R9          Description of Business and Summary of Significant  HTML    127K 
                Accounting Policies                                              
80: R10         Divestitures                                        HTML     61K 
92: R11         Operating Revenue                                   HTML     87K 
57: R12         Legal Settlement                                    HTML     34K 
21: R13         Other Income (Expense)                              HTML     59K 
79: R14         Income Taxes                                        HTML    207K 
91: R15         Net Income Per Share                                HTML     59K 
56: R16         Goodwill and Intangible Assets                      HTML    144K 
20: R17         Leases                                              HTML     54K 
78: R18         Debt                                                HTML    136K 
93: R19         Pension and Other Postretirement Benefits           HTML    349K 
48: R20         Commitments and Contingencies                       HTML     34K 
40: R21         Stockholders' Equity                                HTML     82K 
75: R22         Stock-Based Compensation                            HTML     90K 
114: R23         Other Balance Sheet Information                     HTML     84K  
47: R24         Segment Information                                 HTML    172K 
38: R25         Selected Quarterly Financial Data (Unaudited)       HTML     79K 
73: R26         Description of Business and Summary of Significant  HTML    111K 
                Accounting Policies (Policies)                                   
112: R27         Description of Business and Summary of Significant  HTML    103K  
                Accounting Policies (Tables)                                     
51: R28         Divestitures (Tables)                               HTML     60K 
36: R29         Operating Revenue (Tables)                          HTML     54K 
16: R30         Other Income (Expense) (Tables)                     HTML     54K 
54: R31         Income Taxes (Tables)                               HTML    202K 
94: R32         Net Income Per Share (Tables)                       HTML     57K 
81: R33         Goodwill and Intangible Assets (Tables)             HTML    194K 
18: R34         Leases (Tables)                                     HTML     51K 
55: R35         Debt (Tables)                                       HTML    120K 
95: R36         Pension and Other Postretirement Benefits (Tables)  HTML    354K 
82: R37         Stockholders' Equity (Tables)                       HTML     68K 
19: R38         Stock-Based Compensation (Tables)                   HTML     87K 
53: R39         Other Balance Sheet Information (Tables)            HTML     85K 
32: R40         Segment Information (Tables)                        HTML    170K 
45: R41         Selected Quarterly Financial Data (Unaudited)       HTML     78K 
                (Tables)                                                         
104: R42         Description of Business and Summary of Significant  HTML     83K  
                Accounting Policies - Narrative (Details)                        
65: R43         Description of Business and Summary of Significant  HTML     46K 
                Accounting Policies - Schedule of Changes in                     
                Allowance for Doubtful Accounts (Details)                        
33: R44         Description of Business and Summary of Significant  HTML     45K 
                Accounting Policies - Schedule of Inventory                      
                (Details)                                                        
46: R45         Description of Business and Summary of Significant  HTML     51K 
                Accounting Policies - Schedule of Net Plant and                  
                Equipment (Details)                                              
105: R46         Description of Business and Summary of Significant  HTML     40K  
                Accounting Policies - Schedule of Ranges of Useful               
                Lives (Details)                                                  
67: R47         Description of Business and Summary of Significant  HTML     42K 
                Accounting Policies - Schedule of Changes in                     
                Accrued Warranties (Details)                                     
34: R48         Divestitures (Details)                              HTML     72K 
44: R49         Divestitures - Summary of Assets and Liabilities    HTML     71K 
                Related to Held For Sale Businesses (Details)                    
63: R50         Operating Revenue (Details)                         HTML     34K 
28: R51         Operating Revenue - Summary of Operating Revenue    HTML     62K 
                by Product Category (Details)                                    
84: R52         Legal Settlement (Details)                          HTML     38K 
97: R53         Other Income (Expense) - Schedule of Other Income   HTML     55K 
                (Expense) (Details)                                              
62: R54         Other Income (Expense) - Narrative (Details)        HTML     62K 
27: R55         Income Taxes - Narrative (Details)                  HTML     77K 
83: R56         Income Taxes - Schedule of Components of Provision  HTML     66K 
                for Income Taxes (Details)                                       
96: R57         Income Taxes - Schedule of Income Before Taxes for  HTML     77K 
                Domestic and Foreign Operations and Reconciliation               
                Between U.S. Federal Statutory Tax Rate and                      
                Effective Tax Rate (Details)                                     
64: R58         Income Taxes - Schedule of Components of Deferred   HTML    101K 
                Income Tax Assets and Liabilities (Details)                      
26: R59         Income Taxes - Schedule of Net Operating Loss       HTML     47K 
                Carryforwards (Details)                                          
71: R60         Income Taxes - Schedule of Changes in Amount of     HTML     49K 
                Unrecognized Tax Benefits (Details)                              
108: R61         Income Taxes - Summary of Open Tax Years (Details)  HTML     48K  
42: R62         Net Income Per Share (Details)                      HTML     64K 
30: R63         Net Income Per Share - Narrative (Details)          HTML     34K 
70: R64         Goodwill and Intangible Assets - Schedule of        HTML     71K 
                Changes in Carrying Amount of Goodwill (Details)                 
107: R65         Goodwill and Intangible Assets - Schedule of        HTML     59K  
                Intangible Assets (Details)                                      
41: R66         Goodwill and Intangible Assets - Narrative          HTML     36K 
                (Details)                                                        
29: R67         Goodwill and Intangible Assets - Schedule of        HTML     43K 
                Estimated Future Amortization Expense of                         
                Intangible Assets (Details)                                      
68: R68         Leases - Narrative (Details)                        HTML     57K 
110: R69         Leases - Schedule of Future Maturities of           HTML     54K  
                Operating Lease Liabilities (Details)                            
101: R70         Leases - Schedule of Minimum Lease Payments under   HTML     51K  
                Operating Leases (Details)                                       
86: R71         Debt - Schedule of Short-term Debt (Details)        HTML     38K 
23: R72         Debt - Narrative (Details)                          HTML    174K 
59: R73         Debt - Schedule of Long-term Debt at Carrying       HTML    135K 
                Value and Fair Value (Details)                                   
102: R74         Debt - Schedule of Future Maturities of Long-term   HTML     53K  
                Debt Including Current Maturities of Long-term                   
                Debt (Details)                                                   
87: R75         Pension and Other Postretirement Benefits -         HTML     55K 
                Narrative (Details)                                              
24: R76         Pension and Other Postretirement Benefits -         HTML     56K 
                Summary of Information Regarding Net Periodic                    
                Benefit Cost Included in Statement of Income                     
                Related to Significant Defined Benefit Pension and               
                Other Postretirement Benefit Plans (Details)                     
60: R77         Pension and Other Postretirement Benefits - Change  HTML     68K 
                in Plan Benefit Obligations (Details)                            
99: R78         Pension and Other Postretirement Benefits - Change  HTML    117K 
                in Plan Assets and Reconciliation of Funded Status               
                (Details)                                                        
90: R79         Pension and Other Postretirement Benefits -         HTML     70K 
                Assumptions Used and Trend Rates (Details)                       
100: R80         Pension and Other Postretirement Benefits -         HTML     99K  
                Benefit Plan Assets by Category and Valuation                    
                Methodology (Details)                                            
85: R81         Pension and Other Postretirement Benefits -         HTML     49K 
                Expected Future Benefit Payments (Details)                       
22: R82         Stockholders' Equity - Narrative (Details)          HTML     91K 
58: R83         Stockholders' Equity - Changes in Accumulated       HTML     60K 
                Other Comprehensive Income (Loss) (Details)                      
103: R84         Stock-Based Compensation - Narrative (Details)      HTML     71K  
88: R85         Stock-Based Compensation - Summary of Stock-based   HTML     39K 
                Compensation Expense (Details)                                   
25: R86         Stock-Based Compensation - Summary of Activity      HTML     50K 
                Related to Non-vested RSUs (Details)                             
61: R87         Stock-Based Compensation - Summary of Stock Option  HTML     74K 
                Activity (Details)                                               
98: R88         Stock-Based Compensation - Summary of Assumptions   HTML     48K 
                Used in Option Valuations (Details)                              
89: R89         Other Balance Sheet Information (Details)           HTML    102K 
72: R90         Segment Information - Narrative (Details)           HTML     47K 
109: R91         Segment Information - Summary of Segment            HTML    100K  
                Information (Details)                                            
43: R92         Segment Information - Summary of Enterprise-wide    HTML     54K 
                Information (Details)                                            
31: R93         Selected Quarterly Financial Data (Unaudited)       HTML     60K 
                (Details)                                                        
106: R9999       Uncategorized Items - itw-20191231x10k.htm          HTML     32K  
49: XML         IDEA XML File -- Filing Summary                      XML    207K 
39: XML         XBRL Instance -- itw-20191231x10k_htm                XML   4.72M 
17: EXCEL       IDEA Workbook of Financial Reports                  XLSX    125K 
12: EX-101.CAL  XBRL Calculations -- itw-20191231_cal                XML    383K 
13: EX-101.DEF  XBRL Definitions -- itw-20191231_def                 XML    888K 
14: EX-101.LAB  XBRL Labels -- itw-20191231_lab                      XML   2.53M 
15: EX-101.PRE  XBRL Presentations -- itw-20191231_pre               XML   1.49M 
11: EX-101.SCH  XBRL Schema -- itw-20191231                          XSD    226K 
66: JSON        XBRL Instance as JSON Data -- MetaLinks              538±   807K 
69: ZIP         XBRL Zipped Folder -- 0000049826-20-000020-xbrl      Zip    526K 


‘EX-101.LAB’   —   XBRL Labels — itw-20191231_lab


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<link:label id="lab_itw_ConsolidationAndTranslationPolicyTextBlock_6136D10CE5B62DDBF6664A6D20E93141_documentation_en-US" xlink:label="lab_itw_ConsolidationAndTranslationPolicyTextBlock_6136D10CE5B62DDBF6664A6D20E93141" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Consolidation and translation. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_ConsolidationAndTranslationPolicyTextBlock" xlink:label="loc_itw_ConsolidationAndTranslationPolicyTextBlock_6136D10CE5B62DDBF6664A6D20E93141" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_ConsolidationAndTranslationPolicyTextBlock_6136D10CE5B62DDBF6664A6D20E93141" xlink:to="lab_itw_ConsolidationAndTranslationPolicyTextBlock_6136D10CE5B62DDBF6664A6D20E93141" xlink:type="arc"/>
<link:label id="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_FE486E04AF40666D46C24A6D20EAA90E_terseLabel_en-US" xlink:label="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_FE486E04AF40666D46C24A6D20EAA90E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Reclassifications </link:label>
<link:label id="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_FE486E04AF40666D46C24A6D20EAA90E_label_en-US" xlink:label="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_FE486E04AF40666D46C24A6D20EAA90E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Reclassification, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PriorPeriodReclassificationAdjustmentDescription" xlink:label="loc_us-gaap_PriorPeriodReclassificationAdjustmentDescription_FE486E04AF40666D46C24A6D20EAA90E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PriorPeriodReclassificationAdjustmentDescription_FE486E04AF40666D46C24A6D20EAA90E" xlink:to="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_FE486E04AF40666D46C24A6D20EAA90E" xlink:type="arc"/>
<link:label id="lab_us-gaap_UseOfEstimates_66A426421644DCD4C4844A6D20EAA9A2_terseLabel_en-US" xlink:label="lab_us-gaap_UseOfEstimates_66A426421644DCD4C4844A6D20EAA9A2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Use of Estimates </link:label>
<link:label id="lab_us-gaap_UseOfEstimates_66A426421644DCD4C4844A6D20EAA9A2_label_en-US" xlink:label="lab_us-gaap_UseOfEstimates_66A426421644DCD4C4844A6D20EAA9A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Use of Estimates, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="loc_us-gaap_UseOfEstimates_66A426421644DCD4C4844A6D20EAA9A2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UseOfEstimates_66A426421644DCD4C4844A6D20EAA9A2" xlink:to="lab_us-gaap_UseOfEstimates_66A426421644DCD4C4844A6D20EAA9A2" xlink:type="arc"/>
<link:label id="lab_us-gaap_BusinessCombinationsPolicy_6F5916A7D9CF87836EF44A6D20EAB98E_verboseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationsPolicy_6F5916A7D9CF87836EF44A6D20EAB98E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Acquisitions </link:label>
<link:label id="lab_us-gaap_BusinessCombinationsPolicy_6F5916A7D9CF87836EF44A6D20EAB98E_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationsPolicy_6F5916A7D9CF87836EF44A6D20EAB98E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Combinations Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BusinessCombinationsPolicy" xlink:label="loc_us-gaap_BusinessCombinationsPolicy_6F5916A7D9CF87836EF44A6D20EAB98E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationsPolicy_6F5916A7D9CF87836EF44A6D20EAB98E" xlink:to="lab_us-gaap_BusinessCombinationsPolicy_6F5916A7D9CF87836EF44A6D20EAB98E" xlink:type="arc"/>
<link:label id="lab_itw_OperatingRevenuesPolicyTextBlock_A6E19821E9E1982D0ED74A6D20EA5EED_verboseLabel_en-US" xlink:label="lab_itw_OperatingRevenuesPolicyTextBlock_A6E19821E9E1982D0ED74A6D20EA5EED" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Operating Revenue </link:label>
<link:label id="lab_itw_OperatingRevenuesPolicyTextBlock_A6E19821E9E1982D0ED74A6D20EA5EED_label_en-US" xlink:label="lab_itw_OperatingRevenuesPolicyTextBlock_A6E19821E9E1982D0ED74A6D20EA5EED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Revenues [Policy Text Block] </link:label>
<link:label id="lab_itw_OperatingRevenuesPolicyTextBlock_A6E19821E9E1982D0ED74A6D20EA5EED_documentation_en-US" xlink:label="lab_itw_OperatingRevenuesPolicyTextBlock_A6E19821E9E1982D0ED74A6D20EA5EED" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Operating revenues. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_OperatingRevenuesPolicyTextBlock" xlink:label="loc_itw_OperatingRevenuesPolicyTextBlock_A6E19821E9E1982D0ED74A6D20EA5EED" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_OperatingRevenuesPolicyTextBlock_A6E19821E9E1982D0ED74A6D20EA5EED" xlink:to="lab_itw_OperatingRevenuesPolicyTextBlock_A6E19821E9E1982D0ED74A6D20EA5EED" xlink:type="arc"/>
<link:label id="lab_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_B7EEBBEB77274E4273204A6D20EA01B7_verboseLabel_en-US" xlink:label="lab_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_B7EEBBEB77274E4273204A6D20EA01B7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Research and Development Expenses </link:label>
<link:label id="lab_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_B7EEBBEB77274E4273204A6D20EA01B7_label_en-US" xlink:label="lab_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_B7EEBBEB77274E4273204A6D20EA01B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Research, Development, and Computer Software, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock" xlink:label="loc_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_B7EEBBEB77274E4273204A6D20EA01B7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_B7EEBBEB77274E4273204A6D20EA01B7" xlink:to="lab_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_B7EEBBEB77274E4273204A6D20EA01B7" xlink:type="arc"/>
<link:label id="lab_us-gaap_AdvertisingCostsPolicyTextBlock_98AAE2C187EC626E14344A6D20EA19A4_verboseLabel_en-US" xlink:label="lab_us-gaap_AdvertisingCostsPolicyTextBlock_98AAE2C187EC626E14344A6D20EA19A4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Advertising Expenses </link:label>
<link:label id="lab_us-gaap_AdvertisingCostsPolicyTextBlock_98AAE2C187EC626E14344A6D20EA19A4_label_en-US" xlink:label="lab_us-gaap_AdvertisingCostsPolicyTextBlock_98AAE2C187EC626E14344A6D20EA19A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Advertising Cost [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdvertisingCostsPolicyTextBlock" xlink:label="loc_us-gaap_AdvertisingCostsPolicyTextBlock_98AAE2C187EC626E14344A6D20EA19A4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdvertisingCostsPolicyTextBlock_98AAE2C187EC626E14344A6D20EA19A4" xlink:to="lab_us-gaap_AdvertisingCostsPolicyTextBlock_98AAE2C187EC626E14344A6D20EA19A4" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncomeTaxPolicyTextBlock_E26F58DABBF73B9EFC254A6D20EA1513_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxPolicyTextBlock_E26F58DABBF73B9EFC254A6D20EA1513" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Income Taxes </link:label>
<link:label id="lab_us-gaap_IncomeTaxPolicyTextBlock_E26F58DABBF73B9EFC254A6D20EA1513_label_en-US" xlink:label="lab_us-gaap_IncomeTaxPolicyTextBlock_E26F58DABBF73B9EFC254A6D20EA1513" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="loc_us-gaap_IncomeTaxPolicyTextBlock_E26F58DABBF73B9EFC254A6D20EA1513" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxPolicyTextBlock_E26F58DABBF73B9EFC254A6D20EA1513" xlink:to="lab_us-gaap_IncomeTaxPolicyTextBlock_E26F58DABBF73B9EFC254A6D20EA1513" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_EA8F12BD9535B78030454A6D20EB91C7_verboseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_EA8F12BD9535B78030454A6D20EB91C7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash and Equivalents </link:label>
<link:label id="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_EA8F12BD9535B78030454A6D20EB91C7_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_EA8F12BD9535B78030454A6D20EB91C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="loc_us-gaap_CashAndCashEquivalentsPolicyTextBlock_EA8F12BD9535B78030454A6D20EB91C7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsPolicyTextBlock_EA8F12BD9535B78030454A6D20EB91C7" xlink:to="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_EA8F12BD9535B78030454A6D20EB91C7" xlink:type="arc"/>
<link:label id="lab_us-gaap_ReceivablesPolicyTextBlock_A1E624AAF8D67AD613E94A6D20EBDEEA_terseLabel_en-US" xlink:label="lab_us-gaap_ReceivablesPolicyTextBlock_A1E624AAF8D67AD613E94A6D20EBDEEA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Trade Receivables </link:label>
<link:label id="lab_us-gaap_ReceivablesPolicyTextBlock_A1E624AAF8D67AD613E94A6D20EBDEEA_label_en-US" xlink:label="lab_us-gaap_ReceivablesPolicyTextBlock_A1E624AAF8D67AD613E94A6D20EBDEEA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Receivable [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReceivablesPolicyTextBlock" xlink:label="loc_us-gaap_ReceivablesPolicyTextBlock_A1E624AAF8D67AD613E94A6D20EBDEEA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReceivablesPolicyTextBlock_A1E624AAF8D67AD613E94A6D20EBDEEA" xlink:to="lab_us-gaap_ReceivablesPolicyTextBlock_A1E624AAF8D67AD613E94A6D20EBDEEA" xlink:type="arc"/>
<link:label id="lab_us-gaap_InventoryPolicyTextBlock_FFF4EFECE81BE985E1D14A6D20EB3E58_verboseLabel_en-US" xlink:label="lab_us-gaap_InventoryPolicyTextBlock_FFF4EFECE81BE985E1D14A6D20EB3E58" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Inventories </link:label>
<link:label id="lab_us-gaap_InventoryPolicyTextBlock_FFF4EFECE81BE985E1D14A6D20EB3E58_label_en-US" xlink:label="lab_us-gaap_InventoryPolicyTextBlock_FFF4EFECE81BE985E1D14A6D20EB3E58" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryPolicyTextBlock" xlink:label="loc_us-gaap_InventoryPolicyTextBlock_FFF4EFECE81BE985E1D14A6D20EB3E58" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryPolicyTextBlock_FFF4EFECE81BE985E1D14A6D20EB3E58" xlink:to="lab_us-gaap_InventoryPolicyTextBlock_FFF4EFECE81BE985E1D14A6D20EB3E58" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_187D6B44B5D1BD581F1D4A6D20EBD3E3_verboseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_187D6B44B5D1BD581F1D4A6D20EBD3E3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Net Plant and Equipment </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_187D6B44B5D1BD581F1D4A6D20EBD3E3_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_187D6B44B5D1BD581F1D4A6D20EBD3E3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_187D6B44B5D1BD581F1D4A6D20EBD3E3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_187D6B44B5D1BD581F1D4A6D20EBD3E3" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_187D6B44B5D1BD581F1D4A6D20EBD3E3" xlink:type="arc"/>
<link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_5065703B9C54ABE90F5F4A6D20EBAF2B_verboseLabel_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_5065703B9C54ABE90F5F4A6D20EBAF2B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Goodwill and Intangible Assets </link:label>
<link:label id="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_5065703B9C54ABE90F5F4A6D20EBAF2B_label_en-US" xlink:label="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_5065703B9C54ABE90F5F4A6D20EBAF2B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill and Intangible Assets, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_5065703B9C54ABE90F5F4A6D20EBAF2B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_5065703B9C54ABE90F5F4A6D20EBAF2B" xlink:to="lab_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_5065703B9C54ABE90F5F4A6D20EBAF2B" xlink:type="arc"/>
<link:label id="lab_itw_AccruedExpensesPolicyTextBlock_CA699E61980B3D7C768F4A6D20EC34A0_verboseLabel_en-US" xlink:label="lab_itw_AccruedExpensesPolicyTextBlock_CA699E61980B3D7C768F4A6D20EC34A0" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Accrued Warranties </link:label>
<link:label id="lab_itw_AccruedExpensesPolicyTextBlock_CA699E61980B3D7C768F4A6D20EC34A0_label_en-US" xlink:label="lab_itw_AccruedExpensesPolicyTextBlock_CA699E61980B3D7C768F4A6D20EC34A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrued Expenses [Policy Text Block] </link:label>
<link:label id="lab_itw_AccruedExpensesPolicyTextBlock_CA699E61980B3D7C768F4A6D20EC34A0_documentation_en-US" xlink:label="lab_itw_AccruedExpensesPolicyTextBlock_CA699E61980B3D7C768F4A6D20EC34A0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Accrued expenses. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_AccruedExpensesPolicyTextBlock" xlink:label="loc_itw_AccruedExpensesPolicyTextBlock_CA699E61980B3D7C768F4A6D20EC34A0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_AccruedExpensesPolicyTextBlock_CA699E61980B3D7C768F4A6D20EC34A0" xlink:to="lab_itw_AccruedExpensesPolicyTextBlock_CA699E61980B3D7C768F4A6D20EC34A0" xlink:type="arc"/>
<link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_8C52B15DD1FA38CCF0714A6D20EC7D56_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_8C52B15DD1FA38CCF0714A6D20EC7D56" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements </link:label>
<link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_8C52B15DD1FA38CCF0714A6D20EC7D56_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_8C52B15DD1FA38CCF0714A6D20EC7D56" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> New Accounting Pronouncements, Policy [Policy Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_8C52B15DD1FA38CCF0714A6D20EC7D56" xlink:type="locator"/>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VestingAxis" xlink:label="loc_us-gaap_VestingAxis_D2F8C0C526DA006EAB801BB0BB8F7A6E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_VestingDomain_5FBB2897A3BD69766A681BB0BB90ACFE_terseLabel_en-US" xlink:label="lab_us-gaap_VestingDomain_5FBB2897A3BD69766A681BB0BB90ACFE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Vesting [Domain] </link:label>
<link:label id="lab_us-gaap_VestingDomain_5FBB2897A3BD69766A681BB0BB90ACFE_label_en-US" xlink:label="lab_us-gaap_VestingDomain_5FBB2897A3BD69766A681BB0BB90ACFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Vesting [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_VestingDomain" xlink:label="loc_us-gaap_VestingDomain_5FBB2897A3BD69766A681BB0BB90ACFE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VestingDomain_5FBB2897A3BD69766A681BB0BB90ACFE" xlink:to="lab_us-gaap_VestingDomain_5FBB2897A3BD69766A681BB0BB90ACFE" xlink:type="arc"/>
<link:label id="lab_itw_PeriodicVestingMember_987BA504C64414F7D6C51BB0BB90E3EE_terseLabel_en-US" xlink:label="lab_itw_PeriodicVestingMember_987BA504C64414F7D6C51BB0BB90E3EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Periodic Vesting </link:label>
<link:label id="lab_itw_PeriodicVestingMember_987BA504C64414F7D6C51BB0BB90E3EE_label_en-US" xlink:label="lab_itw_PeriodicVestingMember_987BA504C64414F7D6C51BB0BB90E3EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Periodic Vesting [Member] </link:label>
<link:label id="lab_itw_PeriodicVestingMember_987BA504C64414F7D6C51BB0BB90E3EE_documentation_en-US" xlink:label="lab_itw_PeriodicVestingMember_987BA504C64414F7D6C51BB0BB90E3EE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Periodic Vesting [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_PeriodicVestingMember" xlink:label="loc_itw_PeriodicVestingMember_987BA504C64414F7D6C51BB0BB90E3EE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_PeriodicVestingMember_987BA504C64414F7D6C51BB0BB90E3EE" xlink:to="lab_itw_PeriodicVestingMember_987BA504C64414F7D6C51BB0BB90E3EE" xlink:type="arc"/>
<link:label id="lab_itw_CliffVestingMember_A37F9515BE82BAE5DC9C1BB0BB90194A_terseLabel_en-US" xlink:label="lab_itw_CliffVestingMember_A37F9515BE82BAE5DC9C1BB0BB90194A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cliff Vesting </link:label>
<link:label id="lab_itw_CliffVestingMember_A37F9515BE82BAE5DC9C1BB0BB90194A_label_en-US" xlink:label="lab_itw_CliffVestingMember_A37F9515BE82BAE5DC9C1BB0BB90194A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cliff Vesting [Member] </link:label>
<link:label id="lab_itw_CliffVestingMember_A37F9515BE82BAE5DC9C1BB0BB90194A_documentation_en-US" xlink:label="lab_itw_CliffVestingMember_A37F9515BE82BAE5DC9C1BB0BB90194A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Cliff Vesting [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_CliffVestingMember" xlink:label="loc_itw_CliffVestingMember_A37F9515BE82BAE5DC9C1BB0BB90194A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_CliffVestingMember_A37F9515BE82BAE5DC9C1BB0BB90194A" xlink:to="lab_itw_CliffVestingMember_A37F9515BE82BAE5DC9C1BB0BB90194A" xlink:type="arc"/>
<link:label id="lab_us-gaap_AwardTypeAxis_94769DB8BE3C3353E7DF1BB0BB9089F7_terseLabel_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_94769DB8BE3C3353E7DF1BB0BB9089F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award Type [Axis] </link:label>
<link:label id="lab_us-gaap_AwardTypeAxis_94769DB8BE3C3353E7DF1BB0BB9089F7_label_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_94769DB8BE3C3353E7DF1BB0BB9089F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Award Type [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_94769DB8BE3C3353E7DF1BB0BB9089F7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AwardTypeAxis_94769DB8BE3C3353E7DF1BB0BB9089F7" xlink:to="lab_us-gaap_AwardTypeAxis_94769DB8BE3C3353E7DF1BB0BB9089F7" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_60F1B2E14CCE48ACC2CA1BB0BB918908_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_60F1B2E14CCE48ACC2CA1BB0BB918908" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Award Type [Domain] </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_60F1B2E14CCE48ACC2CA1BB0BB918908_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_60F1B2E14CCE48ACC2CA1BB0BB918908" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Award Type [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_60F1B2E14CCE48ACC2CA1BB0BB918908" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_60F1B2E14CCE48ACC2CA1BB0BB918908" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_60F1B2E14CCE48ACC2CA1BB0BB918908" xlink:type="arc"/>
<link:label id="lab_us-gaap_EmployeeStockOptionMember_6C267F679D513EE1EF491BB0BB9133D8_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember_6C267F679D513EE1EF491BB0BB9133D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock Options </link:label>
<link:label id="lab_us-gaap_EmployeeStockOptionMember_6C267F679D513EE1EF491BB0BB9133D8_label_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember_6C267F679D513EE1EF491BB0BB9133D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Option [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_6C267F679D513EE1EF491BB0BB9133D8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeStockOptionMember_6C267F679D513EE1EF491BB0BB9133D8" xlink:to="lab_us-gaap_EmployeeStockOptionMember_6C267F679D513EE1EF491BB0BB9133D8" xlink:type="arc"/>
<link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_6EB5E894F5D0915603AD1BB0BB9113CE_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_6EB5E894F5D0915603AD1BB0BB9113CE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Restricted Stock Units (RSUs) </link:label>
<link:label id="lab_us-gaap_RestrictedStockUnitsRSUMember_6EB5E894F5D0915603AD1BB0BB9113CE_label_en-US" xlink:label="lab_us-gaap_RestrictedStockUnitsRSUMember_6EB5E894F5D0915603AD1BB0BB9113CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Restricted Stock Units (RSUs) [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_6EB5E894F5D0915603AD1BB0BB9113CE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedStockUnitsRSUMember_6EB5E894F5D0915603AD1BB0BB9113CE" xlink:to="lab_us-gaap_RestrictedStockUnitsRSUMember_6EB5E894F5D0915603AD1BB0BB9113CE" xlink:type="arc"/>
<link:label id="lab_us-gaap_PerformanceSharesMember_38ACBFD36499C2A22A801BB0BB9113B0_terseLabel_en-US" xlink:label="lab_us-gaap_PerformanceSharesMember_38ACBFD36499C2A22A801BB0BB9113B0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Performance Shares </link:label>
<link:label id="lab_us-gaap_PerformanceSharesMember_38ACBFD36499C2A22A801BB0BB9113B0_label_en-US" xlink:label="lab_us-gaap_PerformanceSharesMember_38ACBFD36499C2A22A801BB0BB9113B0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Performance Shares [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_38ACBFD36499C2A22A801BB0BB9113B0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PerformanceSharesMember_38ACBFD36499C2A22A801BB0BB9113B0" xlink:to="lab_us-gaap_PerformanceSharesMember_38ACBFD36499C2A22A801BB0BB9113B0" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0BAB732A45C5E47D0CB21BB0BB910324_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0BAB732A45C5E47D0CB21BB0BB910324" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award [Line Items] </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0BAB732A45C5E47D0CB21BB0BB910324_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0BAB732A45C5E47D0CB21BB0BB910324" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0BAB732A45C5E47D0CB21BB0BB910324" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0BAB732A45C5E47D0CB21BB0BB910324" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_0BAB732A45C5E47D0CB21BB0BB910324" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_837045D78F209D807B4A1BB0BB92EDD1_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_837045D78F209D807B4A1BB0BB92EDD1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Award vesting period </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_837045D78F209D807B4A1BB0BB92EDD1_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_837045D78F209D807B4A1BB0BB92EDD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_837045D78F209D807B4A1BB0BB92EDD1" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_1350CD7FE8FC7F0D22DE1BB0BB926641_verboseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_1350CD7FE8FC7F0D22DE1BB0BB926641" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Award expiration period </link:label>
<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_1350CD7FE8FC7F0D22DE1BB0BB926641_label_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_1350CD7FE8FC7F0D22DE1BB0BB926641" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_1350CD7FE8FC7F0D22DE1BB0BB926641" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_1350CD7FE8FC7F0D22DE1BB0BB926641" xlink:to="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod_1350CD7FE8FC7F0D22DE1BB0BB926641" xlink:type="arc"/>
<link:label id="lab_itw_NumberOfSharesForEachVestedRsuOrPrsuAward_DB962A2BD4CDB74483E91BB0BB923C6D_verboseLabel_en-US" xlink:label="lab_itw_NumberOfSharesForEachVestedRsuOrPrsuAward_DB962A2BD4CDB74483E91BB0BB923C6D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Number of shares received for each RSU upon vesting (in shares) </link:label>
<link:label id="lab_itw_NumberOfSharesForEachVestedRsuOrPrsuAward_DB962A2BD4CDB74483E91BB0BB923C6D_label_en-US" xlink:label="lab_itw_NumberOfSharesForEachVestedRsuOrPrsuAward_DB962A2BD4CDB74483E91BB0BB923C6D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Number of Shares for Each Vested RSU Or PRSU Award </link:label>
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<link:loc xlink:href="itw-20191231.xsd#itw_NumberOfSharesForEachVestedRsuOrPrsuAward" xlink:label="loc_itw_NumberOfSharesForEachVestedRsuOrPrsuAward_DB962A2BD4CDB74483E91BB0BB923C6D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_AE0610F825C56BFA40901BB0BB921A04_verboseLabel_en-US" xlink:label="lab_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_AE0610F825C56BFA40901BB0BB921A04" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Shares reserved for issuance under long-term incentive plans (in shares) </link:label>
<link:label id="lab_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_AE0610F825C56BFA40901BB0BB921A04_label_en-US" xlink:label="lab_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_AE0610F825C56BFA40901BB0BB921A04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Capital Shares Reserved for Future Issuance </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:label="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_AE0610F825C56BFA40901BB0BB921A04" xlink:type="locator"/>
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<link:label id="lab_us-gaap_RetirementPlanTypeDomain_93819C0353C291AE3BA8002F99AB75F5_terseLabel_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeDomain_93819C0353C291AE3BA8002F99AB75F5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Retirement Plan Type [Domain] </link:label>
<link:label id="lab_us-gaap_RetirementPlanTypeDomain_93819C0353C291AE3BA8002F99AB75F5_label_en-US" xlink:label="lab_us-gaap_RetirementPlanTypeDomain_93819C0353C291AE3BA8002F99AB75F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retirement Plan Type [Domain] </link:label>
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<link:label id="lab_us-gaap_PensionPlansDefinedBenefitMember_D38CA549C32DB3497449002F99ABD0AF_verboseLabel_en-US" xlink:label="lab_us-gaap_PensionPlansDefinedBenefitMember_D38CA549C32DB3497449002F99ABD0AF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Pension </link:label>
<link:label id="lab_us-gaap_PensionPlansDefinedBenefitMember_D38CA549C32DB3497449002F99ABD0AF_label_en-US" xlink:label="lab_us-gaap_PensionPlansDefinedBenefitMember_D38CA549C32DB3497449002F99ABD0AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Pension Plan [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:label="loc_us-gaap_PensionPlansDefinedBenefitMember_D38CA549C32DB3497449002F99ABD0AF" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_27E1F7EA3F6D338658CA002F99AB8EA6_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_27E1F7EA3F6D338658CA002F99AB8EA6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other Postretirement Benefits </link:label>
<link:label id="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_27E1F7EA3F6D338658CA002F99AB8EA6_label_en-US" xlink:label="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_27E1F7EA3F6D338658CA002F99AB8EA6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Postretirement Benefits Plan [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_27E1F7EA3F6D338658CA002F99AB8EA6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_27E1F7EA3F6D338658CA002F99AB8EA6" xlink:to="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_27E1F7EA3F6D338658CA002F99AB8EA6" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_956AA4C58E7320ECDEA3002F99ABA1CB_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_956AA4C58E7320ECDEA3002F99ABA1CB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan Disclosure [Line Items] </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_956AA4C58E7320ECDEA3002F99ABA1CB_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanDisclosureLineItems_956AA4C58E7320ECDEA3002F99ABA1CB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan Disclosure [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:label="loc_us-gaap_DefinedBenefitPlanDisclosureLineItems_956AA4C58E7320ECDEA3002F99ABA1CB" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EF912664718C46808558002F99AC1357_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EF912664718C46808558002F99AC1357" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Change in plan assets: </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EF912664718C46808558002F99AC1357_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EF912664718C46808558002F99AC1357" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward_EF912664718C46808558002F99AC1357" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_D231DDBDCBAF6C68BDAB002F99ACB574_periodStartLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_D231DDBDCBAF6C68BDAB002F99ACB574" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Fair value of plan assets at January 1 </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_D231DDBDCBAF6C68BDAB002F99ACB574_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_D231DDBDCBAF6C68BDAB002F99ACB574" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Plan Assets, Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_D231DDBDCBAF6C68BDAB002F99ACB574" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_D231DDBDCBAF6C68BDAB002F99ACB574" xlink:to="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_D231DDBDCBAF6C68BDAB002F99ACB574" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_ABD7301E17A683C08236002F99ACE40F_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_ABD7301E17A683C08236002F99ACE40F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Actual return on plan assets </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_ABD7301E17A683C08236002F99ACE40F_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_ABD7301E17A683C08236002F99ACE40F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Plan Assets, Increase (Decrease) for Actual Return (Loss) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" xlink:label="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_ABD7301E17A683C08236002F99ACE40F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_ABD7301E17A683C08236002F99ACE40F" xlink:to="lab_us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets_ABD7301E17A683C08236002F99ACE40F" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanContributionsByEmployer_9D4C27044626D6EF03C7002F99AC7440_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanContributionsByEmployer_9D4C27044626D6EF03C7002F99AC7440" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Company contributions </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanContributionsByEmployer_9D4C27044626D6EF03C7002F99AC7440_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanContributionsByEmployer_9D4C27044626D6EF03C7002F99AC7440" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Plan Assets, Contributions by Employer </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:label="loc_us-gaap_DefinedBenefitPlanContributionsByEmployer_9D4C27044626D6EF03C7002F99AC7440" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_B8167C766F4012D1B43D002F99ACD8AB_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_B8167C766F4012D1B43D002F99ACD8AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Plan participants’ contributions </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_B8167C766F4012D1B43D002F99ACD8AB_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_B8167C766F4012D1B43D002F99ACD8AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Plan Assets, Contributions by Plan Participant </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant_B8167C766F4012D1B43D002F99ACD8AB" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_18C0FEA776C11CD58106002F99AD1360_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_18C0FEA776C11CD58106002F99AD1360" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Benefits paid </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_18C0FEA776C11CD58106002F99AD1360_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_18C0FEA776C11CD58106002F99AD1360" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Plan Assets, Benefits Paid </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid_18C0FEA776C11CD58106002F99AD1360" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_2C482B2E2595AC472895002F99ADB40E_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_2C482B2E2595AC472895002F99ADB40E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Foreign currency translation </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_2C482B2E2595AC472895002F99ADB40E_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_2C482B2E2595AC472895002F99ADB40E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Plan Assets, Foreign Currency Translation Gain (Loss) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss_2C482B2E2595AC472895002F99ADB40E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_8B9C7820E3D3F7A22B44002F99AD22BC_periodEndLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_8B9C7820E3D3F7A22B44002F99AD22BC" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Fair value of plan assets at December 31 </link:label>
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<link:label id="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_CEB23E774614B4324250002F99AD6400_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_CEB23E774614B4324250002F99AD6400" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Funded status </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_CEB23E774614B4324250002F99AD6400_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlanAbstract_CEB23E774614B4324250002F99AD6400" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Funded (Unfunded) Status of Plan [Abstract] </link:label>
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<link:label id="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_89EA85E875C37490EA52002F99AD0EA9_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_89EA85E875C37490EA52002F99AD0EA9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Funded status </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_89EA85E875C37490EA52002F99AD0EA9_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFundedStatusOfPlan_89EA85E875C37490EA52002F99AD0EA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Funded (Unfunded) Status of Plan </link:label>
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<link:label id="lab_itw_OtherImmaterialPlans_40536902E2E5430D86E3002F99AEFE68_terseLabel_en-US" xlink:label="lab_itw_OtherImmaterialPlans_40536902E2E5430D86E3002F99AEFE68" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other immaterial plans </link:label>
<link:label id="lab_itw_OtherImmaterialPlans_40536902E2E5430D86E3002F99AEFE68_label_en-US" xlink:label="lab_itw_OtherImmaterialPlans_40536902E2E5430D86E3002F99AEFE68" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Immaterial Plans </link:label>
<link:label id="lab_itw_OtherImmaterialPlans_40536902E2E5430D86E3002F99AEFE68_documentation_en-US" xlink:label="lab_itw_OtherImmaterialPlans_40536902E2E5430D86E3002F99AEFE68" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Other immaterial plans. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_OtherImmaterialPlans" xlink:label="loc_itw_OtherImmaterialPlans_40536902E2E5430D86E3002F99AEFE68" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_OtherImmaterialPlans_40536902E2E5430D86E3002F99AEFE68" xlink:to="lab_itw_OtherImmaterialPlans_40536902E2E5430D86E3002F99AEFE68" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_2707B04B6C839468E28D002F99AE8283_totalLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_2707B04B6C839468E28D002F99AE8283" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net asset (liability) at December 31 </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_2707B04B6C839468E28D002F99AE8283_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_2707B04B6C839468E28D002F99AE8283" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_2707B04B6C839468E28D002F99AE8283" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_2707B04B6C839468E28D002F99AE8283" xlink:to="lab_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_2707B04B6C839468E28D002F99AE8283" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_DCBD88F77A7F6D3ADBFF002F99AE7247_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_DCBD88F77A7F6D3ADBFF002F99AE7247" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> The amounts recognized in the Statement of Financial Position as of December 31 consist of: </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_DCBD88F77A7F6D3ADBFF002F99AE7247_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_DCBD88F77A7F6D3ADBFF002F99AE7247" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_DCBD88F77A7F6D3ADBFF002F99AE7247" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_DCBD88F77A7F6D3ADBFF002F99AE7247" xlink:to="lab_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheetAbstract_DCBD88F77A7F6D3ADBFF002F99AE7247" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_5622A17BFCD6118F9185002F99AE9054_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_5622A17BFCD6118F9185002F99AE9054" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other assets </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_5622A17BFCD6118F9185002F99AE9054_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_5622A17BFCD6118F9185002F99AE9054" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets for Plan Benefits, Defined Benefit Plan </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_5622A17BFCD6118F9185002F99AE9054" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_5622A17BFCD6118F9185002F99AE9054" xlink:to="lab_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_5622A17BFCD6118F9185002F99AE9054" xlink:type="arc"/>
<link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_CED14409EFC64DD72D46002F99AE8340_negatedLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_CED14409EFC64DD72D46002F99AE8340" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Accrued expenses </link:label>
<link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_CED14409EFC64DD72D46002F99AE8340_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_CED14409EFC64DD72D46002F99AE8340" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liability, Defined Benefit Plan, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_CED14409EFC64DD72D46002F99AE8340" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_CED14409EFC64DD72D46002F99AE8340" xlink:to="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_CED14409EFC64DD72D46002F99AE8340" xlink:type="arc"/>
<link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_678E1367EF465D709327002F99AE0855_negatedLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_678E1367EF465D709327002F99AE0855" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Other noncurrent liabilities </link:label>
<link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_678E1367EF465D709327002F99AE0855_label_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_678E1367EF465D709327002F99AE0855" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liability, Defined Benefit Plan, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:label="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_678E1367EF465D709327002F99AE0855" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_678E1367EF465D709327002F99AE0855" xlink:to="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent_678E1367EF465D709327002F99AE0855" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_9871FAA1A08346CE8657002F99AF4C1A_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_9871FAA1A08346CE8657002F99AF4C1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net asset (liability) at end of year </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet" xlink:label="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_9871FAA1A08346CE8657002F99AF4C1A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_9871FAA1A08346CE8657002F99AF4C1A" xlink:to="lab_us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet_9871FAA1A08346CE8657002F99AF4C1A" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_E97E946D38F4CF60C11F002F99AFE94E_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_E97E946D38F4CF60C11F002F99AFE94E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> The pre-tax amounts recognized in accumulated other comprehensive income consist of: </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_E97E946D38F4CF60C11F002F99AFE94E_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_E97E946D38F4CF60C11F002F99AFE94E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_E97E946D38F4CF60C11F002F99AFE94E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_E97E946D38F4CF60C11F002F99AFE94E" xlink:to="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTaxAbstract_E97E946D38F4CF60C11F002F99AFE94E" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_D9D7BEAB9CBEDB37FD7C002F99AF97CF_negatedLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_D9D7BEAB9CBEDB37FD7C002F99AF97CF" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Net actuarial (gain) loss </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_D9D7BEAB9CBEDB37FD7C002F99AF97CF_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_D9D7BEAB9CBEDB37FD7C002F99AF97CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), Gain (Loss), before Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_D9D7BEAB9CBEDB37FD7C002F99AF97CF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_D9D7BEAB9CBEDB37FD7C002F99AF97CF" xlink:to="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax_D9D7BEAB9CBEDB37FD7C002F99AF97CF" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_08548122F05B9D6313CE002F99AF73DD_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_08548122F05B9D6313CE002F99AF73DD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Prior service cost </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_08548122F05B9D6313CE002F99AF73DD_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_08548122F05B9D6313CE002F99AF73DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, Prior Service Cost (Credit), before Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_08548122F05B9D6313CE002F99AF73DD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_08548122F05B9D6313CE002F99AF73DD" xlink:to="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax_08548122F05B9D6313CE002F99AF73DD" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_2A287EA5D3894ED1C7C9002F99AFB6DE_totalLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_2A287EA5D3894ED1C7C9002F99AFB6DE" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Pre-tax net actuarial (gain) loss and prior service cost </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_2A287EA5D3894ED1C7C9002F99AFB6DE_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_2A287EA5D3894ED1C7C9002F99AFB6DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_2A287EA5D3894ED1C7C9002F99AFB6DE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_2A287EA5D3894ED1C7C9002F99AFB6DE" xlink:to="lab_us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax_2A287EA5D3894ED1C7C9002F99AFB6DE" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_4F253E56E82A3829D6F1002F99AF1555_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_4F253E56E82A3829D6F1002F99AF1555" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated benefit obligation </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_4F253E56E82A3829D6F1002F99AF1555_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_4F253E56E82A3829D6F1002F99AF1555" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Accumulated Benefit Obligation </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_4F253E56E82A3829D6F1002F99AF1555" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_4F253E56E82A3829D6F1002F99AF1555" xlink:to="lab_us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation_4F253E56E82A3829D6F1002F99AF1555" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_9AAFD665C9DDF4255E67002F99B04005_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_9AAFD665C9DDF4255E67002F99B04005" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Plans with accumulated benefit obligation in excess of plan assets as of December 31: </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_9AAFD665C9DDF4255E67002F99B04005_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_9AAFD665C9DDF4255E67002F99B04005" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract" xlink:label="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_9AAFD665C9DDF4255E67002F99B04005" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_9AAFD665C9DDF4255E67002F99B04005" xlink:to="lab_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAbstract_9AAFD665C9DDF4255E67002F99B04005" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_C237B47EB5EDDD1B7D23002F99B0D8A2_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation_C237B47EB5EDDD1B7D23002F99B0D8A2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Projected benefit obligation </link:label>
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<link:label id="lab_us-gaap_DisposalGroupClassificationDomain_2A2B003F260D0D1DF3441BB0BD500C30_terseLabel_en-US" xlink:label="lab_us-gaap_DisposalGroupClassificationDomain_2A2B003F260D0D1DF3441BB0BD500C30" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Disposal Group Classification [Domain] </link:label>
<link:label id="lab_us-gaap_DisposalGroupClassificationDomain_2A2B003F260D0D1DF3441BB0BD500C30_label_en-US" xlink:label="lab_us-gaap_DisposalGroupClassificationDomain_2A2B003F260D0D1DF3441BB0BD500C30" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Disposal Group Classification [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupClassificationDomain" xlink:label="loc_us-gaap_DisposalGroupClassificationDomain_2A2B003F260D0D1DF3441BB0BD500C30" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_2B0610D222B14CFFF6E61BB0BD508BF5_terseLabel_en-US" xlink:label="lab_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_2B0610D222B14CFFF6E61BB0BD508BF5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Disposal Group, Held-for-Sale </link:label>
<link:label id="lab_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_2B0610D222B14CFFF6E61BB0BD508BF5_label_en-US" xlink:label="lab_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_2B0610D222B14CFFF6E61BB0BD508BF5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Disposal Group, Held-for-sale, Not Discontinued Operations [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember" xlink:label="loc_us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_2B0610D222B14CFFF6E61BB0BD508BF5" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_77DA28505B63A92D4CCD1BB8F497955A_terseLabel_en-US" xlink:label="lab_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_77DA28505B63A92D4CCD1BB8F497955A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Disposal Group, Disposed of by Sale </link:label>
<link:label id="lab_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_77DA28505B63A92D4CCD1BB8F497955A_label_en-US" xlink:label="lab_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_77DA28505B63A92D4CCD1BB8F497955A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember" xlink:label="loc_us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_77DA28505B63A92D4CCD1BB8F497955A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_612944A90FBC1C72C3591BB0BD513A76_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_612944A90FBC1C72C3591BB0BD513A76" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] </link:label>
<link:label id="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_612944A90FBC1C72C3591BB0BD513A76_label_en-US" xlink:label="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_612944A90FBC1C72C3591BB0BD513A76" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems" xlink:label="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_612944A90FBC1C72C3591BB0BD513A76" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_612944A90FBC1C72C3591BB0BD513A76" xlink:to="lab_us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_612944A90FBC1C72C3591BB0BD513A76" xlink:type="arc"/>
<link:label id="lab_itw_DisposalGroupIncludingDiscontinuedOperationRevenuePotentialDivestitures_562F1B9E6BFCEDFEAA881BB7CFC688A0_terseLabel_en-US" xlink:label="lab_itw_DisposalGroupIncludingDiscontinuedOperationRevenuePotentialDivestitures_562F1B9E6BFCEDFEAA881BB7CFC688A0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Divestiture of businesses, annual revenues (up to) </link:label>
<link:label id="lab_itw_DisposalGroupIncludingDiscontinuedOperationRevenuePotentialDivestitures_562F1B9E6BFCEDFEAA881BB7CFC688A0_label_en-US" xlink:label="lab_itw_DisposalGroupIncludingDiscontinuedOperationRevenuePotentialDivestitures_562F1B9E6BFCEDFEAA881BB7CFC688A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Disposal Group, Including Discontinued Operation, Revenue, Potential Divestitures </link:label>
<link:label id="lab_itw_DisposalGroupIncludingDiscontinuedOperationRevenuePotentialDivestitures_562F1B9E6BFCEDFEAA881BB7CFC688A0_documentation_en-US" xlink:label="lab_itw_DisposalGroupIncludingDiscontinuedOperationRevenuePotentialDivestitures_562F1B9E6BFCEDFEAA881BB7CFC688A0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Disposal Group, Including Discontinued Operation, Revenue, Potential Divestitures </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_DisposalGroupIncludingDiscontinuedOperationRevenuePotentialDivestitures" xlink:label="loc_itw_DisposalGroupIncludingDiscontinuedOperationRevenuePotentialDivestitures_562F1B9E6BFCEDFEAA881BB7CFC688A0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_DisposalGroupIncludingDiscontinuedOperationRevenuePotentialDivestitures_562F1B9E6BFCEDFEAA881BB7CFC688A0" xlink:to="lab_itw_DisposalGroupIncludingDiscontinuedOperationRevenuePotentialDivestitures_562F1B9E6BFCEDFEAA881BB7CFC688A0" xlink:type="arc"/>
<link:label id="lab_itw_DisposalGroupIncludingDiscontinuedOperationsNumberofBusinessesDivested_FBD986023BEF4EE281771BB0BD51C667_terseLabel_en-US" xlink:label="lab_itw_DisposalGroupIncludingDiscontinuedOperationsNumberofBusinessesDivested_FBD986023BEF4EE281771BB0BD51C667" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of businesses divested </link:label>
<link:label id="lab_itw_DisposalGroupIncludingDiscontinuedOperationsNumberofBusinessesDivested_FBD986023BEF4EE281771BB0BD51C667_label_en-US" xlink:label="lab_itw_DisposalGroupIncludingDiscontinuedOperationsNumberofBusinessesDivested_FBD986023BEF4EE281771BB0BD51C667" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Disposal Group, Including Discontinued Operations, Number of Businesses Divested </link:label>
<link:label id="lab_itw_DisposalGroupIncludingDiscontinuedOperationsNumberofBusinessesDivested_FBD986023BEF4EE281771BB0BD51C667_documentation_en-US" xlink:label="lab_itw_DisposalGroupIncludingDiscontinuedOperationsNumberofBusinessesDivested_FBD986023BEF4EE281771BB0BD51C667" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Disposal Group, Including Discontinued Operations, Number of Businesses Divested </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_DisposalGroupIncludingDiscontinuedOperationsNumberofBusinessesDivested" xlink:label="loc_itw_DisposalGroupIncludingDiscontinuedOperationsNumberofBusinessesDivested_FBD986023BEF4EE281771BB0BD51C667" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_D0D4A279355973D172101BB0BD52B74E_verboseLabel_en-US" xlink:label="lab_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_D0D4A279355973D172101BB0BD52B74E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Pre-tax gains on disposal of businesses </link:label>
<link:label id="lab_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_D0D4A279355973D172101BB0BD52B74E_label_en-US" xlink:label="lab_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_D0D4A279355973D172101BB0BD52B74E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_D0D4A279355973D172101BB0BD52B74E" xlink:type="locator"/>
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<link:label id="lab_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax_74E0F6AEC0C79B8BB77E1BB0BD52D524_terseLabel_en-US" xlink:label="lab_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax_74E0F6AEC0C79B8BB77E1BB0BD52D524" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> After-tax gains on disposal of businesses </link:label>
<link:label id="lab_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax_74E0F6AEC0C79B8BB77E1BB0BD52D524_label_en-US" xlink:label="lab_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax_74E0F6AEC0C79B8BB77E1BB0BD52D524" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Disposal Group Not Discontinued Operation, Gain (Loss) On Disposal Net Of Tax </link:label>
<link:label id="lab_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax_74E0F6AEC0C79B8BB77E1BB0BD52D524_documentation_en-US" xlink:label="lab_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax_74E0F6AEC0C79B8BB77E1BB0BD52D524" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Disposal Group Not Discontinued Operation, Gain (Loss) On Disposal Net Of Tax </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax" xlink:label="loc_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax_74E0F6AEC0C79B8BB77E1BB0BD52D524" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax_74E0F6AEC0C79B8BB77E1BB0BD52D524" xlink:to="lab_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTax_74E0F6AEC0C79B8BB77E1BB0BD52D524" xlink:type="arc"/>
<link:label id="lab_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTaxPerDilutedShare_7825E66AA652C2E154711BC93B4AB1B1_terseLabel_en-US" xlink:label="lab_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTaxPerDilutedShare_7825E66AA652C2E154711BC93B4AB1B1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> After-tax gains on disposal of businesses, per diluted share (in dollars per share) </link:label>
<link:label id="lab_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTaxPerDilutedShare_7825E66AA652C2E154711BC93B4AB1B1_label_en-US" xlink:label="lab_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTaxPerDilutedShare_7825E66AA652C2E154711BC93B4AB1B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Disposal Group, Not Discontinued Operation, Gain (Loss) On Disposal, Net Of Tax, Per Diluted Share </link:label>
<link:label id="lab_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTaxPerDilutedShare_7825E66AA652C2E154711BC93B4AB1B1_documentation_en-US" xlink:label="lab_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTaxPerDilutedShare_7825E66AA652C2E154711BC93B4AB1B1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Disposal Group, Not Discontinued Operation, Gain (Loss) On Disposal, Net Of Tax, Per Diluted Share </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTaxPerDilutedShare" xlink:label="loc_itw_DisposalGroupNotDiscontinuedOperationGainLossOnDisposalNetOfTaxPerDilutedShare_7825E66AA652C2E154711BC93B4AB1B1" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_3CAC8FB304E95582869E1BB0BD5122AD_terseLabel_en-US" xlink:label="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_3CAC8FB304E95582869E1BB0BD5122AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating revenue </link:label>
<link:label id="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_3CAC8FB304E95582869E1BB0BD5122AD_label_en-US" xlink:label="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_3CAC8FB304E95582869E1BB0BD5122AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Disposal Group, Including Discontinued Operation, Revenue </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue" xlink:label="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_3CAC8FB304E95582869E1BB0BD5122AD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_3CAC8FB304E95582869E1BB0BD5122AD" xlink:to="lab_us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue_3CAC8FB304E95582869E1BB0BD5122AD" xlink:type="arc"/>
<link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract_5C6989CF09FC98A9E231FCA829568162_verboseLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract_5C6989CF09FC98A9E231FCA829568162" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Intangible Assets: </link:label>
<link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract_5C6989CF09FC98A9E231FCA829568162_label_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract_5C6989CF09FC98A9E231FCA829568162" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intangible Assets, Net (Excluding Goodwill) [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract_5C6989CF09FC98A9E231FCA829568162" xlink:type="locator"/>
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<link:label id="lab_itw_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_896FB4D0EFD37513CC42FCA829560684_terseLabel_en-US" xlink:label="lab_itw_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_896FB4D0EFD37513CC42FCA829560684" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Finite-Lived and Indefinite-Lived Intangible Assets by Major Class [Table] </link:label>
<link:label id="lab_itw_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_896FB4D0EFD37513CC42FCA829560684_label_en-US" xlink:label="lab_itw_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_896FB4D0EFD37513CC42FCA829560684" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table] </link:label>
<link:label id="lab_itw_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_896FB4D0EFD37513CC42FCA829560684_documentation_en-US" xlink:label="lab_itw_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_896FB4D0EFD37513CC42FCA829560684" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable" xlink:label="loc_itw_ScheduleOfFiniteLivedAndIndefiniteLivedIntangibleAssetsTable_896FB4D0EFD37513CC42FCA829560684" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_C6419AA9D7720CB08D21FCA8295636E6_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_C6419AA9D7720CB08D21FCA8295636E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets by Major Class [Axis] </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_C6419AA9D7720CB08D21FCA8295636E6_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_C6419AA9D7720CB08D21FCA8295636E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets by Major Class [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_C6419AA9D7720CB08D21FCA8295636E6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_C6419AA9D7720CB08D21FCA8295636E6" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_C6419AA9D7720CB08D21FCA8295636E6" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_B0422A3F84A7FB209029FCA829579F83_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_B0422A3F84A7FB209029FCA829579F83" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Major Class Name [Domain] </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_B0422A3F84A7FB209029FCA829579F83_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_B0422A3F84A7FB209029FCA829579F83" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Major Class Name [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_B0422A3F84A7FB209029FCA829579F83" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_B0422A3F84A7FB209029FCA829579F83" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_B0422A3F84A7FB209029FCA829579F83" xlink:type="arc"/>
<link:label id="lab_itw_CustomerListsAndRelationshipsMember_B01DEAAA6EEC760D43DCFCA82957FE3B_verboseLabel_en-US" xlink:label="lab_itw_CustomerListsAndRelationshipsMember_B01DEAAA6EEC760D43DCFCA82957FE3B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Customer lists and relationships </link:label>
<link:label id="lab_itw_CustomerListsAndRelationshipsMember_B01DEAAA6EEC760D43DCFCA82957FE3B_label_en-US" xlink:label="lab_itw_CustomerListsAndRelationshipsMember_B01DEAAA6EEC760D43DCFCA82957FE3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Customer Lists and Relationships [Member] </link:label>
<link:label id="lab_itw_CustomerListsAndRelationshipsMember_B01DEAAA6EEC760D43DCFCA82957FE3B_documentation_en-US" xlink:label="lab_itw_CustomerListsAndRelationshipsMember_B01DEAAA6EEC760D43DCFCA82957FE3B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Customer lists and relationships. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_CustomerListsAndRelationshipsMember" xlink:label="loc_itw_CustomerListsAndRelationshipsMember_B01DEAAA6EEC760D43DCFCA82957FE3B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_CustomerListsAndRelationshipsMember_B01DEAAA6EEC760D43DCFCA82957FE3B" xlink:to="lab_itw_CustomerListsAndRelationshipsMember_B01DEAAA6EEC760D43DCFCA82957FE3B" xlink:type="arc"/>
<link:label id="lab_us-gaap_TrademarksMember_9CADEBB0432BA7076027FCA82957761E_verboseLabel_en-US" xlink:label="lab_us-gaap_TrademarksMember_9CADEBB0432BA7076027FCA82957761E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Trademarks and brands </link:label>
<link:label id="lab_us-gaap_TrademarksMember_9CADEBB0432BA7076027FCA82957761E_label_en-US" xlink:label="lab_us-gaap_TrademarksMember_9CADEBB0432BA7076027FCA82957761E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Trademarks [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TrademarksMember" xlink:label="loc_us-gaap_TrademarksMember_9CADEBB0432BA7076027FCA82957761E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TrademarksMember_9CADEBB0432BA7076027FCA82957761E" xlink:to="lab_us-gaap_TrademarksMember_9CADEBB0432BA7076027FCA82957761E" xlink:type="arc"/>
<link:label id="lab_us-gaap_PatentedTechnologyMember_12469E695FD312D9ECEEFCA8295715FE_verboseLabel_en-US" xlink:label="lab_us-gaap_PatentedTechnologyMember_12469E695FD312D9ECEEFCA8295715FE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Patents and proprietary technology </link:label>
<link:label id="lab_us-gaap_PatentedTechnologyMember_12469E695FD312D9ECEEFCA8295715FE_label_en-US" xlink:label="lab_us-gaap_PatentedTechnologyMember_12469E695FD312D9ECEEFCA8295715FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Patented Technology [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PatentedTechnologyMember" xlink:label="loc_us-gaap_PatentedTechnologyMember_12469E695FD312D9ECEEFCA8295715FE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PatentedTechnologyMember_12469E695FD312D9ECEEFCA8295715FE" xlink:to="lab_us-gaap_PatentedTechnologyMember_12469E695FD312D9ECEEFCA8295715FE" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherIntangibleAssetsMember_A66E755522C2500AE457FCA82958C907_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherIntangibleAssetsMember_A66E755522C2500AE457FCA82958C907" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other </link:label>
<link:label id="lab_us-gaap_OtherIntangibleAssetsMember_A66E755522C2500AE457FCA82958C907_label_en-US" xlink:label="lab_us-gaap_OtherIntangibleAssetsMember_A66E755522C2500AE457FCA82958C907" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Intangible Assets [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherIntangibleAssetsMember" xlink:label="loc_us-gaap_OtherIntangibleAssetsMember_A66E755522C2500AE457FCA82958C907" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherIntangibleAssetsMember_A66E755522C2500AE457FCA82958C907" xlink:to="lab_us-gaap_OtherIntangibleAssetsMember_A66E755522C2500AE457FCA82958C907" xlink:type="arc"/>
<link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E1F74078AFDD6924EBBDFCA82958524E_terseLabel_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E1F74078AFDD6924EBBDFCA82958524E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Indefinite-lived Intangible Assets by Major Class [Axis] </link:label>
<link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E1F74078AFDD6924EBBDFCA82958524E_label_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E1F74078AFDD6924EBBDFCA82958524E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Indefinite-lived Intangible Assets [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E1F74078AFDD6924EBBDFCA82958524E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E1F74078AFDD6924EBBDFCA82958524E" xlink:to="lab_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_E1F74078AFDD6924EBBDFCA82958524E" xlink:type="arc"/>
<link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_404590D28510FF73B235FCA829584E03_terseLabel_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_404590D28510FF73B235FCA829584E03" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Indefinite-lived Intangible Assets, Major Class Name [Domain] </link:label>
<link:label id="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_404590D28510FF73B235FCA829584E03_label_en-US" xlink:label="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_404590D28510FF73B235FCA829584E03" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Indefinite-lived Intangible Assets, Major Class Name [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_404590D28510FF73B235FCA829584E03" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_404590D28510FF73B235FCA829584E03" xlink:to="lab_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_404590D28510FF73B235FCA829584E03" xlink:type="arc"/>
<link:label id="lab_us-gaap_TrademarksMember_7872EF9E2354BF517753FCA82958EF64_terseLabel_en-US" xlink:label="lab_us-gaap_TrademarksMember_7872EF9E2354BF517753FCA82958EF64" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Trademarks and brands </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TrademarksMember" xlink:label="loc_us-gaap_TrademarksMember_7872EF9E2354BF517753FCA82958EF64" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TrademarksMember_7872EF9E2354BF517753FCA82958EF64" xlink:to="lab_us-gaap_TrademarksMember_7872EF9E2354BF517753FCA82958EF64" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_A47E33B4515043588EF0FCA82958A5A6_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_A47E33B4515043588EF0FCA82958A5A6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived and Indefinite-Lived Intangible Assets [Line Items] </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_A47E33B4515043588EF0FCA82958A5A6_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_A47E33B4515043588EF0FCA82958A5A6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_A47E33B4515043588EF0FCA82958A5A6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_A47E33B4515043588EF0FCA82958A5A6" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_A47E33B4515043588EF0FCA82958A5A6" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_4A41797E5ECC53357AF7FCA82959ACFF_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_4A41797E5ECC53357AF7FCA82959ACFF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Amortizable intangible assets: </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_4A41797E5ECC53357AF7FCA82959ACFF_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_4A41797E5ECC53357AF7FCA82959ACFF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Net [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNetAbstract" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_4A41797E5ECC53357AF7FCA82959ACFF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_4A41797E5ECC53357AF7FCA82959ACFF" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_4A41797E5ECC53357AF7FCA82959ACFF" xlink:type="arc"/>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_C7AC3DACE89899B5C550FCA82959A968_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_C7AC3DACE89899B5C550FCA82959A968" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cost </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_C7AC3DACE89899B5C550FCA82959A968_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_C7AC3DACE89899B5C550FCA82959A968" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_C7AC3DACE89899B5C550FCA82959A968" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_E5F9C5840457A30F2F31FCA829591901_negatedLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_E5F9C5840457A30F2F31FCA829591901" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Amortization </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_E5F9C5840457A30F2F31FCA829591901_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_E5F9C5840457A30F2F31FCA829591901" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Accumulated Amortization </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_E5F9C5840457A30F2F31FCA829591901" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_F632F72EBB12B36EB805FCA829599EEB_totalLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_F632F72EBB12B36EB805FCA829599EEB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net </link:label>
<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_F632F72EBB12B36EB805FCA829599EEB_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_F632F72EBB12B36EB805FCA829599EEB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_F632F72EBB12B36EB805FCA829599EEB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_F632F72EBB12B36EB805FCA829599EEB" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNet_F632F72EBB12B36EB805FCA829599EEB" xlink:type="arc"/>
<link:label id="lab_us-gaap_IntangibleAssetsGrossExcludingGoodwill_AFE02975DF341D53F1EAFCA8295923CE_totalLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsGrossExcludingGoodwill_AFE02975DF341D53F1EAFCA8295923CE" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total intangible assets, Cost </link:label>
<link:label id="lab_us-gaap_IntangibleAssetsGrossExcludingGoodwill_AFE02975DF341D53F1EAFCA8295923CE_label_en-US" xlink:label="lab_us-gaap_IntangibleAssetsGrossExcludingGoodwill_AFE02975DF341D53F1EAFCA8295923CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intangible Assets, Gross (Excluding Goodwill) </link:label>
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<link:label id="lab_itw_DeferredTaxLiabilityTaxDeferredExpenseCompensationandBenefitsPensions_883610BE01CFD17F424B310FF3C25391_label_en-US" xlink:label="lab_itw_DeferredTaxLiabilityTaxDeferredExpenseCompensationandBenefitsPensions_883610BE01CFD17F424B310FF3C25391" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Tax Liability, Tax Deferred Expense, Compensation and Benefits, Pensions </link:label>
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<link:loc xlink:href="itw-20191231.xsd#itw_DeferredTaxLiabilityTaxDeferredExpenseCompensationandBenefitsPensions" xlink:label="loc_itw_DeferredTaxLiabilityTaxDeferredExpenseCompensationandBenefitsPensions_883610BE01CFD17F424B310FF3C25391" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains_0A44397A895B9C70359F310FF3C25266_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains_0A44397A895B9C70359F310FF3C25266" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Unrealized loss (gain) on foreign debt instruments </link:label>
<link:label id="lab_us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains_0A44397A895B9C70359F310FF3C25266_label_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains_0A44397A895B9C70359F310FF3C25266" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Tax Liabilities, Unrealized Currency Transaction Gains </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesUnrealizedCurrencyTransactionGains_0A44397A895B9C70359F310FF3C25266" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DeferredTaxLiabilitiesLeasingArrangements_0D38E50C2ACF8F61E0303144ADB18CA7_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesLeasingArrangements_0D38E50C2ACF8F61E0303144ADB18CA7" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Operating leases </link:label>
<link:label id="lab_us-gaap_DeferredTaxLiabilitiesLeasingArrangements_0D38E50C2ACF8F61E0303144ADB18CA7_label_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesLeasingArrangements_0D38E50C2ACF8F61E0303144ADB18CA7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Tax Liabilities, Leasing Arrangements </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilitiesLeasingArrangements" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesLeasingArrangements_0D38E50C2ACF8F61E0303144ADB18CA7" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DeferredTaxLiabilitiesOther_293EF874A3E6E449C65B310FF3C243F2_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesOther_293EF874A3E6E449C65B310FF3C243F2" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Other </link:label>
<link:label id="lab_us-gaap_DeferredTaxLiabilitiesOther_293EF874A3E6E449C65B310FF3C243F2_label_en-US" xlink:label="lab_us-gaap_DeferredTaxLiabilitiesOther_293EF874A3E6E449C65B310FF3C243F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Tax Liabilities, Other </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredTaxLiabilitiesOther" xlink:label="loc_us-gaap_DeferredTaxLiabilitiesOther_293EF874A3E6E449C65B310FF3C243F2" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DeferredIncomeTaxLiabilities_322FDE940F0A97AD092E310FF3C24FD1_negatedTotalLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxLiabilities_322FDE940F0A97AD092E310FF3C24FD1" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US"> Gross deferred income tax liabilities </link:label>
<link:label id="lab_us-gaap_DeferredIncomeTaxLiabilities_322FDE940F0A97AD092E310FF3C24FD1_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxLiabilities_322FDE940F0A97AD092E310FF3C24FD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Tax Liabilities, Gross </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilities" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilities_322FDE940F0A97AD092E310FF3C24FD1" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DebtInstrumentTable_A313FA0A57352CA9C10F39BF39EE195B_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_A313FA0A57352CA9C10F39BF39EE195B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Long-term Debt Instruments [Table] </link:label>
<link:label id="lab_us-gaap_DebtInstrumentTable_A313FA0A57352CA9C10F39BF39EE195B_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_A313FA0A57352CA9C10F39BF39EE195B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Long-term Debt Instruments [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_A313FA0A57352CA9C10F39BF39EE195B" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DebtInstrumentAxis_5E662F93E733A7EF3D3039BF39EF2276_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_5E662F93E733A7EF3D3039BF39EF2276" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Axis] </link:label>
<link:label id="lab_us-gaap_DebtInstrumentAxis_5E662F93E733A7EF3D3039BF39EF2276_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_5E662F93E733A7EF3D3039BF39EF2276" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_5E662F93E733A7EF3D3039BF39EF2276" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DebtInstrumentNameDomain_13D4F737456180FB454639BF39EFF246_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_13D4F737456180FB454639BF39EFF246" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Name [Domain] </link:label>
<link:label id="lab_us-gaap_DebtInstrumentNameDomain_13D4F737456180FB454639BF39EFF246_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_13D4F737456180FB454639BF39EFF246" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Name [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_13D4F737456180FB454639BF39EFF246" xlink:type="locator"/>
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<link:label id="lab_itw_A1.95NotesDueMarch12019Member_BCB8CA37FFEB626D18FE39BF39EFE83D_terseLabel_en-US" xlink:label="lab_itw_A1.95NotesDueMarch12019Member_BCB8CA37FFEB626D18FE39BF39EFE83D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 1.95% notes due March 1, 2019 </link:label>
<link:label id="lab_itw_A1.95NotesDueMarch12019Member_BCB8CA37FFEB626D18FE39BF39EFE83D_label_en-US" xlink:label="lab_itw_A1.95NotesDueMarch12019Member_BCB8CA37FFEB626D18FE39BF39EFE83D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 1.95% Notes Due March 1, 2019 [Member] </link:label>
<link:label id="lab_itw_A1.95NotesDueMarch12019Member_BCB8CA37FFEB626D18FE39BF39EFE83D_documentation_en-US" xlink:label="lab_itw_A1.95NotesDueMarch12019Member_BCB8CA37FFEB626D18FE39BF39EFE83D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 1.95% Notes Due March 1, 2019 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A1.95NotesDueMarch12019Member" xlink:label="loc_itw_A1.95NotesDueMarch12019Member_BCB8CA37FFEB626D18FE39BF39EFE83D" xlink:type="locator"/>
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<link:label id="lab_itw_A6.25NotesDueApril12019Member_5D1BE5BEC7B4D9EA3A6639BF39EFDA81_label_en-US" xlink:label="lab_itw_A6.25NotesDueApril12019Member_5D1BE5BEC7B4D9EA3A6639BF39EFDA81" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 6.25% Notes Due April 1, 2019 [Member] </link:label>
<link:label id="lab_itw_A6.25NotesDueApril12019Member_5D1BE5BEC7B4D9EA3A6639BF39EFDA81_documentation_en-US" xlink:label="lab_itw_A6.25NotesDueApril12019Member_5D1BE5BEC7B4D9EA3A6639BF39EFDA81" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 6.25% Notes Due April 1, 2019 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A6.25NotesDueApril12019Member" xlink:label="loc_itw_A6.25NotesDueApril12019Member_5D1BE5BEC7B4D9EA3A6639BF39EFDA81" xlink:type="locator"/>
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<link:label id="lab_itw_A4.88NotesDueThroughDecember312020Member_435139A8EBD4B3413F4339BF39F04303_label_en-US" xlink:label="lab_itw_A4.88NotesDueThroughDecember312020Member_435139A8EBD4B3413F4339BF39F04303" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 4.88% Notes Due Through December 31, 2020 [Member] </link:label>
<link:label id="lab_itw_A4.88NotesDueThroughDecember312020Member_435139A8EBD4B3413F4339BF39F04303_documentation_en-US" xlink:label="lab_itw_A4.88NotesDueThroughDecember312020Member_435139A8EBD4B3413F4339BF39F04303" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 4.88% Notes Due Through December 31, 2020 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A4.88NotesDueThroughDecember312020Member" xlink:label="loc_itw_A4.88NotesDueThroughDecember312020Member_435139A8EBD4B3413F4339BF39F04303" xlink:type="locator"/>
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<link:label id="lab_itw_A3.375NotesDueSeptember152021Member_590CC04B5426BBBFC17739BF39F06D88_label_en-US" xlink:label="lab_itw_A3.375NotesDueSeptember152021Member_590CC04B5426BBBFC17739BF39F06D88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 3.375% Notes Due September 15, 2021 [Member] </link:label>
<link:label id="lab_itw_A3.375NotesDueSeptember152021Member_590CC04B5426BBBFC17739BF39F06D88_documentation_en-US" xlink:label="lab_itw_A3.375NotesDueSeptember152021Member_590CC04B5426BBBFC17739BF39F06D88" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 3.375% notes due September 15, 2021 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A3.375NotesDueSeptember152021Member" xlink:label="loc_itw_A3.375NotesDueSeptember152021Member_590CC04B5426BBBFC17739BF39F06D88" xlink:type="locator"/>
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<link:label id="lab_itw_A1.75EuroNotesDueMay202022Member_0CDAE43FB47FC93EE75239BF39F0F456_terseLabel_en-US" xlink:label="lab_itw_A1.75EuroNotesDueMay202022Member_0CDAE43FB47FC93EE75239BF39F0F456" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 1.75% Euro notes due May 20, 2022 </link:label>
<link:label id="lab_itw_A1.75EuroNotesDueMay202022Member_0CDAE43FB47FC93EE75239BF39F0F456_label_en-US" xlink:label="lab_itw_A1.75EuroNotesDueMay202022Member_0CDAE43FB47FC93EE75239BF39F0F456" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 1.75% Euro Notes Due May 20, 2022 [Member] </link:label>
<link:label id="lab_itw_A1.75EuroNotesDueMay202022Member_0CDAE43FB47FC93EE75239BF39F0F456_documentation_en-US" xlink:label="lab_itw_A1.75EuroNotesDueMay202022Member_0CDAE43FB47FC93EE75239BF39F0F456" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 1.75% Euro Notes Due May 20, 2022 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A1.75EuroNotesDueMay202022Member" xlink:label="loc_itw_A1.75EuroNotesDueMay202022Member_0CDAE43FB47FC93EE75239BF39F0F456" xlink:type="locator"/>
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<link:label id="lab_itw_A1.25EuroNotesDueMay222023Member_B7F127C5276E2604ACDD39BF39F1A19A_terseLabel_en-US" xlink:label="lab_itw_A1.25EuroNotesDueMay222023Member_B7F127C5276E2604ACDD39BF39F1A19A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 1.25% Euro notes due May 22, 2023 </link:label>
<link:label id="lab_itw_A1.25EuroNotesDueMay222023Member_B7F127C5276E2604ACDD39BF39F1A19A_label_en-US" xlink:label="lab_itw_A1.25EuroNotesDueMay222023Member_B7F127C5276E2604ACDD39BF39F1A19A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 1.25% Euro Notes Due May 22, 2023 [Member] </link:label>
<link:label id="lab_itw_A1.25EuroNotesDueMay222023Member_B7F127C5276E2604ACDD39BF39F1A19A_documentation_en-US" xlink:label="lab_itw_A1.25EuroNotesDueMay222023Member_B7F127C5276E2604ACDD39BF39F1A19A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 1.25% Euro Notes Due May 22, 2023 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A1.25EuroNotesDueMay222023Member" xlink:label="loc_itw_A1.25EuroNotesDueMay222023Member_B7F127C5276E2604ACDD39BF39F1A19A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A1.25EuroNotesDueMay222023Member_B7F127C5276E2604ACDD39BF39F1A19A" xlink:to="lab_itw_A1.25EuroNotesDueMay222023Member_B7F127C5276E2604ACDD39BF39F1A19A" xlink:type="arc"/>
<link:label id="lab_itw_A3.50NotesDueMarch12024Member_776A3C3754EF3BC7F99439BF39F1B762_terseLabel_en-US" xlink:label="lab_itw_A3.50NotesDueMarch12024Member_776A3C3754EF3BC7F99439BF39F1B762" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 3.50% notes due March 1, 2024 </link:label>
<link:label id="lab_itw_A3.50NotesDueMarch12024Member_776A3C3754EF3BC7F99439BF39F1B762_label_en-US" xlink:label="lab_itw_A3.50NotesDueMarch12024Member_776A3C3754EF3BC7F99439BF39F1B762" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 3.50% Notes Due March 1, 2024 [Member] </link:label>
<link:label id="lab_itw_A3.50NotesDueMarch12024Member_776A3C3754EF3BC7F99439BF39F1B762_documentation_en-US" xlink:label="lab_itw_A3.50NotesDueMarch12024Member_776A3C3754EF3BC7F99439BF39F1B762" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 3.50% Notes Due March 1, 2024 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A3.50NotesDueMarch12024Member" xlink:label="loc_itw_A3.50NotesDueMarch12024Member_776A3C3754EF3BC7F99439BF39F1B762" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A3.50NotesDueMarch12024Member_776A3C3754EF3BC7F99439BF39F1B762" xlink:to="lab_itw_A3.50NotesDueMarch12024Member_776A3C3754EF3BC7F99439BF39F1B762" xlink:type="arc"/>
<link:label id="lab_itw_A0.25EuroNotesDueDecember52024Member_7C61B95B979012E070DF39BF39F1DFC8_verboseLabel_en-US" xlink:label="lab_itw_A0.25EuroNotesDueDecember52024Member_7C61B95B979012E070DF39BF39F1DFC8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 0.25% Euro notes due December 5, 2024 </link:label>
<link:label id="lab_itw_A0.25EuroNotesDueDecember52024Member_7C61B95B979012E070DF39BF39F1DFC8_label_en-US" xlink:label="lab_itw_A0.25EuroNotesDueDecember52024Member_7C61B95B979012E070DF39BF39F1DFC8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 0.25% Euro Notes Due December 5, 2024 [Member] </link:label>
<link:label id="lab_itw_A0.25EuroNotesDueDecember52024Member_7C61B95B979012E070DF39BF39F1DFC8_documentation_en-US" xlink:label="lab_itw_A0.25EuroNotesDueDecember52024Member_7C61B95B979012E070DF39BF39F1DFC8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 0.25% Euro Notes Due December 5, 2024 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A0.25EuroNotesDueDecember52024Member" xlink:label="loc_itw_A0.25EuroNotesDueDecember52024Member_7C61B95B979012E070DF39BF39F1DFC8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A0.25EuroNotesDueDecember52024Member_7C61B95B979012E070DF39BF39F1DFC8" xlink:to="lab_itw_A0.25EuroNotesDueDecember52024Member_7C61B95B979012E070DF39BF39F1DFC8" xlink:type="arc"/>
<link:label id="lab_itw_A2.65NotesDueNovember152026Member_6D19B12B1AA3F7D9C91E39BF39F1F295_terseLabel_en-US" xlink:label="lab_itw_A2.65NotesDueNovember152026Member_6D19B12B1AA3F7D9C91E39BF39F1F295" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2.65% notes due November 15, 2026 </link:label>
<link:label id="lab_itw_A2.65NotesDueNovember152026Member_6D19B12B1AA3F7D9C91E39BF39F1F295_label_en-US" xlink:label="lab_itw_A2.65NotesDueNovember152026Member_6D19B12B1AA3F7D9C91E39BF39F1F295" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 2.65% Notes Due November 15, 2026 [Member] </link:label>
<link:label id="lab_itw_A2.65NotesDueNovember152026Member_6D19B12B1AA3F7D9C91E39BF39F1F295_documentation_en-US" xlink:label="lab_itw_A2.65NotesDueNovember152026Member_6D19B12B1AA3F7D9C91E39BF39F1F295" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 2.65% Notes Due November 15, 2026 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A2.65NotesDueNovember152026Member" xlink:label="loc_itw_A2.65NotesDueNovember152026Member_6D19B12B1AA3F7D9C91E39BF39F1F295" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A2.65NotesDueNovember152026Member_6D19B12B1AA3F7D9C91E39BF39F1F295" xlink:to="lab_itw_A2.65NotesDueNovember152026Member_6D19B12B1AA3F7D9C91E39BF39F1F295" xlink:type="arc"/>
<link:label id="lab_itw_A0.625EuroNotesDueDecember52027Member_0448546DF13C3D9EBE8939BF39F1D3AC_terseLabel_en-US" xlink:label="lab_itw_A0.625EuroNotesDueDecember52027Member_0448546DF13C3D9EBE8939BF39F1D3AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 0.625% Euro notes due December 5, 2027 </link:label>
<link:label id="lab_itw_A0.625EuroNotesDueDecember52027Member_0448546DF13C3D9EBE8939BF39F1D3AC_label_en-US" xlink:label="lab_itw_A0.625EuroNotesDueDecember52027Member_0448546DF13C3D9EBE8939BF39F1D3AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 0.625% Euro Notes Due December 5, 2027 [Member] </link:label>
<link:label id="lab_itw_A0.625EuroNotesDueDecember52027Member_0448546DF13C3D9EBE8939BF39F1D3AC_documentation_en-US" xlink:label="lab_itw_A0.625EuroNotesDueDecember52027Member_0448546DF13C3D9EBE8939BF39F1D3AC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 0.625% Euro Notes Due December 5, 2027 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A0.625EuroNotesDueDecember52027Member" xlink:label="loc_itw_A0.625EuroNotesDueDecember52027Member_0448546DF13C3D9EBE8939BF39F1D3AC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A0.625EuroNotesDueDecember52027Member_0448546DF13C3D9EBE8939BF39F1D3AC" xlink:to="lab_itw_A0.625EuroNotesDueDecember52027Member_0448546DF13C3D9EBE8939BF39F1D3AC" xlink:type="arc"/>
<link:label id="lab_itw_A2.125EuroNotesDueMay223030Member_336E5309D68AE246EAD139BF39F2F47B_terseLabel_en-US" xlink:label="lab_itw_A2.125EuroNotesDueMay223030Member_336E5309D68AE246EAD139BF39F2F47B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2.125% Euro notes due May 22, 2030 </link:label>
<link:label id="lab_itw_A2.125EuroNotesDueMay223030Member_336E5309D68AE246EAD139BF39F2F47B_label_en-US" xlink:label="lab_itw_A2.125EuroNotesDueMay223030Member_336E5309D68AE246EAD139BF39F2F47B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 2.125% Euro Notes Due May 22, 3030 [Member] </link:label>
<link:label id="lab_itw_A2.125EuroNotesDueMay223030Member_336E5309D68AE246EAD139BF39F2F47B_documentation_en-US" xlink:label="lab_itw_A2.125EuroNotesDueMay223030Member_336E5309D68AE246EAD139BF39F2F47B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 2.125% Euro notes due May 22, 3030 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A2.125EuroNotesDueMay223030Member" xlink:label="loc_itw_A2.125EuroNotesDueMay223030Member_336E5309D68AE246EAD139BF39F2F47B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A2.125EuroNotesDueMay223030Member_336E5309D68AE246EAD139BF39F2F47B" xlink:to="lab_itw_A2.125EuroNotesDueMay223030Member_336E5309D68AE246EAD139BF39F2F47B" xlink:type="arc"/>
<link:label id="lab_itw_A1.00EuroNotesDueJune52031Member_AA28BEC48CA3921FE72A39BF39F24E0F_terseLabel_en-US" xlink:label="lab_itw_A1.00EuroNotesDueJune52031Member_AA28BEC48CA3921FE72A39BF39F24E0F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 1.00% Euro notes due June 5, 2031 </link:label>
<link:label id="lab_itw_A1.00EuroNotesDueJune52031Member_AA28BEC48CA3921FE72A39BF39F24E0F_label_en-US" xlink:label="lab_itw_A1.00EuroNotesDueJune52031Member_AA28BEC48CA3921FE72A39BF39F24E0F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 1.00% Euro Notes Due June 5, 2031 [Member] </link:label>
<link:label id="lab_itw_A1.00EuroNotesDueJune52031Member_AA28BEC48CA3921FE72A39BF39F24E0F_documentation_en-US" xlink:label="lab_itw_A1.00EuroNotesDueJune52031Member_AA28BEC48CA3921FE72A39BF39F24E0F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 1.00% Euro Notes Due June 5, 2031 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A1.00EuroNotesDueJune52031Member" xlink:label="loc_itw_A1.00EuroNotesDueJune52031Member_AA28BEC48CA3921FE72A39BF39F24E0F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A1.00EuroNotesDueJune52031Member_AA28BEC48CA3921FE72A39BF39F24E0F" xlink:to="lab_itw_A1.00EuroNotesDueJune52031Member_AA28BEC48CA3921FE72A39BF39F24E0F" xlink:type="arc"/>
<link:label id="lab_itw_A3.00EuroNotesDueMay192034Member_E7BB960E7ECB7AFCF33C39BF39F2EE45_terseLabel_en-US" xlink:label="lab_itw_A3.00EuroNotesDueMay192034Member_E7BB960E7ECB7AFCF33C39BF39F2EE45" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 3.00% Euro notes due May 19, 2034 </link:label>
<link:label id="lab_itw_A3.00EuroNotesDueMay192034Member_E7BB960E7ECB7AFCF33C39BF39F2EE45_label_en-US" xlink:label="lab_itw_A3.00EuroNotesDueMay192034Member_E7BB960E7ECB7AFCF33C39BF39F2EE45" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 3.00% Euro Notes Due May 19, 2034 [Member] </link:label>
<link:label id="lab_itw_A3.00EuroNotesDueMay192034Member_E7BB960E7ECB7AFCF33C39BF39F2EE45_documentation_en-US" xlink:label="lab_itw_A3.00EuroNotesDueMay192034Member_E7BB960E7ECB7AFCF33C39BF39F2EE45" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 3.00% Euro Notes Due May 19, 2034 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A3.00EuroNotesDueMay192034Member" xlink:label="loc_itw_A3.00EuroNotesDueMay192034Member_E7BB960E7ECB7AFCF33C39BF39F2EE45" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A3.00EuroNotesDueMay192034Member_E7BB960E7ECB7AFCF33C39BF39F2EE45" xlink:to="lab_itw_A3.00EuroNotesDueMay192034Member_E7BB960E7ECB7AFCF33C39BF39F2EE45" xlink:type="arc"/>
<link:label id="lab_itw_A4.875NotesDueSeptember152041Member_D161BDBA53B4371B1D8339BF39F2E580_terseLabel_en-US" xlink:label="lab_itw_A4.875NotesDueSeptember152041Member_D161BDBA53B4371B1D8339BF39F2E580" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 4.875% notes due September 15, 2041 </link:label>
<link:label id="lab_itw_A4.875NotesDueSeptember152041Member_D161BDBA53B4371B1D8339BF39F2E580_label_en-US" xlink:label="lab_itw_A4.875NotesDueSeptember152041Member_D161BDBA53B4371B1D8339BF39F2E580" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 4.875% Notes Due September 15, 2041 [Member] </link:label>
<link:label id="lab_itw_A4.875NotesDueSeptember152041Member_D161BDBA53B4371B1D8339BF39F2E580_documentation_en-US" xlink:label="lab_itw_A4.875NotesDueSeptember152041Member_D161BDBA53B4371B1D8339BF39F2E580" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 4.875% notes due September 15, 2041 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A4.875NotesDueSeptember152041Member" xlink:label="loc_itw_A4.875NotesDueSeptember152041Member_D161BDBA53B4371B1D8339BF39F2E580" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A4.875NotesDueSeptember152041Member_D161BDBA53B4371B1D8339BF39F2E580" xlink:to="lab_itw_A4.875NotesDueSeptember152041Member_D161BDBA53B4371B1D8339BF39F2E580" xlink:type="arc"/>
<link:label id="lab_itw_A3.90NotesDueSeptember12042Member_D7C454297033B9471A4539BF39F280ED_terseLabel_en-US" xlink:label="lab_itw_A3.90NotesDueSeptember12042Member_D7C454297033B9471A4539BF39F280ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 3.90% notes due September 1, 2042 </link:label>
<link:label id="lab_itw_A3.90NotesDueSeptember12042Member_D7C454297033B9471A4539BF39F280ED_label_en-US" xlink:label="lab_itw_A3.90NotesDueSeptember12042Member_D7C454297033B9471A4539BF39F280ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 3.90% Notes Due September 1, 2042 [Member] </link:label>
<link:label id="lab_itw_A3.90NotesDueSeptember12042Member_D7C454297033B9471A4539BF39F280ED_documentation_en-US" xlink:label="lab_itw_A3.90NotesDueSeptember12042Member_D7C454297033B9471A4539BF39F280ED" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 3.90% notes due September 1, 2042 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A3.90NotesDueSeptember12042Member" xlink:label="loc_itw_A3.90NotesDueSeptember12042Member_D7C454297033B9471A4539BF39F280ED" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A3.90NotesDueSeptember12042Member_D7C454297033B9471A4539BF39F280ED" xlink:to="lab_itw_A3.90NotesDueSeptember12042Member_D7C454297033B9471A4539BF39F280ED" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongtermDebtTypeAxis_8C26632BDCBB97A1541339BF39F36213_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_8C26632BDCBB97A1541339BF39F36213" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Type [Axis] </link:label>
<link:label id="lab_us-gaap_LongtermDebtTypeAxis_8C26632BDCBB97A1541339BF39F36213_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_8C26632BDCBB97A1541339BF39F36213" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Type [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_8C26632BDCBB97A1541339BF39F36213" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_8C26632BDCBB97A1541339BF39F36213" xlink:to="lab_us-gaap_LongtermDebtTypeAxis_8C26632BDCBB97A1541339BF39F36213" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongtermDebtTypeDomain_962784C9993536924F5139BF39F3F8B8_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_962784C9993536924F5139BF39F3F8B8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Type [Domain] </link:label>
<link:label id="lab_us-gaap_LongtermDebtTypeDomain_962784C9993536924F5139BF39F3F8B8_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_962784C9993536924F5139BF39F3F8B8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Type [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_962784C9993536924F5139BF39F3F8B8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_962784C9993536924F5139BF39F3F8B8" xlink:to="lab_us-gaap_LongtermDebtTypeDomain_962784C9993536924F5139BF39F3F8B8" xlink:type="arc"/>
<link:label id="lab_us-gaap_UnsecuredDebtMember_936413CB9E526EE3298639BF39F3BA6E_verboseLabel_en-US" xlink:label="lab_us-gaap_UnsecuredDebtMember_936413CB9E526EE3298639BF39F3BA6E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Unsecured debt </link:label>
<link:label id="lab_us-gaap_UnsecuredDebtMember_936413CB9E526EE3298639BF39F3BA6E_label_en-US" xlink:label="lab_us-gaap_UnsecuredDebtMember_936413CB9E526EE3298639BF39F3BA6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Unsecured Debt [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_UnsecuredDebtMember" xlink:label="loc_us-gaap_UnsecuredDebtMember_936413CB9E526EE3298639BF39F3BA6E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnsecuredDebtMember_936413CB9E526EE3298639BF39F3BA6E" xlink:to="lab_us-gaap_UnsecuredDebtMember_936413CB9E526EE3298639BF39F3BA6E" xlink:type="arc"/>
<link:label id="lab_itw_OtherBorrowingMember_2B8C37949E680255736F39BF39F31CB6_verboseLabel_en-US" xlink:label="lab_itw_OtherBorrowingMember_2B8C37949E680255736F39BF39F31CB6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other borrowings </link:label>
<link:label id="lab_itw_OtherBorrowingMember_2B8C37949E680255736F39BF39F31CB6_label_en-US" xlink:label="lab_itw_OtherBorrowingMember_2B8C37949E680255736F39BF39F31CB6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Borrowing [Member] </link:label>
<link:label id="lab_itw_OtherBorrowingMember_2B8C37949E680255736F39BF39F31CB6_documentation_en-US" xlink:label="lab_itw_OtherBorrowingMember_2B8C37949E680255736F39BF39F31CB6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Other borrowing. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_OtherBorrowingMember" xlink:label="loc_itw_OtherBorrowingMember_2B8C37949E680255736F39BF39F31CB6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_OtherBorrowingMember_2B8C37949E680255736F39BF39F31CB6" xlink:to="lab_itw_OtherBorrowingMember_2B8C37949E680255736F39BF39F31CB6" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentLineItems_346121DB3731937A55E139BF39F44A9B_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_346121DB3731937A55E139BF39F44A9B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Line Items] </link:label>
<link:label id="lab_us-gaap_DebtInstrumentLineItems_346121DB3731937A55E139BF39F44A9B_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_346121DB3731937A55E139BF39F44A9B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_346121DB3731937A55E139BF39F44A9B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentLineItems_346121DB3731937A55E139BF39F44A9B" xlink:to="lab_us-gaap_DebtInstrumentLineItems_346121DB3731937A55E139BF39F44A9B" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_4E5D68FD98FD4A811DB839BF39F48A28_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_4E5D68FD98FD4A811DB839BF39F48A28" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Interest rate, stated percentage </link:label>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_4E5D68FD98FD4A811DB839BF39F48A28_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_4E5D68FD98FD4A811DB839BF39F48A28" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Interest Rate, Stated Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_4E5D68FD98FD4A811DB839BF39F48A28" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_4E5D68FD98FD4A811DB839BF39F48A28" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_4E5D68FD98FD4A811DB839BF39F48A28" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_3D9DB185B371C759F2EF39BF39F4BAAF_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_3D9DB185B371C759F2EF39BF39F4BAAF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Effective interest rate </link:label>
<link:label id="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_3D9DB185B371C759F2EF39BF39F4BAAF_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_3D9DB185B371C759F2EF39BF39F4BAAF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Interest Rate, Effective Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_3D9DB185B371C759F2EF39BF39F4BAAF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_3D9DB185B371C759F2EF39BF39F4BAAF" xlink:to="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_3D9DB185B371C759F2EF39BF39F4BAAF" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebt_E10346895E3CA6D00EDE39BF39F5E4F2_totalLabel_en-US" xlink:label="lab_us-gaap_LongTermDebt_E10346895E3CA6D00EDE39BF39F5E4F2" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Carrying Value </link:label>
<link:label id="lab_us-gaap_LongTermDebt_E10346895E3CA6D00EDE39BF39F5E4F2_label_en-US" xlink:label="lab_us-gaap_LongTermDebt_E10346895E3CA6D00EDE39BF39F5E4F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_E10346895E3CA6D00EDE39BF39F5E4F2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebt_E10346895E3CA6D00EDE39BF39F5E4F2" xlink:to="lab_us-gaap_LongTermDebt_E10346895E3CA6D00EDE39BF39F5E4F2" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtFairValue_8875BE5F5C58D688BC0039BF39F557BF_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_8875BE5F5C58D688BC0039BF39F557BF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair Value </link:label>
<link:label id="lab_us-gaap_LongTermDebtFairValue_8875BE5F5C58D688BC0039BF39F557BF_label_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_8875BE5F5C58D688BC0039BF39F557BF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Fair Value </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="loc_us-gaap_LongTermDebtFairValue_8875BE5F5C58D688BC0039BF39F557BF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtFairValue_8875BE5F5C58D688BC0039BF39F557BF" xlink:to="lab_us-gaap_LongTermDebtFairValue_8875BE5F5C58D688BC0039BF39F557BF" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtCurrent_76666A545248DCEDE1A039BF39F52519_negatedLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_76666A545248DCEDE1A039BF39F52519" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Less: Current maturities of long-term debt </link:label>
<link:label id="lab_us-gaap_LongTermDebtCurrent_76666A545248DCEDE1A039BF39F52519_label_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_76666A545248DCEDE1A039BF39F52519" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Current Maturities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_76666A545248DCEDE1A039BF39F52519" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtCurrent_76666A545248DCEDE1A039BF39F52519" xlink:to="lab_us-gaap_LongTermDebtCurrent_76666A545248DCEDE1A039BF39F52519" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtNoncurrent_E9808A8CC51BC381321C39BF39F5CF27_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_E9808A8CC51BC381321C39BF39F5CF27" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total long-term debt </link:label>
<link:label id="lab_us-gaap_LongTermDebtNoncurrent_E9808A8CC51BC381321C39BF39F5CF27_label_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_E9808A8CC51BC381321C39BF39F5CF27" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Excluding Current Maturities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_E9808A8CC51BC381321C39BF39F5CF27" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtNoncurrent_E9808A8CC51BC381321C39BF39F5CF27" xlink:to="lab_us-gaap_LongTermDebtNoncurrent_E9808A8CC51BC381321C39BF39F5CF27" xlink:type="arc"/>
<link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_7E00934154A3ECFE15EE4A6D20D5CC90_verboseLabel_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_7E00934154A3ECFE15EE4A6D20D5CC90" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Stock-Based Compensation </link:label>
<link:label id="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_7E00934154A3ECFE15EE4A6D20D5CC90_label_en-US" xlink:label="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_7E00934154A3ECFE15EE4A6D20D5CC90" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_7E00934154A3ECFE15EE4A6D20D5CC90" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_7E00934154A3ECFE15EE4A6D20D5CC90" xlink:to="lab_us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_7E00934154A3ECFE15EE4A6D20D5CC90" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_BBCE24D460222E2E05A00E4626AA23D8_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_BBCE24D460222E2E05A00E4626AA23D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Segment Reporting Information, by Segment [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_BBCE24D460222E2E05A00E4626AA23D8_label_en-US" xlink:label="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_BBCE24D460222E2E05A00E4626AA23D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Segment Reporting Information, by Segment [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_BBCE24D460222E2E05A00E4626AA23D8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_BBCE24D460222E2E05A00E4626AA23D8" xlink:to="lab_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_BBCE24D460222E2E05A00E4626AA23D8" xlink:type="arc"/>
<link:label id="lab_us-gaap_ConcentrationRiskByTypeAxis_6DABF271ED528F7A3D9A0E569FB63AEB_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByTypeAxis_6DABF271ED528F7A3D9A0E569FB63AEB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Concentration Risk Type [Axis] </link:label>
<link:label id="lab_us-gaap_ConcentrationRiskByTypeAxis_6DABF271ED528F7A3D9A0E569FB63AEB_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByTypeAxis_6DABF271ED528F7A3D9A0E569FB63AEB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration Risk Type [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_6DABF271ED528F7A3D9A0E569FB63AEB" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_7460D49455427977E44C0E569FC4823E_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain_7460D49455427977E44C0E569FC4823E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Concentration Risk Type [Domain] </link:label>
<link:label id="lab_us-gaap_ConcentrationRiskTypeDomain_7460D49455427977E44C0E569FC4823E_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskTypeDomain_7460D49455427977E44C0E569FC4823E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration Risk Type [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_7460D49455427977E44C0E569FC4823E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_GeographicConcentrationRiskMember_9124AC762C27C94A48ED0E578B03DE94_terseLabel_en-US" xlink:label="lab_us-gaap_GeographicConcentrationRiskMember_9124AC762C27C94A48ED0E578B03DE94" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Geographic Concentration Risk </link:label>
<link:label id="lab_us-gaap_GeographicConcentrationRiskMember_9124AC762C27C94A48ED0E578B03DE94_label_en-US" xlink:label="lab_us-gaap_GeographicConcentrationRiskMember_9124AC762C27C94A48ED0E578B03DE94" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Geographic Concentration Risk [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GeographicConcentrationRiskMember" xlink:label="loc_us-gaap_GeographicConcentrationRiskMember_9124AC762C27C94A48ED0E578B03DE94" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_718D3045B5346839D5B40E568A52D369_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_718D3045B5346839D5B40E568A52D369" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Concentration Risk Benchmark [Axis] </link:label>
<link:label id="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_718D3045B5346839D5B40E568A52D369_label_en-US" xlink:label="lab_us-gaap_ConcentrationRiskByBenchmarkAxis_718D3045B5346839D5B40E568A52D369" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Concentration Risk Benchmark [Axis] </link:label>
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<link:label id="lab_us-gaap_ConcentrationRiskBenchmarkDomain_686BD1F05BC44E3A83DB0E568A5DE556_terseLabel_en-US" xlink:label="lab_us-gaap_ConcentrationRiskBenchmarkDomain_686BD1F05BC44E3A83DB0E568A5DE556" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Concentration Risk Benchmark [Domain] </link:label>
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<link:label id="lab_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6C4228538DD1B9D3DCD92447D1AE7C90_label_en-US" xlink:label="lab_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6C4228538DD1B9D3DCD92447D1AE7C90" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Investment, Name [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis" xlink:label="loc_srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis_6C4228538DD1B9D3DCD92447D1AE7C90" xlink:type="locator"/>
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<link:label id="lab_srt_EquityMethodInvesteeNameDomain_B19CEE24E1B6ABE346B72447D1AE3848_terseLabel_en-US" xlink:label="lab_srt_EquityMethodInvesteeNameDomain_B19CEE24E1B6ABE346B72447D1AE3848" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Investment, Name [Domain] </link:label>
<link:label id="lab_srt_EquityMethodInvesteeNameDomain_B19CEE24E1B6ABE346B72447D1AE3848_label_en-US" xlink:label="lab_srt_EquityMethodInvesteeNameDomain_B19CEE24E1B6ABE346B72447D1AE3848" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Investment, Name [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_EquityMethodInvesteeNameDomain" xlink:label="loc_srt_EquityMethodInvesteeNameDomain_B19CEE24E1B6ABE346B72447D1AE3848" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_EquityMethodInvesteeNameDomain_B19CEE24E1B6ABE346B72447D1AE3848" xlink:to="lab_srt_EquityMethodInvesteeNameDomain_B19CEE24E1B6ABE346B72447D1AE3848" xlink:type="arc"/>
<link:label id="lab_itw_WilsonartInternationalHoldingsLLCMember_D3A25A52F5F35EC0253D2447D1AE712A_terseLabel_en-US" xlink:label="lab_itw_WilsonartInternationalHoldingsLLCMember_D3A25A52F5F35EC0253D2447D1AE712A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Wilsonart International Holdings LLC </link:label>
<link:label id="lab_itw_WilsonartInternationalHoldingsLLCMember_D3A25A52F5F35EC0253D2447D1AE712A_label_en-US" xlink:label="lab_itw_WilsonartInternationalHoldingsLLCMember_D3A25A52F5F35EC0253D2447D1AE712A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Wilsonart International Holdings LLC [Member] </link:label>
<link:label id="lab_itw_WilsonartInternationalHoldingsLLCMember_D3A25A52F5F35EC0253D2447D1AE712A_documentation_en-US" xlink:label="lab_itw_WilsonartInternationalHoldingsLLCMember_D3A25A52F5F35EC0253D2447D1AE712A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Wilsonart International Holdings LLC [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_WilsonartInternationalHoldingsLLCMember" xlink:label="loc_itw_WilsonartInternationalHoldingsLLCMember_D3A25A52F5F35EC0253D2447D1AE712A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_WilsonartInternationalHoldingsLLCMember_D3A25A52F5F35EC0253D2447D1AE712A" xlink:to="lab_itw_WilsonartInternationalHoldingsLLCMember_D3A25A52F5F35EC0253D2447D1AE712A" xlink:type="arc"/>
<link:label id="lab_itw_DecorativeSurfacesMember_095A833E6292A36175652447D1AF3DB7_terseLabel_en-US" xlink:label="lab_itw_DecorativeSurfacesMember_095A833E6292A36175652447D1AF3DB7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Decorative Surfaces </link:label>
<link:label id="lab_itw_DecorativeSurfacesMember_095A833E6292A36175652447D1AF3DB7_label_en-US" xlink:label="lab_itw_DecorativeSurfacesMember_095A833E6292A36175652447D1AF3DB7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Decorative Surfaces [Member] </link:label>
<link:label id="lab_itw_DecorativeSurfacesMember_095A833E6292A36175652447D1AF3DB7_documentation_en-US" xlink:label="lab_itw_DecorativeSurfacesMember_095A833E6292A36175652447D1AF3DB7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Decorative surfaces. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_DecorativeSurfacesMember" xlink:label="loc_itw_DecorativeSurfacesMember_095A833E6292A36175652447D1AF3DB7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_DecorativeSurfacesMember_095A833E6292A36175652447D1AF3DB7" xlink:to="lab_itw_DecorativeSurfacesMember_095A833E6292A36175652447D1AF3DB7" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7F12587E0663ACBAC1FD2447D1AF57D6_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7F12587E0663ACBAC1FD2447D1AF57D6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Equity Method Investments [Line Items] </link:label>
<link:label id="lab_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7F12587E0663ACBAC1FD2447D1AF57D6_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7F12587E0663ACBAC1FD2447D1AF57D6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Equity Method Investments [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfEquityMethodInvestmentsLineItems" xlink:label="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7F12587E0663ACBAC1FD2447D1AF57D6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7F12587E0663ACBAC1FD2447D1AF57D6" xlink:to="lab_us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_7F12587E0663ACBAC1FD2447D1AF57D6" xlink:type="arc"/>
<link:label id="lab_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_466345700A0D5FF02DB32447D1AF153C_terseLabel_en-US" xlink:label="lab_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_466345700A0D5FF02DB32447D1AF153C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Gain (loss) on disposal of operations and affiliates </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_466345700A0D5FF02DB32447D1AF153C" xlink:type="locator"/>
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<link:label id="lab_itw_BusinessSegmentPercentageSold_2DD52E11F18F5890C1C92447D1B06A19_verboseLabel_en-US" xlink:label="lab_itw_BusinessSegmentPercentageSold_2DD52E11F18F5890C1C92447D1B06A19" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Percentage of segment divested </link:label>
<link:label id="lab_itw_BusinessSegmentPercentageSold_2DD52E11F18F5890C1C92447D1B06A19_label_en-US" xlink:label="lab_itw_BusinessSegmentPercentageSold_2DD52E11F18F5890C1C92447D1B06A19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Business Segment, Percentage Sold </link:label>
<link:label id="lab_itw_BusinessSegmentPercentageSold_2DD52E11F18F5890C1C92447D1B06A19_documentation_en-US" xlink:label="lab_itw_BusinessSegmentPercentageSold_2DD52E11F18F5890C1C92447D1B06A19" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Business Segment, Percentage Sold </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_BusinessSegmentPercentageSold" xlink:label="loc_itw_BusinessSegmentPercentageSold_2DD52E11F18F5890C1C92447D1B06A19" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_BusinessSegmentPercentageSold_2DD52E11F18F5890C1C92447D1B06A19" xlink:to="lab_itw_BusinessSegmentPercentageSold_2DD52E11F18F5890C1C92447D1B06A19" xlink:type="arc"/>
<link:label id="lab_us-gaap_EquityMethodInvestmentOwnershipPercentage_CA397CB9B6016BEFECB02447D1B068AE_terseLabel_en-US" xlink:label="lab_us-gaap_EquityMethodInvestmentOwnershipPercentage_CA397CB9B6016BEFECB02447D1B068AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Ownership percentage </link:label>
<link:label id="lab_us-gaap_EquityMethodInvestmentOwnershipPercentage_CA397CB9B6016BEFECB02447D1B068AE_label_en-US" xlink:label="lab_us-gaap_EquityMethodInvestmentOwnershipPercentage_CA397CB9B6016BEFECB02447D1B068AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Method Investment, Ownership Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:label="loc_us-gaap_EquityMethodInvestmentOwnershipPercentage_CA397CB9B6016BEFECB02447D1B068AE" xlink:type="locator"/>
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<link:label id="lab_itw_EquityMethodInvestmentPercentageSold_A30CDD4CDAAAB18D2F722447D1B024B5_verboseLabel_en-US" xlink:label="lab_itw_EquityMethodInvestmentPercentageSold_A30CDD4CDAAAB18D2F722447D1B024B5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Preferred units owned by other party </link:label>
<link:label id="lab_itw_EquityMethodInvestmentPercentageSold_A30CDD4CDAAAB18D2F722447D1B024B5_label_en-US" xlink:label="lab_itw_EquityMethodInvestmentPercentageSold_A30CDD4CDAAAB18D2F722447D1B024B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Method Investment, Percentage Sold </link:label>
<link:label id="lab_itw_EquityMethodInvestmentPercentageSold_A30CDD4CDAAAB18D2F722447D1B024B5_documentation_en-US" xlink:label="lab_itw_EquityMethodInvestmentPercentageSold_A30CDD4CDAAAB18D2F722447D1B024B5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Equity Method Investment, Percentage Sold </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_EquityMethodInvestmentPercentageSold" xlink:label="loc_itw_EquityMethodInvestmentPercentageSold_A30CDD4CDAAAB18D2F722447D1B024B5" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PreferredStockDividendRatePercentage_7465704D84E62EF6E45B2447D1B0839C_verboseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockDividendRatePercentage_7465704D84E62EF6E45B2447D1B0839C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Dividend rate for preferred units </link:label>
<link:label id="lab_us-gaap_PreferredStockDividendRatePercentage_7465704D84E62EF6E45B2447D1B0839C_label_en-US" xlink:label="lab_us-gaap_PreferredStockDividendRatePercentage_7465704D84E62EF6E45B2447D1B0839C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Preferred Stock, Dividend Rate, Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreferredStockDividendRatePercentage" xlink:label="loc_us-gaap_PreferredStockDividendRatePercentage_7465704D84E62EF6E45B2447D1B0839C" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital_228D7B096075BA542F622447D1B0AF80_verboseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital_228D7B096075BA542F622447D1B0AF80" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash dividend distribution </link:label>
<link:label id="lab_us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital_228D7B096075BA542F622447D1B0AF80_label_en-US" xlink:label="lab_us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital_228D7B096075BA542F622447D1B0AF80" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Equity Method Investment, Distribution, Return of Capital </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital" xlink:label="loc_us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital_228D7B096075BA542F622447D1B0AF80" xlink:type="locator"/>
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<link:label id="lab_itw_GainLossonDividendinExcessofEquityMethodInvestmentCarryingValue_3D2CDC5510D94549AF1C2447D1B0D444_terseLabel_en-US" xlink:label="lab_itw_GainLossonDividendinExcessofEquityMethodInvestmentCarryingValue_3D2CDC5510D94549AF1C2447D1B0D444" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Pre-tax gain from dividends in excess of equity investment </link:label>
<link:label id="lab_itw_GainLossonDividendinExcessofEquityMethodInvestmentCarryingValue_3D2CDC5510D94549AF1C2447D1B0D444_label_en-US" xlink:label="lab_itw_GainLossonDividendinExcessofEquityMethodInvestmentCarryingValue_3D2CDC5510D94549AF1C2447D1B0D444" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gain (Loss) on Dividend in Excess of Equity Method Investment Carrying Value </link:label>
<link:label id="lab_itw_GainLossonDividendinExcessofEquityMethodInvestmentCarryingValue_3D2CDC5510D94549AF1C2447D1B0D444_documentation_en-US" xlink:label="lab_itw_GainLossonDividendinExcessofEquityMethodInvestmentCarryingValue_3D2CDC5510D94549AF1C2447D1B0D444" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Gain (Loss) on Dividend in Excess of Equity Method Investment Carrying Value </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_GainLossonDividendinExcessofEquityMethodInvestmentCarryingValue" xlink:label="loc_itw_GainLossonDividendinExcessofEquityMethodInvestmentCarryingValue_3D2CDC5510D94549AF1C2447D1B0D444" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EquityMethodInvestments_20B676A90713731536132447D1B1E89B_terseLabel_en-US" xlink:label="lab_us-gaap_EquityMethodInvestments_20B676A90713731536132447D1B1E89B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity method investment </link:label>
<link:label id="lab_us-gaap_EquityMethodInvestments_20B676A90713731536132447D1B1E89B_label_en-US" xlink:label="lab_us-gaap_EquityMethodInvestments_20B676A90713731536132447D1B1E89B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Equity Method Investments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EquityMethodInvestments" xlink:label="loc_us-gaap_EquityMethodInvestments_20B676A90713731536132447D1B1E89B" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_1D087B3E4220E4066933381028C3AD4E_label_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract_1D087B3E4220E4066933381028C3AD4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Financial Position [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_1D087B3E4220E4066933381028C3AD4E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AssetsAbstract_1D95C2585EA36B27566C381028C361A9_verboseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract_1D95C2585EA36B27566C381028C361A9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Assets </link:label>
<link:label id="lab_us-gaap_AssetsAbstract_1D95C2585EA36B27566C381028C361A9_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract_1D95C2585EA36B27566C381028C361A9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets [Abstract] </link:label>
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<link:label id="lab_us-gaap_AssetsCurrentAbstract_D4DC3D7EC76BB83BEEFA381028C3C3AD_verboseLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_D4DC3D7EC76BB83BEEFA381028C3C3AD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Current Assets: </link:label>
<link:label id="lab_us-gaap_AssetsCurrentAbstract_D4DC3D7EC76BB83BEEFA381028C3C3AD_label_en-US" xlink:label="lab_us-gaap_AssetsCurrentAbstract_D4DC3D7EC76BB83BEEFA381028C3C3AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets, Current [Abstract] </link:label>
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<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_F5C5E3256B405C69A312381028C4A2DB_verboseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_F5C5E3256B405C69A312381028C4A2DB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash and equivalents </link:label>
<link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_F5C5E3256B405C69A312381028C4A2DB_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_F5C5E3256B405C69A312381028C4A2DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, at Carrying Value </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_F5C5E3256B405C69A312381028C4A2DB" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ReceivablesNetCurrent_B7870DB9C727D9F10759381028C4FDB4_verboseLabel_en-US" xlink:label="lab_us-gaap_ReceivablesNetCurrent_B7870DB9C727D9F10759381028C4FDB4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Trade receivables </link:label>
<link:label id="lab_us-gaap_ReceivablesNetCurrent_B7870DB9C727D9F10759381028C4FDB4_label_en-US" xlink:label="lab_us-gaap_ReceivablesNetCurrent_B7870DB9C727D9F10759381028C4FDB4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Receivables, Net, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ReceivablesNetCurrent" xlink:label="loc_us-gaap_ReceivablesNetCurrent_B7870DB9C727D9F10759381028C4FDB4" xlink:type="locator"/>
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<link:label id="lab_us-gaap_InventoryNet_9579C97699C04546FCB4381028C47D8C_verboseLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_9579C97699C04546FCB4381028C47D8C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Inventories </link:label>
<link:label id="lab_us-gaap_InventoryNet_9579C97699C04546FCB4381028C47D8C_label_en-US" xlink:label="lab_us-gaap_InventoryNet_9579C97699C04546FCB4381028C47D8C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_9579C97699C04546FCB4381028C47D8C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryNet_9579C97699C04546FCB4381028C47D8C" xlink:to="lab_us-gaap_InventoryNet_9579C97699C04546FCB4381028C47D8C" xlink:type="arc"/>
<link:label id="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_3AB3D80239CC16A9F3DA381028C4694A_verboseLabel_en-US" xlink:label="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_3AB3D80239CC16A9F3DA381028C4694A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Prepaid expenses and other current assets </link:label>
<link:label id="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_3AB3D80239CC16A9F3DA381028C4694A_label_en-US" xlink:label="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_3AB3D80239CC16A9F3DA381028C4694A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Prepaid Expense and Other Assets, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_3AB3D80239CC16A9F3DA381028C4694A" xlink:type="locator"/>
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<link:label id="lab_itw_AssetsHeldforsaleDivestitureCurrent_395C6D29AD11903F1D41381028C539DF_terseLabel_en-US" xlink:label="lab_itw_AssetsHeldforsaleDivestitureCurrent_395C6D29AD11903F1D41381028C539DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Assets held for sale </link:label>
<link:label id="lab_itw_AssetsHeldforsaleDivestitureCurrent_395C6D29AD11903F1D41381028C539DF_label_en-US" xlink:label="lab_itw_AssetsHeldforsaleDivestitureCurrent_395C6D29AD11903F1D41381028C539DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets Held-for-sale, Divestiture, Current </link:label>
<link:label id="lab_itw_AssetsHeldforsaleDivestitureCurrent_395C6D29AD11903F1D41381028C539DF_documentation_en-US" xlink:label="lab_itw_AssetsHeldforsaleDivestitureCurrent_395C6D29AD11903F1D41381028C539DF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Assets Held-for-sale, Divestiture, Current </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_AssetsHeldforsaleDivestitureCurrent" xlink:label="loc_itw_AssetsHeldforsaleDivestitureCurrent_395C6D29AD11903F1D41381028C539DF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_AssetsHeldforsaleDivestitureCurrent_395C6D29AD11903F1D41381028C539DF" xlink:to="lab_itw_AssetsHeldforsaleDivestitureCurrent_395C6D29AD11903F1D41381028C539DF" xlink:type="arc"/>
<link:label id="lab_us-gaap_AssetsCurrent_3010F390338679AA8BD1381028C56FBC_totalLabel_en-US" xlink:label="lab_us-gaap_AssetsCurrent_3010F390338679AA8BD1381028C56FBC" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total current assets </link:label>
<link:label id="lab_us-gaap_AssetsCurrent_3010F390338679AA8BD1381028C56FBC_label_en-US" xlink:label="lab_us-gaap_AssetsCurrent_3010F390338679AA8BD1381028C56FBC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_3010F390338679AA8BD1381028C56FBC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsCurrent_3010F390338679AA8BD1381028C56FBC" xlink:to="lab_us-gaap_AssetsCurrent_3010F390338679AA8BD1381028C56FBC" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_3B35F1A706AA37E78452381028C55391_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_3B35F1A706AA37E78452381028C55391" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Net plant and equipment </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentNet_3B35F1A706AA37E78452381028C55391_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentNet_3B35F1A706AA37E78452381028C55391" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_3B35F1A706AA37E78452381028C55391" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNet_3B35F1A706AA37E78452381028C55391" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentNet_3B35F1A706AA37E78452381028C55391" xlink:type="arc"/>
<link:label id="lab_us-gaap_Goodwill_3731F8D77A976043B5A3381028C54927_verboseLabel_en-US" xlink:label="lab_us-gaap_Goodwill_3731F8D77A976043B5A3381028C54927" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Goodwill </link:label>
<link:label id="lab_us-gaap_Goodwill_3731F8D77A976043B5A3381028C54927_label_en-US" xlink:label="lab_us-gaap_Goodwill_3731F8D77A976043B5A3381028C54927" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_3731F8D77A976043B5A3381028C54927" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_7878DF991A72469E1C7B381028C507C9_verboseLabel_en-US" xlink:label="lab_us-gaap_IntangibleAssetsNetExcludingGoodwill_7878DF991A72469E1C7B381028C507C9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Intangible assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_7878DF991A72469E1C7B381028C507C9" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DeferredIncomeTaxAssetsNet_92FE514E1E6C95F4A044381868656C45_verboseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxAssetsNet_92FE514E1E6C95F4A044381868656C45" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Deferred income taxes </link:label>
<link:label id="lab_us-gaap_DeferredIncomeTaxAssetsNet_92FE514E1E6C95F4A044381868656C45_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxAssetsNet_92FE514E1E6C95F4A044381868656C45" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Income Tax Assets, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxAssetsNet" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_92FE514E1E6C95F4A044381868656C45" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OtherAssetsNoncurrent_3423F87D311C29CE17CD381028C65C13_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_3423F87D311C29CE17CD381028C65C13" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other assets </link:label>
<link:label id="lab_us-gaap_OtherAssetsNoncurrent_3423F87D311C29CE17CD381028C65C13_label_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_3423F87D311C29CE17CD381028C65C13" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets, Noncurrent </link:label>
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<link:label id="lab_us-gaap_Assets_313972BFD7169A441D53381028C67CC1_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_313972BFD7169A441D53381028C67CC1" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total Assets </link:label>
<link:label id="lab_us-gaap_Assets_313972BFD7169A441D53381028C67CC1_label_en-US" xlink:label="lab_us-gaap_Assets_313972BFD7169A441D53381028C67CC1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_313972BFD7169A441D53381028C67CC1" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_E4371A3AE110DA322E80381028C60700_verboseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_E4371A3AE110DA322E80381028C60700" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Liabilities and Stockholders’ Equity </link:label>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_E4371A3AE110DA322E80381028C60700_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_E4371A3AE110DA322E80381028C60700" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities and Equity [Abstract] </link:label>
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<link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_A10A2ECAEAF64A8F543B381028C6B782_verboseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_A10A2ECAEAF64A8F543B381028C6B782" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Current Liabilities: </link:label>
<link:label id="lab_us-gaap_LiabilitiesCurrentAbstract_A10A2ECAEAF64A8F543B381028C6B782_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrentAbstract_A10A2ECAEAF64A8F543B381028C6B782" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Current [Abstract] </link:label>
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<link:label id="lab_us-gaap_DebtCurrent_BF31550CA01836D748B4381028C6B989_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtCurrent_BF31550CA01836D748B4381028C6B989" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Short-term debt </link:label>
<link:label id="lab_us-gaap_DebtCurrent_BF31550CA01836D748B4381028C6B989_label_en-US" xlink:label="lab_us-gaap_DebtCurrent_BF31550CA01836D748B4381028C6B989" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt, Current </link:label>
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<link:label id="lab_us-gaap_AccountsPayableCurrent_75535D8CEF00CC5D7596381028C7FE64_verboseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_75535D8CEF00CC5D7596381028C7FE64" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Accounts payable </link:label>
<link:label id="lab_us-gaap_AccountsPayableCurrent_75535D8CEF00CC5D7596381028C7FE64_label_en-US" xlink:label="lab_us-gaap_AccountsPayableCurrent_75535D8CEF00CC5D7596381028C7FE64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Payable, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_75535D8CEF00CC5D7596381028C7FE64" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AccruedLiabilitiesCurrent_7995D2B9DCD7B8D1A974381028C740DE_verboseLabel_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesCurrent_7995D2B9DCD7B8D1A974381028C740DE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Accrued expenses </link:label>
<link:label id="lab_us-gaap_AccruedLiabilitiesCurrent_7995D2B9DCD7B8D1A974381028C740DE_label_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesCurrent_7995D2B9DCD7B8D1A974381028C740DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrued Liabilities, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_7995D2B9DCD7B8D1A974381028C740DE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_7995D2B9DCD7B8D1A974381028C740DE" xlink:to="lab_us-gaap_AccruedLiabilitiesCurrent_7995D2B9DCD7B8D1A974381028C740DE" xlink:type="arc"/>
<link:label id="lab_us-gaap_InterestAndDividendsPayableCurrent_A8033165F8793A0C2DCE381028C717F8_verboseLabel_en-US" xlink:label="lab_us-gaap_InterestAndDividendsPayableCurrent_A8033165F8793A0C2DCE381028C717F8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash dividends payable </link:label>
<link:label id="lab_us-gaap_InterestAndDividendsPayableCurrent_A8033165F8793A0C2DCE381028C717F8_label_en-US" xlink:label="lab_us-gaap_InterestAndDividendsPayableCurrent_A8033165F8793A0C2DCE381028C717F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest and Dividends Payable, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestAndDividendsPayableCurrent" xlink:label="loc_us-gaap_InterestAndDividendsPayableCurrent_A8033165F8793A0C2DCE381028C717F8" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AccruedIncomeTaxesCurrent_1976AC9331730F32D851381028C76BE4_verboseLabel_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesCurrent_1976AC9331730F32D851381028C76BE4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Income taxes payable </link:label>
<link:label id="lab_us-gaap_AccruedIncomeTaxesCurrent_1976AC9331730F32D851381028C76BE4_label_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesCurrent_1976AC9331730F32D851381028C76BE4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrued Income Taxes, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedIncomeTaxesCurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_1976AC9331730F32D851381028C76BE4" xlink:type="locator"/>
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<link:label id="lab_itw_LiabilitiesHeldforsaleDivestitureCurrent_6C9053244D0878792DE2381028C71D7A_terseLabel_en-US" xlink:label="lab_itw_LiabilitiesHeldforsaleDivestitureCurrent_6C9053244D0878792DE2381028C71D7A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Liabilities held for sale </link:label>
<link:label id="lab_itw_LiabilitiesHeldforsaleDivestitureCurrent_6C9053244D0878792DE2381028C71D7A_label_en-US" xlink:label="lab_itw_LiabilitiesHeldforsaleDivestitureCurrent_6C9053244D0878792DE2381028C71D7A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities Held-for-sale, Divestiture, Current </link:label>
<link:label id="lab_itw_LiabilitiesHeldforsaleDivestitureCurrent_6C9053244D0878792DE2381028C71D7A_documentation_en-US" xlink:label="lab_itw_LiabilitiesHeldforsaleDivestitureCurrent_6C9053244D0878792DE2381028C71D7A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Liabilities Held-for-sale, Divestiture, Current </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_LiabilitiesHeldforsaleDivestitureCurrent" xlink:label="loc_itw_LiabilitiesHeldforsaleDivestitureCurrent_6C9053244D0878792DE2381028C71D7A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_LiabilitiesHeldforsaleDivestitureCurrent_6C9053244D0878792DE2381028C71D7A" xlink:to="lab_itw_LiabilitiesHeldforsaleDivestitureCurrent_6C9053244D0878792DE2381028C71D7A" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesCurrent_BB3DE0E47B724DACEB43381028C7A90F_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_BB3DE0E47B724DACEB43381028C7A90F" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total current liabilities </link:label>
<link:label id="lab_us-gaap_LiabilitiesCurrent_BB3DE0E47B724DACEB43381028C7A90F_label_en-US" xlink:label="lab_us-gaap_LiabilitiesCurrent_BB3DE0E47B724DACEB43381028C7A90F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_BB3DE0E47B724DACEB43381028C7A90F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesCurrent_BB3DE0E47B724DACEB43381028C7A90F" xlink:to="lab_us-gaap_LiabilitiesCurrent_BB3DE0E47B724DACEB43381028C7A90F" xlink:type="arc"/>
<link:label id="lab_us-gaap_LiabilitiesNoncurrentAbstract_4288BA58A151CAA96535381028C7B35E_verboseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesNoncurrentAbstract_4288BA58A151CAA96535381028C7B35E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Noncurrent Liabilities: </link:label>
<link:label id="lab_us-gaap_LiabilitiesNoncurrentAbstract_4288BA58A151CAA96535381028C7B35E_label_en-US" xlink:label="lab_us-gaap_LiabilitiesNoncurrentAbstract_4288BA58A151CAA96535381028C7B35E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Noncurrent [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesNoncurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesNoncurrentAbstract_4288BA58A151CAA96535381028C7B35E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesNoncurrentAbstract_4288BA58A151CAA96535381028C7B35E" xlink:to="lab_us-gaap_LiabilitiesNoncurrentAbstract_4288BA58A151CAA96535381028C7B35E" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtNoncurrent_1170667EC63280546BC7381028C8F139_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtNoncurrent_1170667EC63280546BC7381028C8F139" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Long-term debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_1170667EC63280546BC7381028C8F139" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtNoncurrent_1170667EC63280546BC7381028C8F139" xlink:to="lab_us-gaap_LongTermDebtNoncurrent_1170667EC63280546BC7381028C8F139" xlink:type="arc"/>
<link:label id="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_80ABFABE5A3404358023381028C840C2_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_80ABFABE5A3404358023381028C840C2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred income taxes </link:label>
<link:label id="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_80ABFABE5A3404358023381028C840C2_label_en-US" xlink:label="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_80ABFABE5A3404358023381028C840C2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Income Tax Liabilities, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_80ABFABE5A3404358023381028C840C2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_80ABFABE5A3404358023381028C840C2" xlink:to="lab_us-gaap_DeferredIncomeTaxLiabilitiesNet_80ABFABE5A3404358023381028C840C2" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccruedIncomeTaxesNoncurrent_3E2005810E20D3DF138D381028C8A890_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesNoncurrent_3E2005810E20D3DF138D381028C8A890" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Noncurrent income taxes payable </link:label>
<link:label id="lab_us-gaap_AccruedIncomeTaxesNoncurrent_3E2005810E20D3DF138D381028C8A890_label_en-US" xlink:label="lab_us-gaap_AccruedIncomeTaxesNoncurrent_3E2005810E20D3DF138D381028C8A890" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrued Income Taxes, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedIncomeTaxesNoncurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesNoncurrent_3E2005810E20D3DF138D381028C8A890" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_26D833839B95A3E138CD381028C876E5_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_26D833839B95A3E138CD381028C876E5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other liabilities </link:label>
<link:label id="lab_us-gaap_OtherLiabilitiesNoncurrent_26D833839B95A3E138CD381028C876E5_label_en-US" xlink:label="lab_us-gaap_OtherLiabilitiesNoncurrent_26D833839B95A3E138CD381028C876E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Liabilities, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_26D833839B95A3E138CD381028C876E5" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LiabilitiesNoncurrent_33ADC9D725267F525410381028C83D17_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesNoncurrent_33ADC9D725267F525410381028C83D17" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total noncurrent liabilities </link:label>
<link:label id="lab_us-gaap_LiabilitiesNoncurrent_33ADC9D725267F525410381028C83D17_label_en-US" xlink:label="lab_us-gaap_LiabilitiesNoncurrent_33ADC9D725267F525410381028C83D17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="loc_us-gaap_LiabilitiesNoncurrent_33ADC9D725267F525410381028C83D17" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesNoncurrent_33ADC9D725267F525410381028C83D17" xlink:to="lab_us-gaap_LiabilitiesNoncurrent_33ADC9D725267F525410381028C83D17" xlink:type="arc"/>
<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2CB7940DF4572048272A381028C95ACE_verboseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2CB7940DF4572048272A381028C95ACE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Stockholders’ Equity: </link:label>
<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2CB7940DF4572048272A381028C95ACE_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2CB7940DF4572048272A381028C95ACE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_2CB7940DF4572048272A381028C95ACE" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_25FEDD721BFC7C75A2BF381028C92446_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_25FEDD721BFC7C75A2BF381028C92446" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock (par value of $0.01 per share): </link:label>
<link:label id="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_25FEDD721BFC7C75A2BF381028C92446_label_en-US" xlink:label="lab_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_25FEDD721BFC7C75A2BF381028C92446" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract" xlink:label="loc_us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_25FEDD721BFC7C75A2BF381028C92446" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CommonStockValue_F09A0A4CEE9B7EA3A287381028C9254F_verboseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue_F09A0A4CEE9B7EA3A287381028C9254F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Issued- 550.0 shares in 2019 and 2018 Outstanding- 319.8 shares in 2019 and 328.1 shares in 2018 </link:label>
<link:label id="lab_us-gaap_CommonStockValue_F09A0A4CEE9B7EA3A287381028C9254F_label_en-US" xlink:label="lab_us-gaap_CommonStockValue_F09A0A4CEE9B7EA3A287381028C9254F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Value, Issued </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_F09A0A4CEE9B7EA3A287381028C9254F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_495074B2C1DDCA2B3207381028CE765E_verboseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_495074B2C1DDCA2B3207381028CE765E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Additional paid-in-capital </link:label>
<link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_495074B2C1DDCA2B3207381028CE765E_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_495074B2C1DDCA2B3207381028CE765E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Additional Paid in Capital, Common Stock </link:label>
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<link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_0EDE8BD74C2430BB77A7381028CFF0F7_verboseLabel_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_0EDE8BD74C2430BB77A7381028CFF0F7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Retained earnings </link:label>
<link:label id="lab_us-gaap_RetainedEarningsAccumulatedDeficit_0EDE8BD74C2430BB77A7381028CFF0F7_label_en-US" xlink:label="lab_us-gaap_RetainedEarningsAccumulatedDeficit_0EDE8BD74C2430BB77A7381028CFF0F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Retained Earnings (Accumulated Deficit) </link:label>
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<link:label id="lab_us-gaap_TreasuryStockValue_D00298D5B59503010CDE381028CF6CAB_negatedLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockValue_D00298D5B59503010CDE381028CF6CAB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Common stock held in treasury </link:label>
<link:label id="lab_us-gaap_TreasuryStockValue_D00298D5B59503010CDE381028CF6CAB_label_en-US" xlink:label="lab_us-gaap_TreasuryStockValue_D00298D5B59503010CDE381028CF6CAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Treasury Stock, Value </link:label>
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<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_E25F2A1089B16E0763B8381028CF1CBB_verboseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_E25F2A1089B16E0763B8381028CF1CBB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated other comprehensive income (loss) </link:label>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_E25F2A1089B16E0763B8381028CF1CBB_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_E25F2A1089B16E0763B8381028CF1CBB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accumulated Other Comprehensive Income (Loss), Net of Tax </link:label>
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<link:label id="lab_us-gaap_MinorityInterest_FDCF0248DCC579BB94D9381028CFC324_verboseLabel_en-US" xlink:label="lab_us-gaap_MinorityInterest_FDCF0248DCC579BB94D9381028CFC324" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Noncontrolling interest </link:label>
<link:label id="lab_us-gaap_MinorityInterest_FDCF0248DCC579BB94D9381028CFC324_label_en-US" xlink:label="lab_us-gaap_MinorityInterest_FDCF0248DCC579BB94D9381028CFC324" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity Attributable to Noncontrolling Interest </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterest" xlink:label="loc_us-gaap_MinorityInterest_FDCF0248DCC579BB94D9381028CFC324" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_E9AA54FF34E1B51E7234381028CF53FA_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_E9AA54FF34E1B51E7234381028CF53FA" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total stockholders’ equity </link:label>
<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_E9AA54FF34E1B51E7234381028CF53FA_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_E9AA54FF34E1B51E7234381028CF53FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_E9AA54FF34E1B51E7234381028CF53FA" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_B36241321C85D45A9555381028CF037A_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_B36241321C85D45A9555381028CF037A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total liabilities and stockholders' equity </link:label>
<link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_B36241321C85D45A9555381028CF037A_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_B36241321C85D45A9555381028CF037A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Liabilities and Equity </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_B36241321C85D45A9555381028CF037A" xlink:type="locator"/>
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<link:label id="lab_itw_SummaryOfStockBasedCompensationExpenseAbstract_057EF2EE7DA564B3DCCD002FB0425F14_verboseLabel_en-US" xlink:label="lab_itw_SummaryOfStockBasedCompensationExpenseAbstract_057EF2EE7DA564B3DCCD002FB0425F14" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Summary of stock-based compensation expense </link:label>
<link:label id="lab_itw_SummaryOfStockBasedCompensationExpenseAbstract_057EF2EE7DA564B3DCCD002FB0425F14_label_en-US" xlink:label="lab_itw_SummaryOfStockBasedCompensationExpenseAbstract_057EF2EE7DA564B3DCCD002FB0425F14" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Summary of Stock Based Compensation Expense [Abstract] </link:label>
<link:label id="lab_itw_SummaryOfStockBasedCompensationExpenseAbstract_057EF2EE7DA564B3DCCD002FB0425F14_documentation_en-US" xlink:label="lab_itw_SummaryOfStockBasedCompensationExpenseAbstract_057EF2EE7DA564B3DCCD002FB0425F14" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Summary of stock based compensation expense. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_SummaryOfStockBasedCompensationExpenseAbstract" xlink:label="loc_itw_SummaryOfStockBasedCompensationExpenseAbstract_057EF2EE7DA564B3DCCD002FB0425F14" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpense_009F58E14CFF5EC39904002FB0434C4A_verboseLabel_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpense_009F58E14CFF5EC39904002FB0434C4A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Pre-tax stock-based compensation expense </link:label>
<link:label id="lab_us-gaap_AllocatedShareBasedCompensationExpense_009F58E14CFF5EC39904002FB0434C4A_label_en-US" xlink:label="lab_us-gaap_AllocatedShareBasedCompensationExpense_009F58E14CFF5EC39904002FB0434C4A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_009F58E14CFF5EC39904002FB0434C4A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_846560305AA8316E162A002FB0436D35_negatedLabel_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_846560305AA8316E162A002FB0436D35" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Tax benefit </link:label>
<link:label id="lab_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_846560305AA8316E162A002FB0436D35_label_en-US" xlink:label="lab_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_846560305AA8316E162A002FB0436D35" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Expense, Tax Benefit </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_846560305AA8316E162A002FB0436D35" xlink:type="locator"/>
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<link:label id="lab_itw_StockBasedCompensationExpenseNetOfTax_F41D43F53F797F863502002FB043D9ED_totalLabel_en-US" xlink:label="lab_itw_StockBasedCompensationExpenseNetOfTax_F41D43F53F797F863502002FB043D9ED" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total stock-based compensation expense, net of tax </link:label>
<link:label id="lab_itw_StockBasedCompensationExpenseNetOfTax_F41D43F53F797F863502002FB043D9ED_label_en-US" xlink:label="lab_itw_StockBasedCompensationExpenseNetOfTax_F41D43F53F797F863502002FB043D9ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stock Based Compensation Expense Net of Tax </link:label>
<link:label id="lab_itw_StockBasedCompensationExpenseNetOfTax_F41D43F53F797F863502002FB043D9ED_documentation_en-US" xlink:label="lab_itw_StockBasedCompensationExpenseNetOfTax_F41D43F53F797F863502002FB043D9ED" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Stock based compensation expense net of tax. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_StockBasedCompensationExpenseNetOfTax" xlink:label="loc_itw_StockBasedCompensationExpenseNetOfTax_F41D43F53F797F863502002FB043D9ED" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SupplementalBalanceSheetDisclosuresTextBlock_790FF0A98EDF354218AC4A6D20BD7FEA_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalBalanceSheetDisclosuresTextBlock_790FF0A98EDF354218AC4A6D20BD7FEA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Balance Sheet Information </link:label>
<link:label id="lab_us-gaap_SupplementalBalanceSheetDisclosuresTextBlock_790FF0A98EDF354218AC4A6D20BD7FEA_label_en-US" xlink:label="lab_us-gaap_SupplementalBalanceSheetDisclosuresTextBlock_790FF0A98EDF354218AC4A6D20BD7FEA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Supplemental Balance Sheet Disclosures [Text Block] </link:label>
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<link:label id="lab_srt_ConsolidationItemsAxis_7C568430D7B6F6DFA373381025C4B735_label_en-US" xlink:label="lab_srt_ConsolidationItemsAxis_7C568430D7B6F6DFA373381025C4B735" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Axis] </link:label>
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<link:label id="lab_srt_ConsolidationItemsDomain_D838E34518804E06B375381025C4AD59_label_en-US" xlink:label="lab_srt_ConsolidationItemsDomain_D838E34518804E06B375381025C4AD59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Consolidation Items [Domain] </link:label>
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<link:label id="lab_us-gaap_OperatingSegmentsMember_FFE8423B71A99D0DD575381025C5EC35_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_FFE8423B71A99D0DD575381025C5EC35" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating segments </link:label>
<link:label id="lab_us-gaap_OperatingSegmentsMember_FFE8423B71A99D0DD575381025C5EC35_label_en-US" xlink:label="lab_us-gaap_OperatingSegmentsMember_FFE8423B71A99D0DD575381025C5EC35" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Segments [Member] </link:label>
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<link:label id="lab_us-gaap_IntersegmentEliminationMember_6C09B66EE3F8A249D170381025C51229_terseLabel_en-US" xlink:label="lab_us-gaap_IntersegmentEliminationMember_6C09B66EE3F8A249D170381025C51229" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Intersegment revenue </link:label>
<link:label id="lab_us-gaap_IntersegmentEliminationMember_6C09B66EE3F8A249D170381025C51229_label_en-US" xlink:label="lab_us-gaap_IntersegmentEliminationMember_6C09B66EE3F8A249D170381025C51229" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Intersegment Eliminations [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IntersegmentEliminationMember" xlink:label="loc_us-gaap_IntersegmentEliminationMember_6C09B66EE3F8A249D170381025C51229" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IntersegmentEliminationMember_6C09B66EE3F8A249D170381025C51229" xlink:to="lab_us-gaap_IntersegmentEliminationMember_6C09B66EE3F8A249D170381025C51229" xlink:type="arc"/>
<link:label id="lab_itw_CorporateAndReconcilingItemsMember_D4039D17978F28BB0807381025C5A6DF_terseLabel_en-US" xlink:label="lab_itw_CorporateAndReconcilingItemsMember_D4039D17978F28BB0807381025C5A6DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unallocated </link:label>
<link:label id="lab_itw_CorporateAndReconcilingItemsMember_D4039D17978F28BB0807381025C5A6DF_label_en-US" xlink:label="lab_itw_CorporateAndReconcilingItemsMember_D4039D17978F28BB0807381025C5A6DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate And Reconciling Items [Member] </link:label>
<link:label id="lab_itw_CorporateAndReconcilingItemsMember_D4039D17978F28BB0807381025C5A6DF_documentation_en-US" xlink:label="lab_itw_CorporateAndReconcilingItemsMember_D4039D17978F28BB0807381025C5A6DF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Corporate And Reconciling Items [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_CorporateAndReconcilingItemsMember" xlink:label="loc_itw_CorporateAndReconcilingItemsMember_D4039D17978F28BB0807381025C5A6DF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_CorporateAndReconcilingItemsMember_D4039D17978F28BB0807381025C5A6DF" xlink:to="lab_itw_CorporateAndReconcilingItemsMember_D4039D17978F28BB0807381025C5A6DF" xlink:type="arc"/>
<link:label id="lab_us-gaap_CorporateNonSegmentMember_E7F6077AD15AF56CC8A4381025C5DB37_terseLabel_en-US" xlink:label="lab_us-gaap_CorporateNonSegmentMember_E7F6077AD15AF56CC8A4381025C5DB37" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Corporate </link:label>
<link:label id="lab_us-gaap_CorporateNonSegmentMember_E7F6077AD15AF56CC8A4381025C5DB37_label_en-US" xlink:label="lab_us-gaap_CorporateNonSegmentMember_E7F6077AD15AF56CC8A4381025C5DB37" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate, Non-Segment [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:label="loc_us-gaap_CorporateNonSegmentMember_E7F6077AD15AF56CC8A4381025C5DB37" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CorporateNonSegmentMember_E7F6077AD15AF56CC8A4381025C5DB37" xlink:to="lab_us-gaap_CorporateNonSegmentMember_E7F6077AD15AF56CC8A4381025C5DB37" xlink:type="arc"/>
<link:label id="lab_itw_FoodEquipmentSegmentMember_AF193EEA74A2101287A2381025C6E7E9_terseLabel_en-US" xlink:label="lab_itw_FoodEquipmentSegmentMember_AF193EEA74A2101287A2381025C6E7E9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Food Equipment </link:label>
<link:label id="lab_itw_FoodEquipmentSegmentMember_AF193EEA74A2101287A2381025C6E7E9_label_en-US" xlink:label="lab_itw_FoodEquipmentSegmentMember_AF193EEA74A2101287A2381025C6E7E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Food Equipment Segment [Member] </link:label>
<link:label id="lab_itw_FoodEquipmentSegmentMember_AF193EEA74A2101287A2381025C6E7E9_documentation_en-US" xlink:label="lab_itw_FoodEquipmentSegmentMember_AF193EEA74A2101287A2381025C6E7E9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Food equipment. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_FoodEquipmentSegmentMember" xlink:label="loc_itw_FoodEquipmentSegmentMember_AF193EEA74A2101287A2381025C6E7E9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_FoodEquipmentSegmentMember_AF193EEA74A2101287A2381025C6E7E9" xlink:to="lab_itw_FoodEquipmentSegmentMember_AF193EEA74A2101287A2381025C6E7E9" xlink:type="arc"/>
<link:label id="lab_itw_PolymersAndFluidsMember_CCEE0AD49FA061AB6E58381025C7A1CE_verboseLabel_en-US" xlink:label="lab_itw_PolymersAndFluidsMember_CCEE0AD49FA061AB6E58381025C7A1CE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Polymers & Fluids </link:label>
<link:label id="lab_itw_PolymersAndFluidsMember_CCEE0AD49FA061AB6E58381025C7A1CE_label_en-US" xlink:label="lab_itw_PolymersAndFluidsMember_CCEE0AD49FA061AB6E58381025C7A1CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Polymers and Fluids [Member] </link:label>
<link:label id="lab_itw_PolymersAndFluidsMember_CCEE0AD49FA061AB6E58381025C7A1CE_documentation_en-US" xlink:label="lab_itw_PolymersAndFluidsMember_CCEE0AD49FA061AB6E58381025C7A1CE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Polymers and fluids. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_PolymersAndFluidsMember" xlink:label="loc_itw_PolymersAndFluidsMember_CCEE0AD49FA061AB6E58381025C7A1CE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_PolymersAndFluidsMember_CCEE0AD49FA061AB6E58381025C7A1CE" xlink:to="lab_itw_PolymersAndFluidsMember_CCEE0AD49FA061AB6E58381025C7A1CE" xlink:type="arc"/>
<link:label id="lab_itw_ConstructionProductsSegmentMember_250A44E91D148D3F0AC5381025C71308_terseLabel_en-US" xlink:label="lab_itw_ConstructionProductsSegmentMember_250A44E91D148D3F0AC5381025C71308" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Construction Products </link:label>
<link:label id="lab_itw_ConstructionProductsSegmentMember_250A44E91D148D3F0AC5381025C71308_label_en-US" xlink:label="lab_itw_ConstructionProductsSegmentMember_250A44E91D148D3F0AC5381025C71308" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Construction Products Segment [Member] </link:label>
<link:label id="lab_itw_ConstructionProductsSegmentMember_250A44E91D148D3F0AC5381025C71308_documentation_en-US" xlink:label="lab_itw_ConstructionProductsSegmentMember_250A44E91D148D3F0AC5381025C71308" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Construction products. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_ConstructionProductsSegmentMember" xlink:label="loc_itw_ConstructionProductsSegmentMember_250A44E91D148D3F0AC5381025C71308" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_ConstructionProductsSegmentMember_250A44E91D148D3F0AC5381025C71308" xlink:to="lab_itw_ConstructionProductsSegmentMember_250A44E91D148D3F0AC5381025C71308" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_4C26513C3472ACCB4E8A381ECDA21A99_verboseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_4C26513C3472ACCB4E8A381ECDA21A99" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Operating revenue </link:label>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_4C26513C3472ACCB4E8A381ECDA21A99_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_4C26513C3472ACCB4E8A381ECDA21A99" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue from Contract with Customer, Excluding Assessed Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_4C26513C3472ACCB4E8A381ECDA21A99" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_4C26513C3472ACCB4E8A381ECDA21A99" xlink:to="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_4C26513C3472ACCB4E8A381ECDA21A99" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingIncomeLoss_E78057DA5D7E000BC056381025C8C7EC_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_E78057DA5D7E000BC056381025C8C7EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating income </link:label>
<link:label id="lab_us-gaap_OperatingIncomeLoss_E78057DA5D7E000BC056381025C8C7EC_label_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_E78057DA5D7E000BC056381025C8C7EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Income (Loss) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_E78057DA5D7E000BC056381025C8C7EC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingIncomeLoss_E78057DA5D7E000BC056381025C8C7EC" xlink:to="lab_us-gaap_OperatingIncomeLoss_E78057DA5D7E000BC056381025C8C7EC" xlink:type="arc"/>
<link:label id="lab_itw_DepreciationAndAmortizationAndImpairmentOfGoodwillAndIntangibleAssets_ED4A7CF3E4E9F0C9C476381025C87BE6_verboseLabel_en-US" xlink:label="lab_itw_DepreciationAndAmortizationAndImpairmentOfGoodwillAndIntangibleAssets_ED4A7CF3E4E9F0C9C476381025C87BE6" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Depreciation and amortization and impairment of intangible assets </link:label>
<link:label id="lab_itw_DepreciationAndAmortizationAndImpairmentOfGoodwillAndIntangibleAssets_ED4A7CF3E4E9F0C9C476381025C87BE6_label_en-US" xlink:label="lab_itw_DepreciationAndAmortizationAndImpairmentOfGoodwillAndIntangibleAssets_ED4A7CF3E4E9F0C9C476381025C87BE6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Depreciation and Amortization and Impairment of Goodwill and Intangible Assets </link:label>
<link:label id="lab_itw_DepreciationAndAmortizationAndImpairmentOfGoodwillAndIntangibleAssets_ED4A7CF3E4E9F0C9C476381025C87BE6_documentation_en-US" xlink:label="lab_itw_DepreciationAndAmortizationAndImpairmentOfGoodwillAndIntangibleAssets_ED4A7CF3E4E9F0C9C476381025C87BE6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Depreciation and amortization and impairment of goodwill and intangible assets. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_DepreciationAndAmortizationAndImpairmentOfGoodwillAndIntangibleAssets" xlink:label="loc_itw_DepreciationAndAmortizationAndImpairmentOfGoodwillAndIntangibleAssets_ED4A7CF3E4E9F0C9C476381025C87BE6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_DepreciationAndAmortizationAndImpairmentOfGoodwillAndIntangibleAssets_ED4A7CF3E4E9F0C9C476381025C87BE6" xlink:to="lab_itw_DepreciationAndAmortizationAndImpairmentOfGoodwillAndIntangibleAssets_ED4A7CF3E4E9F0C9C476381025C87BE6" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_66F366E4479F5946DF3E381025C8812F_verboseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_66F366E4479F5946DF3E381025C8812F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Plant and equipment additions </link:label>
<link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_66F366E4479F5946DF3E381025C8812F_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_66F366E4479F5946DF3E381025C8812F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Property, Plant, and Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_66F366E4479F5946DF3E381025C8812F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_66F366E4479F5946DF3E381025C8812F" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_66F366E4479F5946DF3E381025C8812F" xlink:type="arc"/>
<link:label id="lab_us-gaap_Assets_82E6EC4B7D343B6767D2381025C863E9_terseLabel_en-US" xlink:label="lab_us-gaap_Assets_82E6EC4B7D343B6767D2381025C863E9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Identifiable assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_82E6EC4B7D343B6767D2381025C863E9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_82E6EC4B7D343B6767D2381025C863E9" xlink:to="lab_us-gaap_Assets_82E6EC4B7D343B6767D2381025C863E9" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_D26E26FE27F0D2EE2A08F7950876A73A_verboseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_D26E26FE27F0D2EE2A08F7950876A73A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Schedule of Other Income (Expense) </link:label>
<link:label id="lab_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_D26E26FE27F0D2EE2A08F7950876A73A_label_en-US" xlink:label="lab_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_D26E26FE27F0D2EE2A08F7950876A73A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Schedule of Other Nonoperating Income (Expense) [Table Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_D26E26FE27F0D2EE2A08F7950876A73A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_D26E26FE27F0D2EE2A08F7950876A73A" xlink:to="lab_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_D26E26FE27F0D2EE2A08F7950876A73A" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_898DAACDBED9A50B8B154A6D20028B7A_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_898DAACDBED9A50B8B154A6D20028B7A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Revenue </link:label>
<link:label id="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_898DAACDBED9A50B8B154A6D20028B7A_label_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerTextBlock_898DAACDBED9A50B8B154A6D20028B7A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenue from Contract with Customer [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerTextBlock" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerTextBlock_898DAACDBED9A50B8B154A6D20028B7A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StatementOfStockholdersEquityAbstract_4E039E80FA24F7C689CBF744983D6438_label_en-US" xlink:label="lab_us-gaap_StatementOfStockholdersEquityAbstract_4E039E80FA24F7C689CBF744983D6438" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Stockholders' Equity [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="loc_us-gaap_StatementOfStockholdersEquityAbstract_4E039E80FA24F7C689CBF744983D6438" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CommonStockDividendsPerShareDeclared_4BF2F42784293FD34F10F744983D7EDC_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareDeclared_4BF2F42784293FD34F10F744983D7EDC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Dividends declared (in dollars per share) </link:label>
<link:label id="lab_us-gaap_CommonStockDividendsPerShareDeclared_4BF2F42784293FD34F10F744983D7EDC_label_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareDeclared_4BF2F42784293FD34F10F744983D7EDC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Dividends, Per Share, Declared </link:label>
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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_427B58AC6C262E9B360A222FCBCCA47E" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_427B58AC6C262E9B360A222FCBCCA47E" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_DECF4AA0E1126152B371222FCBCCBC40_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_DECF4AA0E1126152B371222FCBCCBC40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_DECF4AA0E1126152B371222FCBCCBC40_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_DECF4AA0E1126152B371222FCBCCBC40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due in Two Years </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_DECF4AA0E1126152B371222FCBCCBC40" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_DECF4AA0E1126152B371222FCBCCBC40" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_DECF4AA0E1126152B371222FCBCCBC40" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_F1C1C1E4D41D4A238CD0222FCBCC5677_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_F1C1C1E4D41D4A238CD0222FCBCC5677" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2021 </link:label>
<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_F1C1C1E4D41D4A238CD0222FCBCC5677_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_F1C1C1E4D41D4A238CD0222FCBCC5677" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due in Three Years </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_F1C1C1E4D41D4A238CD0222FCBCC5677" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_F1C1C1E4D41D4A238CD0222FCBCC5677" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_F1C1C1E4D41D4A238CD0222FCBCC5677" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_C62FFF04E2A579F1C607222FCBCD41ED_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_C62FFF04E2A579F1C607222FCBCD41ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_C62FFF04E2A579F1C607222FCBCD41ED_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_C62FFF04E2A579F1C607222FCBCD41ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due in Four Years </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_C62FFF04E2A579F1C607222FCBCD41ED" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_C62FFF04E2A579F1C607222FCBCD41ED" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_C62FFF04E2A579F1C607222FCBCD41ED" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_C29E9216EA9B5FD6FB8E222FCBCDE8B9_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_C29E9216EA9B5FD6FB8E222FCBCDE8B9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2023 </link:label>
<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_C29E9216EA9B5FD6FB8E222FCBCDE8B9_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_C29E9216EA9B5FD6FB8E222FCBCDE8B9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due in Five Years </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_C29E9216EA9B5FD6FB8E222FCBCDE8B9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_C29E9216EA9B5FD6FB8E222FCBCDE8B9" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_C29E9216EA9B5FD6FB8E222FCBCDE8B9" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_94CA0A450B293B7FEE7D222FCBCDEAD6_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_94CA0A450B293B7FEE7D222FCBCDEAD6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2024 and future years </link:label>
<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_94CA0A450B293B7FEE7D222FCBCDEAD6_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_94CA0A450B293B7FEE7D222FCBCDEAD6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments, Due Thereafter </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_94CA0A450B293B7FEE7D222FCBCDEAD6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_94CA0A450B293B7FEE7D222FCBCDEAD6" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_94CA0A450B293B7FEE7D222FCBCDEAD6" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_3C0E5C54DA529EECFBFC222FCBCD0233_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_3C0E5C54DA529EECFBFC222FCBCD0233" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total future minimum lease payments </link:label>
<link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_3C0E5C54DA529EECFBFC222FCBCD0233_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_3C0E5C54DA529EECFBFC222FCBCD0233" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Leases, Future Minimum Payments Due </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_3C0E5C54DA529EECFBFC222FCBCD0233" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_3C0E5C54DA529EECFBFC222FCBCD0233" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_3C0E5C54DA529EECFBFC222FCBCD0233" xlink:type="arc"/>
<link:label id="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8BBBBF2941FF95A0E15B222FCCC7A0CC_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8BBBBF2941FF95A0E15B222FCCC7A0CC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment [Table] </link:label>
<link:label id="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8BBBBF2941FF95A0E15B222FCCC7A0CC_label_en-US" xlink:label="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8BBBBF2941FF95A0E15B222FCCC7A0CC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8BBBBF2941FF95A0E15B222FCCC7A0CC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8BBBBF2941FF95A0E15B222FCCC7A0CC" xlink:to="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_8BBBBF2941FF95A0E15B222FCCC7A0CC" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_C1E103C0DECD5B7C75E9222FCCC82CFC_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_C1E103C0DECD5B7C75E9222FCCC82CFC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Type [Axis] </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_C1E103C0DECD5B7C75E9222FCCC82CFC_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_C1E103C0DECD5B7C75E9222FCCC82CFC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Type [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_C1E103C0DECD5B7C75E9222FCCC82CFC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_C1E103C0DECD5B7C75E9222FCCC82CFC" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_C1E103C0DECD5B7C75E9222FCCC82CFC" xlink:type="arc"/>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_919D03A3A87F21201E4A222FCCC90C7C_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_919D03A3A87F21201E4A222FCCC90C7C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Type [Domain] </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_919D03A3A87F21201E4A222FCCC90C7C_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_919D03A3A87F21201E4A222FCCC90C7C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Type [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_919D03A3A87F21201E4A222FCCC90C7C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_919D03A3A87F21201E4A222FCCC90C7C" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_919D03A3A87F21201E4A222FCCC90C7C" xlink:type="arc"/>
<link:label id="lab_us-gaap_BuildingAndBuildingImprovementsMember_B3FF0805F62EC8C8E905222FCCC9F57D_terseLabel_en-US" xlink:label="lab_us-gaap_BuildingAndBuildingImprovementsMember_B3FF0805F62EC8C8E905222FCCC9F57D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Buildings and Improvements </link:label>
<link:label id="lab_us-gaap_BuildingAndBuildingImprovementsMember_B3FF0805F62EC8C8E905222FCCC9F57D_label_en-US" xlink:label="lab_us-gaap_BuildingAndBuildingImprovementsMember_B3FF0805F62EC8C8E905222FCCC9F57D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Building and Building Improvements [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_B3FF0805F62EC8C8E905222FCCC9F57D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_MachineryAndEquipmentMember_486201D09593C327831F222FCCC9D32D_terseLabel_en-US" xlink:label="lab_us-gaap_MachineryAndEquipmentMember_486201D09593C327831F222FCCC9D32D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Machinery and Equipment </link:label>
<link:label id="lab_us-gaap_MachineryAndEquipmentMember_486201D09593C327831F222FCCC9D32D_label_en-US" xlink:label="lab_us-gaap_MachineryAndEquipmentMember_486201D09593C327831F222FCCC9D32D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Machinery and Equipment [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MachineryAndEquipmentMember" xlink:label="loc_us-gaap_MachineryAndEquipmentMember_486201D09593C327831F222FCCC9D32D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentLineItems_9D562CFFC240EC8E1D22222FCCC964C6_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentLineItems_9D562CFFC240EC8E1D22222FCCC964C6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment [Line Items] </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentLineItems_9D562CFFC240EC8E1D22222FCCC964C6_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentLineItems_9D562CFFC240EC8E1D22222FCCC964C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_9D562CFFC240EC8E1D22222FCCC964C6" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_8694BA339F0A1470B57E222FCCCA3255_verboseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_8694BA339F0A1470B57E222FCCCA3255" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Plant and equipment, useful life </link:label>
<link:label id="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_8694BA339F0A1470B57E222FCCCA3255_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_8694BA339F0A1470B57E222FCCCA3255" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Property, Plant and Equipment, Useful Life </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_8694BA339F0A1470B57E222FCCCA3255" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeStatementAbstract_2FFDD21D102E4461A4FF381028E70F73_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_2FFDD21D102E4461A4FF381028E70F73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Statement [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_2FFDD21D102E4461A4FF381028E70F73" xlink:type="locator"/>
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<link:label id="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7465B512C388F2819E3B381FB569F25E_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7465B512C388F2819E3B381FB569F25E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Revenue </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_7465B512C388F2819E3B381FB569F25E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_C2E22DE2ED4A867F2854381028E8755A_verboseLabel_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_C2E22DE2ED4A867F2854381028E8755A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cost of revenue </link:label>
<link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_C2E22DE2ED4A867F2854381028E8755A_label_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_C2E22DE2ED4A867F2854381028E8755A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cost of Goods and Services Sold </link:label>
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<link:label id="lab_itw_SellingAdministrativeAndResearchAndDevelopmentExpenses_9632298E79B2E3D7C01E381028E8D498_verboseLabel_en-US" xlink:label="lab_itw_SellingAdministrativeAndResearchAndDevelopmentExpenses_9632298E79B2E3D7C01E381028E8D498" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Selling, administrative, and research and development expenses </link:label>
<link:label id="lab_itw_SellingAdministrativeAndResearchAndDevelopmentExpenses_9632298E79B2E3D7C01E381028E8D498_label_en-US" xlink:label="lab_itw_SellingAdministrativeAndResearchAndDevelopmentExpenses_9632298E79B2E3D7C01E381028E8D498" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Selling Administrative and Research and Development Expenses </link:label>
<link:label id="lab_itw_SellingAdministrativeAndResearchAndDevelopmentExpenses_9632298E79B2E3D7C01E381028E8D498_documentation_en-US" xlink:label="lab_itw_SellingAdministrativeAndResearchAndDevelopmentExpenses_9632298E79B2E3D7C01E381028E8D498" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> The aggregate total costs related to selling a firm's product and services, as well as all other general, administrative, and research and development expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_SellingAdministrativeAndResearchAndDevelopmentExpenses" xlink:label="loc_itw_SellingAdministrativeAndResearchAndDevelopmentExpenses_9632298E79B2E3D7C01E381028E8D498" xlink:type="locator"/>
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<link:label id="lab_us-gaap_GainLossRelatedToLitigationSettlement_DC30C8584F48C191B8D9381028E82A85_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_GainLossRelatedToLitigationSettlement_DC30C8584F48C191B8D9381028E82A85" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Legal settlement (income) </link:label>
<link:label id="lab_us-gaap_GainLossRelatedToLitigationSettlement_DC30C8584F48C191B8D9381028E82A85_label_en-US" xlink:label="lab_us-gaap_GainLossRelatedToLitigationSettlement_DC30C8584F48C191B8D9381028E82A85" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gain (Loss) Related to Litigation Settlement </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossRelatedToLitigationSettlement" xlink:label="loc_us-gaap_GainLossRelatedToLitigationSettlement_DC30C8584F48C191B8D9381028E82A85" xlink:type="locator"/>
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<link:label id="lab_itw_AmortizationandImpairmentofIntangibleAssets_6DB9A7F1BF67CCC07A62381028E8C3C3_terseLabel_en-US" xlink:label="lab_itw_AmortizationandImpairmentofIntangibleAssets_6DB9A7F1BF67CCC07A62381028E8C3C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortization and impairment of intangible assets </link:label>
<link:label id="lab_itw_AmortizationandImpairmentofIntangibleAssets_6DB9A7F1BF67CCC07A62381028E8C3C3_label_en-US" xlink:label="lab_itw_AmortizationandImpairmentofIntangibleAssets_6DB9A7F1BF67CCC07A62381028E8C3C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Amortization and Impairment of Intangible Assets </link:label>
<link:label id="lab_itw_AmortizationandImpairmentofIntangibleAssets_6DB9A7F1BF67CCC07A62381028E8C3C3_documentation_en-US" xlink:label="lab_itw_AmortizationandImpairmentofIntangibleAssets_6DB9A7F1BF67CCC07A62381028E8C3C3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Amortization and Impairment of Intangible Assets </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_AmortizationandImpairmentofIntangibleAssets" xlink:label="loc_itw_AmortizationandImpairmentofIntangibleAssets_6DB9A7F1BF67CCC07A62381028E8C3C3" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingIncomeLoss_E091C6D3FB892ADA7713381028E83593_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingIncomeLoss_E091C6D3FB892ADA7713381028E83593" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Operating Income </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_E091C6D3FB892ADA7713381028E83593" xlink:type="locator"/>
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<link:label id="lab_us-gaap_InterestExpense_B523D3AE409933A30B90381028E800DA_negatedLabel_en-US" xlink:label="lab_us-gaap_InterestExpense_B523D3AE409933A30B90381028E800DA" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Interest expense </link:label>
<link:label id="lab_us-gaap_InterestExpense_B523D3AE409933A30B90381028E800DA_label_en-US" xlink:label="lab_us-gaap_InterestExpense_B523D3AE409933A30B90381028E800DA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Interest Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_B523D3AE409933A30B90381028E800DA" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OtherNonoperatingIncome_3523742C6EC79F7536C0381028E9EA54_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncome_3523742C6EC79F7536C0381028E9EA54" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other income (expense) </link:label>
<link:label id="lab_us-gaap_OtherNonoperatingIncome_3523742C6EC79F7536C0381028E9EA54_label_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncome_3523742C6EC79F7536C0381028E9EA54" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Nonoperating Income </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherNonoperatingIncome" xlink:label="loc_us-gaap_OtherNonoperatingIncome_3523742C6EC79F7536C0381028E9EA54" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_330025C2799659E8234C381028E99184_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_330025C2799659E8234C381028E99184" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Income Before Taxes </link:label>
<link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_330025C2799659E8234C381028E99184_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_330025C2799659E8234C381028E99184" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_330025C2799659E8234C381028E99184" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_439B9A43A96B04F67E65381028E958E9_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_439B9A43A96B04F67E65381028E958E9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Income taxes </link:label>
<link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_439B9A43A96B04F67E65381028E958E9_label_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_439B9A43A96B04F67E65381028E958E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Tax Expense (Benefit) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_439B9A43A96B04F67E65381028E958E9" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProfitLoss_E1E254FB610CC6F59B03381028E9706E_totalLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_E1E254FB610CC6F59B03381028E9706E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net Income </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_E1E254FB610CC6F59B03381028E9706E" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EarningsPerShareAbstract_902B538A0281F8BB126A381028E934D5_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract_902B538A0281F8BB126A381028E934D5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Net Income Per Share: </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_902B538A0281F8BB126A381028E934D5" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EarningsPerShareBasic_9EC809EE12DA25C50AC8381028E9004F_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasic_9EC809EE12DA25C50AC8381028E9004F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Basic (in dollars per share) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_9EC809EE12DA25C50AC8381028E9004F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EarningsPerShareDiluted_5D57DF95B2C3932A1FD4381028EA81C2_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareDiluted_5D57DF95B2C3932A1FD4381028EA81C2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Diluted (in dollars per share) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_5D57DF95B2C3932A1FD4381028EA81C2" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_5FB35A443DCBCC75245039BEBDD8CE67_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_5FB35A443DCBCC75245039BEBDD8CE67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Cash Flows [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_5FB35A443DCBCC75245039BEBDD8CE67" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_B0A1ACBACD19160DEC9E39BEBDDCFDCC_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_B0A1ACBACD19160DEC9E39BEBDDCFDCC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash Provided by (Used for) Operating Activities: </link:label>
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<link:label id="lab_us-gaap_ProfitLoss_23AD34BDCD5F293BA3F639BEBDE2F66D_verboseLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_23AD34BDCD5F293BA3F639BEBDE2F66D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Net income </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_23AD34BDCD5F293BA3F639BEBDE2F66D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1CEB4BAD4C89A050491539BEBDE33ABC_verboseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1CEB4BAD4C89A050491539BEBDE33ABC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Adjustments to reconcile net income to cash provided by operating activities: </link:label>
<link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1CEB4BAD4C89A050491539BEBDE33ABC_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1CEB4BAD4C89A050491539BEBDE33ABC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_1CEB4BAD4C89A050491539BEBDE33ABC" xlink:type="locator"/>
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<link:label id="lab_us-gaap_Depreciation_470581A79D91A0FC140039BEBDE3810D_verboseLabel_en-US" xlink:label="lab_us-gaap_Depreciation_470581A79D91A0FC140039BEBDE3810D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Depreciation </link:label>
<link:label id="lab_us-gaap_Depreciation_470581A79D91A0FC140039BEBDE3810D_label_en-US" xlink:label="lab_us-gaap_Depreciation_470581A79D91A0FC140039BEBDE3810D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Depreciation </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Depreciation" xlink:label="loc_us-gaap_Depreciation_470581A79D91A0FC140039BEBDE3810D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Depreciation_470581A79D91A0FC140039BEBDE3810D" xlink:to="lab_us-gaap_Depreciation_470581A79D91A0FC140039BEBDE3810D" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_D5843D0CA8CF34CA20D339BEBDE4B2F1_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_D5843D0CA8CF34CA20D339BEBDE4B2F1" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Change in deferred income taxes </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_D5843D0CA8CF34CA20D339BEBDE4B2F1_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_D5843D0CA8CF34CA20D339BEBDE4B2F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Deferred Income Taxes </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredIncomeTaxes" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes_D5843D0CA8CF34CA20D339BEBDE4B2F1" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProvisionForDoubtfulAccounts_EF7EAC9F8222EA292E0239BEBDE421EE_verboseLabel_en-US" xlink:label="lab_us-gaap_ProvisionForDoubtfulAccounts_EF7EAC9F8222EA292E0239BEBDE421EE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Provision for uncollectible accounts </link:label>
<link:label id="lab_us-gaap_ProvisionForDoubtfulAccounts_EF7EAC9F8222EA292E0239BEBDE421EE_label_en-US" xlink:label="lab_us-gaap_ProvisionForDoubtfulAccounts_EF7EAC9F8222EA292E0239BEBDE421EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounts Receivable, Credit Loss Expense (Reversal) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_EF7EAC9F8222EA292E0239BEBDE421EE" xlink:type="locator"/>
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<link:label id="lab_us-gaap_GainLossOnInvestments_6513866B06CF51B98B6139BEBDE45AAC_negatedLabel_en-US" xlink:label="lab_us-gaap_GainLossOnInvestments_6513866B06CF51B98B6139BEBDE45AAC" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> (Income) loss from investments </link:label>
<link:label id="lab_us-gaap_GainLossOnInvestments_6513866B06CF51B98B6139BEBDE45AAC_label_en-US" xlink:label="lab_us-gaap_GainLossOnInvestments_6513866B06CF51B98B6139BEBDE45AAC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gain (Loss) on Investments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnInvestments" xlink:label="loc_us-gaap_GainLossOnInvestments_6513866B06CF51B98B6139BEBDE45AAC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnInvestments_6513866B06CF51B98B6139BEBDE45AAC" xlink:to="lab_us-gaap_GainLossOnInvestments_6513866B06CF51B98B6139BEBDE45AAC" xlink:type="arc"/>
<link:label id="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_D8042B1D751695FA1C1A39BEBDE517F0_negatedLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_D8042B1D751695FA1C1A39BEBDE517F0" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> (Gain) loss on sale of plant and equipment </link:label>
<link:label id="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_D8042B1D751695FA1C1A39BEBDE517F0_label_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_D8042B1D751695FA1C1A39BEBDE517F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Gain (Loss) on Disposition of Property Plant Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_D8042B1D751695FA1C1A39BEBDE517F0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_D8042B1D751695FA1C1A39BEBDE517F0" xlink:to="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_D8042B1D751695FA1C1A39BEBDE517F0" xlink:type="arc"/>
<link:label id="lab_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_BEA1676F23B0069BA39239BEBDE5F2C7_negatedLabel_en-US" xlink:label="lab_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_BEA1676F23B0069BA39239BEBDE5F2C7" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> (Gain) loss on sale of operations and affiliates </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal" xlink:label="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_BEA1676F23B0069BA39239BEBDE5F2C7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_BEA1676F23B0069BA39239BEBDE5F2C7" xlink:to="lab_us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal_BEA1676F23B0069BA39239BEBDE5F2C7" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensation_2FE0449EF4635310639839BEBDE537A1_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_2FE0449EF4635310639839BEBDE537A1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Stock-based compensation expense </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensation_2FE0449EF4635310639839BEBDE537A1_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensation_2FE0449EF4635310639839BEBDE537A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Payment Arrangement, Noncash Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_2FE0449EF4635310639839BEBDE537A1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensation_2FE0449EF4635310639839BEBDE537A1" xlink:to="lab_us-gaap_ShareBasedCompensation_2FE0449EF4635310639839BEBDE537A1" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_779EF511DBAF0621F7DC39BEBDE50597_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_779EF511DBAF0621F7DC39BEBDE50597" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other non-cash items, net </link:label>
<link:label id="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_779EF511DBAF0621F7DC39BEBDE50597_label_en-US" xlink:label="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_779EF511DBAF0621F7DC39BEBDE50597" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Operating Activities, Cash Flow Statement </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherOperatingActivitiesCashFlowStatement" xlink:label="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_779EF511DBAF0621F7DC39BEBDE50597" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherOperatingActivitiesCashFlowStatement_779EF511DBAF0621F7DC39BEBDE50597" xlink:to="lab_us-gaap_OtherOperatingActivitiesCashFlowStatement_779EF511DBAF0621F7DC39BEBDE50597" xlink:type="arc"/>
<link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_F1D0873E6E3A926C8A6939BEBDE67EB2_verboseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_F1D0873E6E3A926C8A6939BEBDE67EB2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Change in assets and liabilities, net of acquisitions and divestitures: </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_F1D0873E6E3A926C8A6939BEBDE67EB2_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_F1D0873E6E3A926C8A6939BEBDE67EB2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Operating Capital [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_F1D0873E6E3A926C8A6939BEBDE67EB2" xlink:type="locator"/>
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<link:label id="lab_itw_IncreaseDecreaseInAbstract_9392FDF6D3C729868C2839BEBDE6B2C9_verboseLabel_en-US" xlink:label="lab_itw_IncreaseDecreaseInAbstract_9392FDF6D3C729868C2839BEBDE6B2C9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> (Increase) decrease in— </link:label>
<link:label id="lab_itw_IncreaseDecreaseInAbstract_9392FDF6D3C729868C2839BEBDE6B2C9_label_en-US" xlink:label="lab_itw_IncreaseDecreaseInAbstract_9392FDF6D3C729868C2839BEBDE6B2C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase Decrease in [Abstract] </link:label>
<link:label id="lab_itw_IncreaseDecreaseInAbstract_9392FDF6D3C729868C2839BEBDE6B2C9_documentation_en-US" xlink:label="lab_itw_IncreaseDecreaseInAbstract_9392FDF6D3C729868C2839BEBDE6B2C9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Increase decrease in. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_IncreaseDecreaseInAbstract" xlink:label="loc_itw_IncreaseDecreaseInAbstract_9392FDF6D3C729868C2839BEBDE6B2C9" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncreaseDecreaseInReceivables_8674F446C3ADFD36F43439BEBDE6B70D_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInReceivables_8674F446C3ADFD36F43439BEBDE6B70D" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Trade receivables </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInReceivables_8674F446C3ADFD36F43439BEBDE6B70D_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInReceivables_8674F446C3ADFD36F43439BEBDE6B70D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Receivables </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInReceivables" xlink:label="loc_us-gaap_IncreaseDecreaseInReceivables_8674F446C3ADFD36F43439BEBDE6B70D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncreaseDecreaseInInventories_D0780B1B9EBC56A40A6139BEBDE72F3F_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInInventories_D0780B1B9EBC56A40A6139BEBDE72F3F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Inventories </link:label>
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<link:label id="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_93F8CFA80FC143B0FA6D39BEBDE7FEA9_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_93F8CFA80FC143B0FA6D39BEBDE7FEA9" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Prepaid expenses and other assets </link:label>
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<link:label id="lab_itw_IncreaseDecreaseInItemsAbstract_C27BB8EEA76F3227F96439BEBDE7046D_label_en-US" xlink:label="lab_itw_IncreaseDecreaseInItemsAbstract_C27BB8EEA76F3227F96439BEBDE7046D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase Decrease in Items [Abstract] </link:label>
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<link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayableTrade_BC2781507D5136E7872139BEBDE72D36_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayableTrade_BC2781507D5136E7872139BEBDE72D36" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Accounts Payable, Trade </link:label>
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<link:label id="lab_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_50F2C6D4E5CB36AB58B839BEBDE89677_verboseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_50F2C6D4E5CB36AB58B839BEBDE89677" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Accrued expenses and other liabilities </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_50F2C6D4E5CB36AB58B839BEBDE89677_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_50F2C6D4E5CB36AB58B839BEBDE89677" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Other Accounts Payable and Accrued Liabilities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_50F2C6D4E5CB36AB58B839BEBDE89677" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_290EE70A58C5FE9D6D5639BEBDE8751A_verboseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_290EE70A58C5FE9D6D5639BEBDE8751A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Income taxes </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_290EE70A58C5FE9D6D5639BEBDE8751A_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_290EE70A58C5FE9D6D5639BEBDE8751A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Income Taxes Payable </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_290EE70A58C5FE9D6D5639BEBDE8751A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_17237619A2A8AE884AF039BEBDE897E6_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_17237619A2A8AE884AF039BEBDE897E6" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Other, net </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_17237619A2A8AE884AF039BEBDE897E6_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_17237619A2A8AE884AF039BEBDE897E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Other Operating Assets and Liabilities, Net </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_17237619A2A8AE884AF039BEBDE897E6" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_17237619A2A8AE884AF039BEBDE897E6" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_17237619A2A8AE884AF039BEBDE897E6" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_8C9A8CA2C87EC6AEBE5E39BEBDE9917D_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_8C9A8CA2C87EC6AEBE5E39BEBDE9917D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash provided by operating activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_8C9A8CA2C87EC6AEBE5E39BEBDE9917D_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_8C9A8CA2C87EC6AEBE5E39BEBDE9917D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Operating Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_8C9A8CA2C87EC6AEBE5E39BEBDE9917D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_8C9A8CA2C87EC6AEBE5E39BEBDE9917D" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_8C9A8CA2C87EC6AEBE5E39BEBDE9917D" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_7C20BCFB5B07F108BEB939BEBDE90C25_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_7C20BCFB5B07F108BEB939BEBDE90C25" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash Provided by (Used for) Investing Activities: </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_7C20BCFB5B07F108BEB939BEBDE90C25_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_7C20BCFB5B07F108BEB939BEBDE90C25" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_7C20BCFB5B07F108BEB939BEBDE90C25" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_7C20BCFB5B07F108BEB939BEBDE90C25" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_7C20BCFB5B07F108BEB939BEBDE90C25" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3192BC27D2D840E6749039BEBDE91A2D_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3192BC27D2D840E6749039BEBDE91A2D" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Acquisition of businesses (excluding cash and equivalents) </link:label>
<link:label id="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3192BC27D2D840E6749039BEBDE91A2D_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3192BC27D2D840E6749039BEBDE91A2D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments to Acquire Businesses, Net of Cash Acquired </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3192BC27D2D840E6749039BEBDE91A2D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3192BC27D2D840E6749039BEBDE91A2D" xlink:to="lab_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_3192BC27D2D840E6749039BEBDE91A2D" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_6E3745EEEE86EBA8047A39BEBDE925D8_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_6E3745EEEE86EBA8047A39BEBDE925D8" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Additions to plant and equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_6E3745EEEE86EBA8047A39BEBDE925D8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_6E3745EEEE86EBA8047A39BEBDE925D8" xlink:to="lab_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_6E3745EEEE86EBA8047A39BEBDE925D8" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_5EC7E878A3911C3CDCDC39BEBDEA25F8_verboseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_5EC7E878A3911C3CDCDC39BEBDEA25F8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from investments </link:label>
<link:label id="lab_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_5EC7E878A3911C3CDCDC39BEBDEA25F8_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_5EC7E878A3911C3CDCDC39BEBDEA25F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Sale, Maturity and Collection of Investments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments" xlink:label="loc_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_5EC7E878A3911C3CDCDC39BEBDEA25F8" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_D9E0E5B4C47F2528AA0439BEBDEA4881_verboseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_D9E0E5B4C47F2528AA0439BEBDEA4881" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from sale of plant and equipment </link:label>
<link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_D9E0E5B4C47F2528AA0439BEBDEA4881_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_D9E0E5B4C47F2528AA0439BEBDEA4881" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Sale of Property, Plant, and Equipment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_D9E0E5B4C47F2528AA0439BEBDEA4881" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates_32BACD4ADE125264C02B39BEBDEA95AB_verboseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates_32BACD4ADE125264C02B39BEBDEA95AB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from sale of operations and affiliates </link:label>
<link:label id="lab_us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates_32BACD4ADE125264C02B39BEBDEA95AB_label_en-US" xlink:label="lab_us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates_32BACD4ADE125264C02B39BEBDEA95AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Divestiture of Businesses and Interests in Affiliates </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates" xlink:label="loc_us-gaap_ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates_32BACD4ADE125264C02B39BEBDEA95AB" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_487D5A4A2FE5CDA73BF539BEBDEB0E14_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_487D5A4A2FE5CDA73BF539BEBDEB0E14" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Other, net </link:label>
<link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_487D5A4A2FE5CDA73BF539BEBDEB0E14_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_487D5A4A2FE5CDA73BF539BEBDEB0E14" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments for (Proceeds from) Other Investing Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_487D5A4A2FE5CDA73BF539BEBDEB0E14" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_90725835A2090781485439BEBDEB1377_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_90725835A2090781485439BEBDEB1377" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash provided by (used for) investing activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_90725835A2090781485439BEBDEB1377_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_90725835A2090781485439BEBDEB1377" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Investing Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_90725835A2090781485439BEBDEB1377" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_2CCAC1AB541E4A65843939BEBDEB8E11_verboseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_2CCAC1AB541E4A65843939BEBDEB8E11" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash Provided by (Used for) Financing Activities: </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_2CCAC1AB541E4A65843939BEBDEB8E11_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_2CCAC1AB541E4A65843939BEBDEB8E11" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_2CCAC1AB541E4A65843939BEBDEB8E11" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_7DBFC905B6A90C67B6D939BEBDEB8D20_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_7DBFC905B6A90C67B6D939BEBDEB8D20" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Cash dividends paid </link:label>
<link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_7DBFC905B6A90C67B6D939BEBDEB8D20_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_7DBFC905B6A90C67B6D939BEBDEB8D20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments of Ordinary Dividends, Common Stock </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_7DBFC905B6A90C67B6D939BEBDEB8D20" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfDividendsCommonStock_7DBFC905B6A90C67B6D939BEBDEB8D20" xlink:to="lab_us-gaap_PaymentsOfDividendsCommonStock_7DBFC905B6A90C67B6D939BEBDEB8D20" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_861B29CD797456A025E539BEBDECEA21_verboseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_861B29CD797456A025E539BEBDECEA21" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Issuance of common stock </link:label>
<link:label id="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_861B29CD797456A025E539BEBDECEA21_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_861B29CD797456A025E539BEBDECEA21" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Issuance of Common Stock </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_861B29CD797456A025E539BEBDECEA21" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_861B29CD797456A025E539BEBDECEA21" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_861B29CD797456A025E539BEBDECEA21" xlink:type="arc"/>
<link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_55023EC1FA850BD5C9B639BEBDEC400A_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_55023EC1FA850BD5C9B639BEBDEC400A" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Repurchases of common stock </link:label>
<link:label id="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_55023EC1FA850BD5C9B639BEBDEC400A_label_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_55023EC1FA850BD5C9B639BEBDEC400A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Payments for Repurchase of Common Stock </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_55023EC1FA850BD5C9B639BEBDEC400A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_55023EC1FA850BD5C9B639BEBDEC400A" xlink:to="lab_us-gaap_PaymentsForRepurchaseOfCommonStock_55023EC1FA850BD5C9B639BEBDEC400A" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess_97A437B8AB4DA4D6F12C39BEBDEC18A2_verboseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess_97A437B8AB4DA4D6F12C39BEBDEC18A2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Net proceeds from (repayments of) debt with original maturities of three months or less </link:label>
<link:label id="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess_97A437B8AB4DA4D6F12C39BEBDEC18A2_label_en-US" xlink:label="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess_97A437B8AB4DA4D6F12C39BEBDEC18A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from (Repayments of) Short-term Debt, Maturing in Three Months or Less </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess" xlink:label="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess_97A437B8AB4DA4D6F12C39BEBDEC18A2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess_97A437B8AB4DA4D6F12C39BEBDEC18A2" xlink:to="lab_us-gaap_ProceedsFromRepaymentsOfShortTermDebtMaturingInThreeMonthsOrLess_97A437B8AB4DA4D6F12C39BEBDEC18A2" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromDebtMaturingInMoreThanThreeMonths_F867AF32A18EBEFB9DBA39BEBDEC0817_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromDebtMaturingInMoreThanThreeMonths_F867AF32A18EBEFB9DBA39BEBDEC0817" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Proceeds from debt with original maturities of more than three months </link:label>
<link:label id="lab_us-gaap_ProceedsFromDebtMaturingInMoreThanThreeMonths_F867AF32A18EBEFB9DBA39BEBDEC0817_label_en-US" xlink:label="lab_us-gaap_ProceedsFromDebtMaturingInMoreThanThreeMonths_F867AF32A18EBEFB9DBA39BEBDEC0817" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from Debt, Maturing in More than Three Months </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromDebtMaturingInMoreThanThreeMonths" xlink:label="loc_us-gaap_ProceedsFromDebtMaturingInMoreThanThreeMonths_F867AF32A18EBEFB9DBA39BEBDEC0817" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromDebtMaturingInMoreThanThreeMonths_F867AF32A18EBEFB9DBA39BEBDEC0817" xlink:to="lab_us-gaap_ProceedsFromDebtMaturingInMoreThanThreeMonths_F867AF32A18EBEFB9DBA39BEBDEC0817" xlink:type="arc"/>
<link:label id="lab_us-gaap_RepaymentsOfDebtMaturingInMoreThanThreeMonths_C576E1A77BAB186A777E39BEBDED3216_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfDebtMaturingInMoreThanThreeMonths_C576E1A77BAB186A777E39BEBDED3216" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Repayments of debt with original maturities of more than three months </link:label>
<link:label id="lab_us-gaap_RepaymentsOfDebtMaturingInMoreThanThreeMonths_C576E1A77BAB186A777E39BEBDED3216_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfDebtMaturingInMoreThanThreeMonths_C576E1A77BAB186A777E39BEBDED3216" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Repayments of Debt, Maturing in More than Three Months </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepaymentsOfDebtMaturingInMoreThanThreeMonths" xlink:label="loc_us-gaap_RepaymentsOfDebtMaturingInMoreThanThreeMonths_C576E1A77BAB186A777E39BEBDED3216" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfDebtMaturingInMoreThanThreeMonths_C576E1A77BAB186A777E39BEBDED3216" xlink:to="lab_us-gaap_RepaymentsOfDebtMaturingInMoreThanThreeMonths_C576E1A77BAB186A777E39BEBDED3216" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_8D04871B5BEEEA63626E39BEBDEDE693_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_8D04871B5BEEEA63626E39BEBDEDE693" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other, net </link:label>
<link:label id="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_8D04871B5BEEEA63626E39BEBDEDE693_label_en-US" xlink:label="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_8D04871B5BEEEA63626E39BEBDEDE693" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Proceeds from (Payments for) Other Financing Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_8D04871B5BEEEA63626E39BEBDEDE693" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_8D04871B5BEEEA63626E39BEBDEDE693" xlink:to="lab_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_8D04871B5BEEEA63626E39BEBDEDE693" xlink:type="arc"/>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_5D59DA39FA6E42A47A1F39BEBDEDE193_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_5D59DA39FA6E42A47A1F39BEBDEDE193" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Net cash provided by (used for) financing activities </link:label>
<link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_5D59DA39FA6E42A47A1F39BEBDEDE193_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_5D59DA39FA6E42A47A1F39BEBDEDE193" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Net Cash Provided by (Used in) Financing Activities </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_5D59DA39FA6E42A47A1F39BEBDEDE193" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_5D59DA39FA6E42A47A1F39BEBDEDE193" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_5D59DA39FA6E42A47A1F39BEBDEDE193" xlink:type="arc"/>
<link:label id="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_553D4A739E54C0E5F7CE39BEBDED30ED_verboseLabel_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_553D4A739E54C0E5F7CE39BEBDED30ED" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Effect of Exchange Rate Changes on Cash and Equivalents </link:label>
<link:label id="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_553D4A739E54C0E5F7CE39BEBDED30ED_label_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_553D4A739E54C0E5F7CE39BEBDED30ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_553D4A739E54C0E5F7CE39BEBDED30ED" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_553D4A739E54C0E5F7CE39BEBDED30ED" xlink:to="lab_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_553D4A739E54C0E5F7CE39BEBDED30ED" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseAbstract_BE6B5E760AFD0AE23BD039BEBDEED9DD_verboseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseAbstract_BE6B5E760AFD0AE23BD039BEBDEED9DD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Cash and Equivalents: </link:label>
<link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseAbstract_BE6B5E760AFD0AE23BD039BEBDEED9DD_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseAbstract_BE6B5E760AFD0AE23BD039BEBDEED9DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash and Cash Equivalents, Period Increase (Decrease) [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseAbstract" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseAbstract_BE6B5E760AFD0AE23BD039BEBDEED9DD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseAbstract_BE6B5E760AFD0AE23BD039BEBDEED9DD" xlink:to="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseAbstract_BE6B5E760AFD0AE23BD039BEBDEED9DD" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_A732F26FAA7E2DE6F60739BEBDEEFD2C_totalLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_A732F26FAA7E2DE6F60739BEBDEEFD2C" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Increase (decrease) during the year </link:label>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_A732F26FAA7E2DE6F60739BEBDEEFD2C_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_A732F26FAA7E2DE6F60739BEBDEEFD2C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_A732F26FAA7E2DE6F60739BEBDEEFD2C" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CF7B7247BACBBBDDD50D39BEBDEECFD3_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CF7B7247BACBBBDDD50D39BEBDEECFD3" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Beginning of year </link:label>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CF7B7247BACBBBDDD50D39BEBDEECFD3_label_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CF7B7247BACBBBDDD50D39BEBDEECFD3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CF7B7247BACBBBDDD50D39BEBDEECFD3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CF7B7247BACBBBDDD50D39BEBDEECFD3" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CF7B7247BACBBBDDD50D39BEBDEECFD3" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CB7C8D9C4BF3DF1DC19F39BEBDEFBE26_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CB7C8D9C4BF3DF1DC19F39BEBDEFBE26" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> End of year </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CB7C8D9C4BF3DF1DC19F39BEBDEFBE26" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CB7C8D9C4BF3DF1DC19F39BEBDEFBE26" xlink:to="lab_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_CB7C8D9C4BF3DF1DC19F39BEBDEFBE26" xlink:type="arc"/>
<link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_3188FA5AB06182B8A5A139BEBDEF5065_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_3188FA5AB06182B8A5A139BEBDEF5065" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Supplementary Cash Flow Information: </link:label>
<link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_3188FA5AB06182B8A5A139BEBDEF5065_label_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_3188FA5AB06182B8A5A139BEBDEF5065" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Supplemental Cash Flow Information [Abstract] </link:label>
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<link:label id="lab_itw_CanadaAndMexicoMember_2923E9A0C5452C1FEA4639E86A798F46_verboseLabel_en-US" xlink:label="lab_itw_CanadaAndMexicoMember_2923E9A0C5452C1FEA4639E86A798F46" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Canada/Mexico </link:label>
<link:label id="lab_itw_CanadaAndMexicoMember_2923E9A0C5452C1FEA4639E86A798F46_label_en-US" xlink:label="lab_itw_CanadaAndMexicoMember_2923E9A0C5452C1FEA4639E86A798F46" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Canada And Mexico [Member] </link:label>
<link:label id="lab_itw_CanadaAndMexicoMember_2923E9A0C5452C1FEA4639E86A798F46_documentation_en-US" xlink:label="lab_itw_CanadaAndMexicoMember_2923E9A0C5452C1FEA4639E86A798F46" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Canada And Mexico [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_CanadaAndMexicoMember" xlink:label="loc_itw_CanadaAndMexicoMember_2923E9A0C5452C1FEA4639E86A798F46" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_CanadaAndMexicoMember_2923E9A0C5452C1FEA4639E86A798F46" xlink:to="lab_itw_CanadaAndMexicoMember_2923E9A0C5452C1FEA4639E86A798F46" xlink:type="arc"/>
<link:label id="lab_srt_NorthAmericaMember_D7B5206A7225106A0F8F39BF38BA8026_verboseLabel_en-US" xlink:label="lab_srt_NorthAmericaMember_D7B5206A7225106A0F8F39BF38BA8026" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Total North America </link:label>
<link:label id="lab_srt_NorthAmericaMember_D7B5206A7225106A0F8F39BF38BA8026_label_en-US" xlink:label="lab_srt_NorthAmericaMember_D7B5206A7225106A0F8F39BF38BA8026" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> North America [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_NorthAmericaMember" xlink:label="loc_srt_NorthAmericaMember_D7B5206A7225106A0F8F39BF38BA8026" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EMEAMember_23CE13F0D73DF410841039BF38BA7570_verboseLabel_en-US" xlink:label="lab_us-gaap_EMEAMember_23CE13F0D73DF410841039BF38BA7570" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Europe, Middle East and Africa </link:label>
<link:label id="lab_us-gaap_EMEAMember_23CE13F0D73DF410841039BF38BA7570_label_en-US" xlink:label="lab_us-gaap_EMEAMember_23CE13F0D73DF410841039BF38BA7570" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> EMEA [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EMEAMember" xlink:label="loc_us-gaap_EMEAMember_23CE13F0D73DF410841039BF38BA7570" xlink:type="locator"/>
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<link:label id="lab_srt_AsiaPacificMember_943D3BEE4BAB02AB9FA839BF38BAF55E_verboseLabel_en-US" xlink:label="lab_srt_AsiaPacificMember_943D3BEE4BAB02AB9FA839BF38BAF55E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Asia Pacific </link:label>
<link:label id="lab_srt_AsiaPacificMember_943D3BEE4BAB02AB9FA839BF38BAF55E_label_en-US" xlink:label="lab_srt_AsiaPacificMember_943D3BEE4BAB02AB9FA839BF38BAF55E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Asia Pacific [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_AsiaPacificMember" xlink:label="loc_srt_AsiaPacificMember_943D3BEE4BAB02AB9FA839BF38BAF55E" xlink:type="locator"/>
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<link:label id="lab_srt_SouthAmericaMember_132F34E7BA7B71280A1539BF38BBF5FD_verboseLabel_en-US" xlink:label="lab_srt_SouthAmericaMember_132F34E7BA7B71280A1539BF38BBF5FD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> South America </link:label>
<link:label id="lab_srt_SouthAmericaMember_132F34E7BA7B71280A1539BF38BBF5FD_label_en-US" xlink:label="lab_srt_SouthAmericaMember_132F34E7BA7B71280A1539BF38BBF5FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> South America [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/srt/2019/elts/srt-2019-01-31.xsd#srt_SouthAmericaMember" xlink:label="loc_srt_SouthAmericaMember_132F34E7BA7B71280A1539BF38BBF5FD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_SouthAmericaMember_132F34E7BA7B71280A1539BF38BBF5FD" xlink:to="lab_srt_SouthAmericaMember_132F34E7BA7B71280A1539BF38BBF5FD" xlink:type="arc"/>
<link:label id="lab_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_F131424C5E64F6E0092839BF38BBFC82_terseLabel_en-US" xlink:label="lab_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_F131424C5E64F6E0092839BF38BBFC82" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Revenues from External Customers and Long-Lived Assets [Line Items] </link:label>
<link:label id="lab_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_F131424C5E64F6E0092839BF38BBFC82_label_en-US" xlink:label="lab_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_F131424C5E64F6E0092839BF38BBFC82" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Revenues from External Customers and Long-Lived Assets [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems" xlink:label="loc_us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems_F131424C5E64F6E0092839BF38BBFC82" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SegmentsGeographicalAreasAbstract_FA1494E452A4910A344B39BF38BBA9ED_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentsGeographicalAreasAbstract_FA1494E452A4910A344B39BF38BBA9ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Revenue by Geographic Region: </link:label>
<link:label id="lab_us-gaap_SegmentsGeographicalAreasAbstract_FA1494E452A4910A344B39BF38BBA9ED_label_en-US" xlink:label="lab_us-gaap_SegmentsGeographicalAreasAbstract_FA1494E452A4910A344B39BF38BBA9ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Segments, Geographical Areas [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SegmentsGeographicalAreasAbstract" xlink:label="loc_us-gaap_SegmentsGeographicalAreasAbstract_FA1494E452A4910A344B39BF38BBA9ED" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_7A2B682F5CDF0DA40CA64A6D1F3AF0DB_verboseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_7A2B682F5CDF0DA40CA64A6D1F3AF0DB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity </link:label>
<link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_7A2B682F5CDF0DA40CA64A6D1F3AF0DB_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_7A2B682F5CDF0DA40CA64A6D1F3AF0DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Stockholders' Equity Note Disclosure [Text Block] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_7A2B682F5CDF0DA40CA64A6D1F3AF0DB" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_6691A29AD29DA2C0391038102664FC1B_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_6691A29AD29DA2C0391038102664FC1B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Change in benefit obligation: </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_6691A29AD29DA2C0391038102664FC1B_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_6691A29AD29DA2C0391038102664FC1B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:label="loc_us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward_6691A29AD29DA2C0391038102664FC1B" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanBenefitObligation_5FD019B7D853F684CE3638102665F392_periodStartLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanBenefitObligation_5FD019B7D853F684CE3638102665F392" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Benefit obligation at January 1 </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanBenefitObligation_5FD019B7D853F684CE3638102665F392_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanBenefitObligation_5FD019B7D853F684CE3638102665F392" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Benefit Obligation </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligation_5FD019B7D853F684CE3638102665F392" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_8FFDE29C03569943AD0838102665D885_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_8FFDE29C03569943AD0838102665D885" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Plan participants’ contributions </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_8FFDE29C03569943AD0838102665D885_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_8FFDE29C03569943AD0838102665D885" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Benefit Obligation, Contributions by Plan Participant </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant" xlink:label="loc_us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant_8FFDE29C03569943AD0838102665D885" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanPlanAmendments_B1D35D6FC9AD7DE7561238102665791F_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanPlanAmendments_B1D35D6FC9AD7DE7561238102665791F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amendments </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanPlanAmendments_B1D35D6FC9AD7DE7561238102665791F_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanPlanAmendments_B1D35D6FC9AD7DE7561238102665791F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Benefit Obligation, Increase (Decrease) for Plan Amendment </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAmendments" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAmendments_B1D35D6FC9AD7DE7561238102665791F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanActuarialGainLoss_44E8DE13CA0CBE3D8C1C381026661C23_negatedLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanActuarialGainLoss_44E8DE13CA0CBE3D8C1C381026661C23" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Actuarial (gain) loss </link:label>
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<link:label id="lab_itw_DefinedBenefitPlanBenefitObligationTransferToLiabilitiesHeldForSale_14181AFA29DB10E5A80A3810266641E0_negatedTerseLabel_en-US" xlink:label="lab_itw_DefinedBenefitPlanBenefitObligationTransferToLiabilitiesHeldForSale_14181AFA29DB10E5A80A3810266641E0" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Transfer to liabilities held for sale </link:label>
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<link:label id="lab_itw_DefinedBenefitPlanBenefitObligationTransferToLiabilitiesHeldForSale_14181AFA29DB10E5A80A3810266641E0_documentation_en-US" xlink:label="lab_itw_DefinedBenefitPlanBenefitObligationTransferToLiabilitiesHeldForSale_14181AFA29DB10E5A80A3810266641E0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan Benefit Obligation, Transfer To Liabilities Held For Sale </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_DefinedBenefitPlanBenefitObligationTransferToLiabilitiesHeldForSale" xlink:label="loc_itw_DefinedBenefitPlanBenefitObligationTransferToLiabilitiesHeldForSale_14181AFA29DB10E5A80A3810266641E0" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DebtInstrumentFaceAmount_3BE266ADD3AD2609F3F1381026277B45_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_3BE266ADD3AD2609F3F1381026277B45" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Face value of notes </link:label>
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<link:label id="lab_itw_FoodEquipmentSegmentMember_A5D64AD03BBC9FD2D5EC310FF38FD8B3_verboseLabel_en-US" xlink:label="lab_itw_FoodEquipmentSegmentMember_A5D64AD03BBC9FD2D5EC310FF38FD8B3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Food Equipment </link:label>
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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_FoodEquipmentSegmentMember_A5D64AD03BBC9FD2D5EC310FF38FD8B3" xlink:to="lab_itw_FoodEquipmentSegmentMember_A5D64AD03BBC9FD2D5EC310FF38FD8B3" xlink:type="arc"/>
<link:label id="lab_itw_PolymersAndFluidsSegmentMember_578333550D03B71A17DB310FF38F88CD_terseLabel_en-US" xlink:label="lab_itw_PolymersAndFluidsSegmentMember_578333550D03B71A17DB310FF38F88CD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Polymers & Fluids </link:label>
<link:label id="lab_itw_PolymersAndFluidsSegmentMember_578333550D03B71A17DB310FF38F88CD_label_en-US" xlink:label="lab_itw_PolymersAndFluidsSegmentMember_578333550D03B71A17DB310FF38F88CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Polymers and Fluids Segment [Member] </link:label>
<link:label id="lab_itw_PolymersAndFluidsSegmentMember_578333550D03B71A17DB310FF38F88CD_documentation_en-US" xlink:label="lab_itw_PolymersAndFluidsSegmentMember_578333550D03B71A17DB310FF38F88CD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Polymers and Fluids segment. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_PolymersAndFluidsSegmentMember" xlink:label="loc_itw_PolymersAndFluidsSegmentMember_578333550D03B71A17DB310FF38F88CD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_PolymersAndFluidsSegmentMember_578333550D03B71A17DB310FF38F88CD" xlink:to="lab_itw_PolymersAndFluidsSegmentMember_578333550D03B71A17DB310FF38F88CD" xlink:type="arc"/>
<link:label id="lab_itw_ConstructionProductsSegmentMember_288D5E2D51F9C3DA4438310FF38F8DCD_verboseLabel_en-US" xlink:label="lab_itw_ConstructionProductsSegmentMember_288D5E2D51F9C3DA4438310FF38F8DCD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Construction Products </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_ConstructionProductsSegmentMember" xlink:label="loc_itw_ConstructionProductsSegmentMember_288D5E2D51F9C3DA4438310FF38F8DCD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_ConstructionProductsSegmentMember_288D5E2D51F9C3DA4438310FF38F8DCD" xlink:to="lab_itw_ConstructionProductsSegmentMember_288D5E2D51F9C3DA4438310FF38F8DCD" xlink:type="arc"/>
<link:label id="lab_us-gaap_GoodwillLineItems_F5C3C0168EE565296CB8310FF390E05A_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_F5C3C0168EE565296CB8310FF390E05A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Goodwill [Line Items] </link:label>
<link:label id="lab_us-gaap_GoodwillLineItems_F5C3C0168EE565296CB8310FF390E05A_label_en-US" xlink:label="lab_us-gaap_GoodwillLineItems_F5C3C0168EE565296CB8310FF390E05A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_F5C3C0168EE565296CB8310FF390E05A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillLineItems_F5C3C0168EE565296CB8310FF390E05A" xlink:to="lab_us-gaap_GoodwillLineItems_F5C3C0168EE565296CB8310FF390E05A" xlink:type="arc"/>
<link:label id="lab_us-gaap_GoodwillRollForward_4B80C6492246F461C50D310FF3905F88_verboseLabel_en-US" xlink:label="lab_us-gaap_GoodwillRollForward_4B80C6492246F461C50D310FF3905F88" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Changes in the carrying amount of goodwill by segment </link:label>
<link:label id="lab_us-gaap_GoodwillRollForward_4B80C6492246F461C50D310FF3905F88_label_en-US" xlink:label="lab_us-gaap_GoodwillRollForward_4B80C6492246F461C50D310FF3905F88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill [Roll Forward] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillRollForward" xlink:label="loc_us-gaap_GoodwillRollForward_4B80C6492246F461C50D310FF3905F88" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillRollForward_4B80C6492246F461C50D310FF3905F88" xlink:to="lab_us-gaap_GoodwillRollForward_4B80C6492246F461C50D310FF3905F88" xlink:type="arc"/>
<link:label id="lab_us-gaap_Goodwill_AA7AE7993922D9331A0C310FF39095FD_periodStartLabel_en-US" xlink:label="lab_us-gaap_Goodwill_AA7AE7993922D9331A0C310FF39095FD" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Balance, beginning </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_AA7AE7993922D9331A0C310FF39095FD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_AA7AE7993922D9331A0C310FF39095FD" xlink:to="lab_us-gaap_Goodwill_AA7AE7993922D9331A0C310FF39095FD" xlink:type="arc"/>
<link:label id="lab_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_9A188D267BED4CE22A87310FF39052EE_verboseLabel_en-US" xlink:label="lab_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_9A188D267BED4CE22A87310FF39052EE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Foreign currency translation </link:label>
<link:label id="lab_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_9A188D267BED4CE22A87310FF39052EE_label_en-US" xlink:label="lab_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_9A188D267BED4CE22A87310FF39052EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill, Translation and Purchase Accounting Adjustments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments" xlink:label="loc_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_9A188D267BED4CE22A87310FF39052EE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_9A188D267BED4CE22A87310FF39052EE" xlink:to="lab_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_9A188D267BED4CE22A87310FF39052EE" xlink:type="arc"/>
<link:label id="lab_itw_GoodwillAcquiredDuringPeriodAndWrittenOffRelatedToSaleOfBusinessUnit_604170B9DD9E9BFD4FFF310FF3904667_terseLabel_en-US" xlink:label="lab_itw_GoodwillAcquiredDuringPeriodAndWrittenOffRelatedToSaleOfBusinessUnit_604170B9DD9E9BFD4FFF310FF3904667" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Acquisitions / (divestitures) </link:label>
<link:label id="lab_itw_GoodwillAcquiredDuringPeriodAndWrittenOffRelatedToSaleOfBusinessUnit_604170B9DD9E9BFD4FFF310FF3904667_label_en-US" xlink:label="lab_itw_GoodwillAcquiredDuringPeriodAndWrittenOffRelatedToSaleOfBusinessUnit_604170B9DD9E9BFD4FFF310FF3904667" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill, Acquired, During Period And Written Off Related To Sale Of Business Unit </link:label>
<link:label id="lab_itw_GoodwillAcquiredDuringPeriodAndWrittenOffRelatedToSaleOfBusinessUnit_604170B9DD9E9BFD4FFF310FF3904667_documentation_en-US" xlink:label="lab_itw_GoodwillAcquiredDuringPeriodAndWrittenOffRelatedToSaleOfBusinessUnit_604170B9DD9E9BFD4FFF310FF3904667" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Goodwill, Acquired, During Period And Written Off Related To Sale Of Business Unit </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_GoodwillAcquiredDuringPeriodAndWrittenOffRelatedToSaleOfBusinessUnit" xlink:label="loc_itw_GoodwillAcquiredDuringPeriodAndWrittenOffRelatedToSaleOfBusinessUnit_604170B9DD9E9BFD4FFF310FF3904667" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_GoodwillAcquiredDuringPeriodAndWrittenOffRelatedToSaleOfBusinessUnit_604170B9DD9E9BFD4FFF310FF3904667" xlink:to="lab_itw_GoodwillAcquiredDuringPeriodAndWrittenOffRelatedToSaleOfBusinessUnit_604170B9DD9E9BFD4FFF310FF3904667" xlink:type="arc"/>
<link:label id="lab_us-gaap_GoodwillTransfers_D67ABD46687DE0D74387310FF391EF51_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillTransfers_D67ABD46687DE0D74387310FF391EF51" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Transfer to assets held for sale </link:label>
<link:label id="lab_us-gaap_GoodwillTransfers_D67ABD46687DE0D74387310FF391EF51_label_en-US" xlink:label="lab_us-gaap_GoodwillTransfers_D67ABD46687DE0D74387310FF391EF51" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill, Transfers </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillTransfers" xlink:label="loc_us-gaap_GoodwillTransfers_D67ABD46687DE0D74387310FF391EF51" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillTransfers_D67ABD46687DE0D74387310FF391EF51" xlink:to="lab_us-gaap_GoodwillTransfers_D67ABD46687DE0D74387310FF391EF51" xlink:type="arc"/>
<link:label id="lab_us-gaap_Goodwill_38C50EB6D1A560799AF6310FF391B30D_periodEndLabel_en-US" xlink:label="lab_us-gaap_Goodwill_38C50EB6D1A560799AF6310FF391B30D" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Balance, ending </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_38C50EB6D1A560799AF6310FF391B30D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Goodwill_38C50EB6D1A560799AF6310FF391B30D" xlink:to="lab_us-gaap_Goodwill_38C50EB6D1A560799AF6310FF391B30D" xlink:type="arc"/>
<link:label id="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_BE18A66AE32542D55AA7310FF391C49B_terseLabel_en-US" xlink:label="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_BE18A66AE32542D55AA7310FF391C49B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cumulative goodwill impairment charges, December 31, 2019 </link:label>
<link:label id="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_BE18A66AE32542D55AA7310FF391C49B_label_en-US" xlink:label="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_BE18A66AE32542D55AA7310FF391C49B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Goodwill, Impaired, Accumulated Impairment Loss </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_BE18A66AE32542D55AA7310FF391C49B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_BE18A66AE32542D55AA7310FF391C49B" xlink:to="lab_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_BE18A66AE32542D55AA7310FF391C49B" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtCurrent_E473E1E80FB9EA416FF9FCA8293241E5_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtCurrent_E473E1E80FB9EA416FF9FCA8293241E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Current maturities of long-term debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtCurrent" xlink:label="loc_us-gaap_LongTermDebtCurrent_E473E1E80FB9EA416FF9FCA8293241E5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtCurrent_E473E1E80FB9EA416FF9FCA8293241E5" xlink:to="lab_us-gaap_LongTermDebtCurrent_E473E1E80FB9EA416FF9FCA8293241E5" xlink:type="arc"/>
<link:label id="lab_us-gaap_BankOverdrafts_97D1333BE0A9345EE3D4FCA82933E369_terseLabel_en-US" xlink:label="lab_us-gaap_BankOverdrafts_97D1333BE0A9345EE3D4FCA82933E369" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Bank overdrafts </link:label>
<link:label id="lab_us-gaap_BankOverdrafts_97D1333BE0A9345EE3D4FCA82933E369_label_en-US" xlink:label="lab_us-gaap_BankOverdrafts_97D1333BE0A9345EE3D4FCA82933E369" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Bank Overdrafts </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_BankOverdrafts" xlink:label="loc_us-gaap_BankOverdrafts_97D1333BE0A9345EE3D4FCA82933E369" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BankOverdrafts_97D1333BE0A9345EE3D4FCA82933E369" xlink:to="lab_us-gaap_BankOverdrafts_97D1333BE0A9345EE3D4FCA82933E369" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtCurrent_E163D9961589CF4DD99EFCA8293365A4_totalLabel_en-US" xlink:label="lab_us-gaap_DebtCurrent_E163D9961589CF4DD99EFCA8293365A4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total short-term debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtCurrent" xlink:label="loc_us-gaap_DebtCurrent_E163D9961589CF4DD99EFCA8293365A4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtCurrent_E163D9961589CF4DD99EFCA8293365A4" xlink:to="lab_us-gaap_DebtCurrent_E163D9961589CF4DD99EFCA8293365A4" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_BE9C19D8E3BEC88D0F641C14CF9654A8_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_BE9C19D8E3BEC88D0F641C14CF9654A8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock Options, Number of Shares </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_BE9C19D8E3BEC88D0F641C14CF9654A8_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_BE9C19D8E3BEC88D0F641C14CF9654A8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_BE9C19D8E3BEC88D0F641C14CF9654A8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_BE9C19D8E3BEC88D0F641C14CF9654A8" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_BE9C19D8E3BEC88D0F641C14CF9654A8" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_D8492A06459A3EFAD9D51C14CF965C0E_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_D8492A06459A3EFAD9D51C14CF965C0E" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Under option, January 1, 2019 (in shares) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_D8492A06459A3EFAD9D51C14CF965C0E_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_D8492A06459A3EFAD9D51C14CF965C0E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_D8492A06459A3EFAD9D51C14CF965C0E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_D8492A06459A3EFAD9D51C14CF965C0E" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_D8492A06459A3EFAD9D51C14CF965C0E" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_F674C2AC113D0F7F7E111C14CF97F297_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_F674C2AC113D0F7F7E111C14CF97F297" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Granted (in shares) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_F674C2AC113D0F7F7E111C14CF97F297_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_F674C2AC113D0F7F7E111C14CF97F297" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_F674C2AC113D0F7F7E111C14CF97F297" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_055274CC4B7B04A7D6551C14CF979A06_negatedLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_055274CC4B7B04A7D6551C14CF979A06" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Exercised (in shares) </link:label>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_1BAE7B0831F7E0F662631C14CF9795E0" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_840D5968A299417594091C14CF975E09_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_840D5968A299417594091C14CF975E09" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Under option, December 31, 2019 (in shares) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_840D5968A299417594091C14CF975E09" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_D583A3D91CF814C796D71C14CF97661F_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_D583A3D91CF814C796D71C14CF97661F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Exercisable, December 31, 2019 (in shares) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_D583A3D91CF814C796D71C14CF97661F_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_D583A3D91CF814C796D71C14CF97661F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_D583A3D91CF814C796D71C14CF97661F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_D583A3D91CF814C796D71C14CF97661F" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_D583A3D91CF814C796D71C14CF97661F" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_11E46AC9B0634B83900A1C14CF97928B_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_11E46AC9B0634B83900A1C14CF97928B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock Options, Weighted-Average Exercise Price </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_11E46AC9B0634B83900A1C14CF97928B_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_11E46AC9B0634B83900A1C14CF97928B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_11E46AC9B0634B83900A1C14CF97928B" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_3D4886DDC8172E44B4E51C14CF98FB85_periodStartLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_3D4886DDC8172E44B4E51C14CF98FB85" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US"> Under option, January 1, 2019 (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_3D4886DDC8172E44B4E51C14CF98FB85_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_3D4886DDC8172E44B4E51C14CF98FB85" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_3D4886DDC8172E44B4E51C14CF98FB85" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_3D4886DDC8172E44B4E51C14CF98FB85" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_3D4886DDC8172E44B4E51C14CF98FB85" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_DC33B131090A95B384471C14CF98C2BB_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_DC33B131090A95B384471C14CF98C2BB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Granted (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_DC33B131090A95B384471C14CF98C2BB_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_DC33B131090A95B384471C14CF98C2BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_DC33B131090A95B384471C14CF98C2BB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_DC33B131090A95B384471C14CF98C2BB" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_DC33B131090A95B384471C14CF98C2BB" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_368507B5ABB311E87C2A1C14CF98D7E2_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_368507B5ABB311E87C2A1C14CF98D7E2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Exercised (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_368507B5ABB311E87C2A1C14CF98D7E2_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_368507B5ABB311E87C2A1C14CF98D7E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_368507B5ABB311E87C2A1C14CF98D7E2" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_368507B5ABB311E87C2A1C14CF98D7E2" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_368507B5ABB311E87C2A1C14CF98D7E2" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_4C6E7054368E97487BE61C14CF986383_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_4C6E7054368E97487BE61C14CF986383" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Canceled or expired (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_4C6E7054368E97487BE61C14CF986383_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_4C6E7054368E97487BE61C14CF986383" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_4C6E7054368E97487BE61C14CF986383" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_4C6E7054368E97487BE61C14CF986383" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_4C6E7054368E97487BE61C14CF986383" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_32E236DE69A974E88BAF1C14CF98AB44_periodEndLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_32E236DE69A974E88BAF1C14CF98AB44" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Under option, December 31, 2019 (in dollars per share) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_32E236DE69A974E88BAF1C14CF98AB44" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_8112D4D967C7AFE2E2871C14CF981AA9_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_8112D4D967C7AFE2E2871C14CF981AA9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Exercisable, December 31, 2019 (in dollars per share) </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_8112D4D967C7AFE2E2871C14CF981AA9_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_8112D4D967C7AFE2E2871C14CF981AA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Exercise Price </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_8112D4D967C7AFE2E2871C14CF981AA9" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2127E2587A0159A607661C14CF990274_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2127E2587A0159A607661C14CF990274" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock Options, Weighted-Average Remaining Contractual Term and Aggregate Intrinsic Value </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2127E2587A0159A607661C14CF990274_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2127E2587A0159A607661C14CF990274" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2127E2587A0159A607661C14CF990274" xlink:type="locator"/>
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<link:label id="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_606F74E0DBB4942040EB1C14CF99056A_verboseLabel_en-US" xlink:label="lab_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_606F74E0DBB4942040EB1C14CF99056A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Weighted-average remaining contractual term, under option, December 31, 2019 </link:label>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue_3E90F119B2ACD553E6BE1C14CF99E377_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue_3E90F119B2ACD553E6BE1C14CF99E377" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Aggregate intrinsic value, under option, December 31, 2019 </link:label>
<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue_3E90F119B2ACD553E6BE1C14CF99E377_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue_3E90F119B2ACD553E6BE1C14CF99E377" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value </link:label>
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<link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue_AB70AD5D47BABB25E0461C14CF996312_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue_AB70AD5D47BABB25E0461C14CF996312" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Aggregate intrinsic value, exercisable, December 31, 2019 </link:label>
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<link:label id="lab_us-gaap_InventoryNetAbstract_EB1BAEE1397D1CF8D1BF222FCCD579F4_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryNetAbstract_EB1BAEE1397D1CF8D1BF222FCCD579F4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Inventory, Net [Abstract] </link:label>
<link:label id="lab_us-gaap_InventoryNetAbstract_EB1BAEE1397D1CF8D1BF222FCCD579F4_label_en-US" xlink:label="lab_us-gaap_InventoryNetAbstract_EB1BAEE1397D1CF8D1BF222FCCD579F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Net [Abstract] </link:label>
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<link:label id="lab_us-gaap_InventoryRawMaterialsNetOfReserves_F30F9C7C4007E08741E3222FCCD5EB73_verboseLabel_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsNetOfReserves_F30F9C7C4007E08741E3222FCCD5EB73" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Raw material </link:label>
<link:label id="lab_us-gaap_InventoryRawMaterialsNetOfReserves_F30F9C7C4007E08741E3222FCCD5EB73_label_en-US" xlink:label="lab_us-gaap_InventoryRawMaterialsNetOfReserves_F30F9C7C4007E08741E3222FCCD5EB73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Raw Materials, Net of Reserves </link:label>
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<link:label id="lab_us-gaap_InventoryWorkInProcessNetOfReserves_0D1F467975CA89943996222FCCD67235_verboseLabel_en-US" xlink:label="lab_us-gaap_InventoryWorkInProcessNetOfReserves_0D1F467975CA89943996222FCCD67235" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Work-in-process </link:label>
<link:label id="lab_us-gaap_InventoryWorkInProcessNetOfReserves_0D1F467975CA89943996222FCCD67235_label_en-US" xlink:label="lab_us-gaap_InventoryWorkInProcessNetOfReserves_0D1F467975CA89943996222FCCD67235" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Work in Process, Net of Reserves </link:label>
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<link:label id="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_D7D21DB4396EC251A812222FCCD6469D_verboseLabel_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_D7D21DB4396EC251A812222FCCD6469D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Finished goods </link:label>
<link:label id="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_D7D21DB4396EC251A812222FCCD6469D_label_en-US" xlink:label="lab_us-gaap_InventoryFinishedGoodsNetOfReserves_D7D21DB4396EC251A812222FCCD6469D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, Finished Goods, Net of Reserves </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryFinishedGoodsNetOfReserves" xlink:label="loc_us-gaap_InventoryFinishedGoodsNetOfReserves_D7D21DB4396EC251A812222FCCD6469D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_InventoryLIFOReserve_4E96A0243B8F7FBE5AD1222FCCD63B90_negatedLabel_en-US" xlink:label="lab_us-gaap_InventoryLIFOReserve_4E96A0243B8F7FBE5AD1222FCCD63B90" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> LIFO reserve </link:label>
<link:label id="lab_us-gaap_InventoryLIFOReserve_4E96A0243B8F7FBE5AD1222FCCD63B90_label_en-US" xlink:label="lab_us-gaap_InventoryLIFOReserve_4E96A0243B8F7FBE5AD1222FCCD63B90" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Inventory, LIFO Reserve </link:label>
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<link:label id="lab_us-gaap_InventoryNet_4FE8FFD418E5CDDF89F1222FCCD6B974_totalLabel_en-US" xlink:label="lab_us-gaap_InventoryNet_4FE8FFD418E5CDDF89F1222FCCD6B974" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total inventories </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryNet" xlink:label="loc_us-gaap_InventoryNet_4FE8FFD418E5CDDF89F1222FCCD6B974" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrentAbstract_380D60F2004A92817556002FAFFD8419_terseLabel_en-US" xlink:label="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrentAbstract_380D60F2004A92817556002FAFFD8419" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Prepaid expenses and other current assets: </link:label>
<link:label id="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrentAbstract_380D60F2004A92817556002FAFFD8419_label_en-US" xlink:label="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrentAbstract_380D60F2004A92817556002FAFFD8419" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Prepaid Expense and Other Assets, Current [Abstract] </link:label>
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<link:label id="lab_us-gaap_IncomeTaxReceivable_4BC0325CD496679EDBDD002FB00230E4_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxReceivable_4BC0325CD496679EDBDD002FB00230E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Income tax refunds receivable </link:label>
<link:label id="lab_us-gaap_IncomeTaxReceivable_4BC0325CD496679EDBDD002FB00230E4_label_en-US" xlink:label="lab_us-gaap_IncomeTaxReceivable_4BC0325CD496679EDBDD002FB00230E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Income Taxes Receivable </link:label>
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<link:label id="lab_us-gaap_ValueAddedTaxReceivableCurrent_9EAE5DC9DC24CEFEA98E002FB0023BCE_terseLabel_en-US" xlink:label="lab_us-gaap_ValueAddedTaxReceivableCurrent_9EAE5DC9DC24CEFEA98E002FB0023BCE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Value-added-tax receivables </link:label>
<link:label id="lab_us-gaap_ValueAddedTaxReceivableCurrent_9EAE5DC9DC24CEFEA98E002FB0023BCE_label_en-US" xlink:label="lab_us-gaap_ValueAddedTaxReceivableCurrent_9EAE5DC9DC24CEFEA98E002FB0023BCE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Value Added Tax Receivable, Current </link:label>
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<link:label id="lab_us-gaap_AdvancesOnInventoryPurchases_9B52F9188A94DE5BCDCC002FB0025690_terseLabel_en-US" xlink:label="lab_us-gaap_AdvancesOnInventoryPurchases_9B52F9188A94DE5BCDCC002FB0025690" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Vendor advances </link:label>
<link:label id="lab_us-gaap_AdvancesOnInventoryPurchases_9B52F9188A94DE5BCDCC002FB0025690_label_en-US" xlink:label="lab_us-gaap_AdvancesOnInventoryPurchases_9B52F9188A94DE5BCDCC002FB0025690" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Advances on Inventory Purchases </link:label>
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<link:label id="lab_us-gaap_OtherAssetsCurrent_B6F6B81F0D6B785EA2AF002FB0030395_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_B6F6B81F0D6B785EA2AF002FB0030395" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other </link:label>
<link:label id="lab_us-gaap_OtherAssetsCurrent_B6F6B81F0D6B785EA2AF002FB0030395_label_en-US" xlink:label="lab_us-gaap_OtherAssetsCurrent_B6F6B81F0D6B785EA2AF002FB0030395" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets, Current </link:label>
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<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsCurrent_B6F6B81F0D6B785EA2AF002FB0030395" xlink:to="lab_us-gaap_OtherAssetsCurrent_B6F6B81F0D6B785EA2AF002FB0030395" xlink:type="arc"/>
<link:label id="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_D0A7A3A7E6EA1D7D133C002FB003FFC9_totalLabel_en-US" xlink:label="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_D0A7A3A7E6EA1D7D133C002FB003FFC9" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total prepaid expenses and other current assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_D0A7A3A7E6EA1D7D133C002FB003FFC9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_D0A7A3A7E6EA1D7D133C002FB003FFC9" xlink:to="lab_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_D0A7A3A7E6EA1D7D133C002FB003FFC9" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAssetsAbstract_733F47D8CA13168B562B002FB003A031_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsAbstract_733F47D8CA13168B562B002FB003A031" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other assets: </link:label>
<link:label id="lab_us-gaap_OtherAssetsAbstract_733F47D8CA13168B562B002FB003A031_label_en-US" xlink:label="lab_us-gaap_OtherAssetsAbstract_733F47D8CA13168B562B002FB003A031" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsAbstract" xlink:label="loc_us-gaap_OtherAssetsAbstract_733F47D8CA13168B562B002FB003A031" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsAbstract_733F47D8CA13168B562B002FB003A031" xlink:to="lab_us-gaap_OtherAssetsAbstract_733F47D8CA13168B562B002FB003A031" xlink:type="arc"/>
<link:label id="lab_us-gaap_CashSurrenderValueOfLifeInsurance_14E62008A77D49186AA1002FB003DB9E_terseLabel_en-US" xlink:label="lab_us-gaap_CashSurrenderValueOfLifeInsurance_14E62008A77D49186AA1002FB003DB9E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash surrender value of life insurance policies </link:label>
<link:label id="lab_us-gaap_CashSurrenderValueOfLifeInsurance_14E62008A77D49186AA1002FB003DB9E_label_en-US" xlink:label="lab_us-gaap_CashSurrenderValueOfLifeInsurance_14E62008A77D49186AA1002FB003DB9E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cash Surrender Value of Life Insurance </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CashSurrenderValueOfLifeInsurance" xlink:label="loc_us-gaap_CashSurrenderValueOfLifeInsurance_14E62008A77D49186AA1002FB003DB9E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashSurrenderValueOfLifeInsurance_14E62008A77D49186AA1002FB003DB9E" xlink:to="lab_us-gaap_CashSurrenderValueOfLifeInsurance_14E62008A77D49186AA1002FB003DB9E" xlink:type="arc"/>
<link:label id="lab_itw_AccruedPensionAsset_E8582F87C810097DE265002FB003A6B5_terseLabel_en-US" xlink:label="lab_itw_AccruedPensionAsset_E8582F87C810097DE265002FB003A6B5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Prepaid pension assets </link:label>
<link:label id="lab_itw_AccruedPensionAsset_E8582F87C810097DE265002FB003A6B5_label_en-US" xlink:label="lab_itw_AccruedPensionAsset_E8582F87C810097DE265002FB003A6B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrued Pension Asset </link:label>
<link:label id="lab_itw_AccruedPensionAsset_E8582F87C810097DE265002FB003A6B5_documentation_en-US" xlink:label="lab_itw_AccruedPensionAsset_E8582F87C810097DE265002FB003A6B5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Accrued Pension Asset </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_AccruedPensionAsset" xlink:label="loc_itw_AccruedPensionAsset_E8582F87C810097DE265002FB003A6B5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_AccruedPensionAsset_E8582F87C810097DE265002FB003A6B5" xlink:to="lab_itw_AccruedPensionAsset_E8582F87C810097DE265002FB003A6B5" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseRightOfUseAsset_6302589F4340123BADD500FF034370C4_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseRightOfUseAsset_6302589F4340123BADD500FF034370C4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating lease right-of-use asset </link:label>
<link:label id="lab_us-gaap_OperatingLeaseRightOfUseAsset_6302589F4340123BADD500FF034370C4_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseRightOfUseAsset_6302589F4340123BADD500FF034370C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Right-of-Use Asset </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_6302589F4340123BADD500FF034370C4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseRightOfUseAsset_6302589F4340123BADD500FF034370C4" xlink:to="lab_us-gaap_OperatingLeaseRightOfUseAsset_6302589F4340123BADD500FF034370C4" xlink:type="arc"/>
<link:label id="lab_us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized_185A81C565DFFA399A05002FB0049E8D_verboseLabel_en-US" xlink:label="lab_us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized_185A81C565DFFA399A05002FB0049E8D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Customer tooling </link:label>
<link:label id="lab_us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized_185A81C565DFFA399A05002FB0049E8D_label_en-US" xlink:label="lab_us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized_185A81C565DFFA399A05002FB0049E8D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Preproduction Costs Related to Long-term Supply Arrangements, Costs Capitalized </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized" xlink:label="loc_us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized_185A81C565DFFA399A05002FB0049E8D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized_185A81C565DFFA399A05002FB0049E8D" xlink:to="lab_us-gaap_PreproductionCostsRelatedToLongTermSupplyArrangementsCostsCapitalized_185A81C565DFFA399A05002FB0049E8D" xlink:type="arc"/>
<link:label id="lab_us-gaap_Investments_AAA042C9715BB678DD85002FB004FF3B_verboseLabel_en-US" xlink:label="lab_us-gaap_Investments_AAA042C9715BB678DD85002FB004FF3B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Investments </link:label>
<link:label id="lab_us-gaap_Investments_AAA042C9715BB678DD85002FB004FF3B_label_en-US" xlink:label="lab_us-gaap_Investments_AAA042C9715BB678DD85002FB004FF3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Investments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_Investments" xlink:label="loc_us-gaap_Investments_AAA042C9715BB678DD85002FB004FF3B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Investments_AAA042C9715BB678DD85002FB004FF3B" xlink:to="lab_us-gaap_Investments_AAA042C9715BB678DD85002FB004FF3B" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAssetsMiscellaneousNoncurrent_7762D3ED42BC68A17AAA002FB004A2F5_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsMiscellaneousNoncurrent_7762D3ED42BC68A17AAA002FB004A2F5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other </link:label>
<link:label id="lab_us-gaap_OtherAssetsMiscellaneousNoncurrent_7762D3ED42BC68A17AAA002FB004A2F5_label_en-US" xlink:label="lab_us-gaap_OtherAssetsMiscellaneousNoncurrent_7762D3ED42BC68A17AAA002FB004A2F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Assets, Miscellaneous, Noncurrent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsMiscellaneousNoncurrent" xlink:label="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_7762D3ED42BC68A17AAA002FB004A2F5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsMiscellaneousNoncurrent_7762D3ED42BC68A17AAA002FB004A2F5" xlink:to="lab_us-gaap_OtherAssetsMiscellaneousNoncurrent_7762D3ED42BC68A17AAA002FB004A2F5" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherAssetsNoncurrent_054C3FF1499F114732D6002FB00456B8_totalLabel_en-US" xlink:label="lab_us-gaap_OtherAssetsNoncurrent_054C3FF1499F114732D6002FB00456B8" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total other assets </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_054C3FF1499F114732D6002FB00456B8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssetsNoncurrent_054C3FF1499F114732D6002FB00456B8" xlink:to="lab_us-gaap_OtherAssetsNoncurrent_054C3FF1499F114732D6002FB00456B8" xlink:type="arc"/>
<link:label id="lab_us-gaap_AccruedLiabilitiesCurrentAbstract_EA0CBC8B49B451BC4EE0002FB00499F3_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesCurrentAbstract_EA0CBC8B49B451BC4EE0002FB00499F3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accrued expenses: </link:label>
<link:label id="lab_us-gaap_AccruedLiabilitiesCurrentAbstract_EA0CBC8B49B451BC4EE0002FB00499F3_label_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesCurrentAbstract_EA0CBC8B49B451BC4EE0002FB00499F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accrued Liabilities, Current [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccruedLiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_EA0CBC8B49B451BC4EE0002FB00499F3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_EA0CBC8B49B451BC4EE0002FB00499F3" xlink:to="lab_us-gaap_AccruedLiabilitiesCurrentAbstract_EA0CBC8B49B451BC4EE0002FB00499F3" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherEmployeeRelatedLiabilitiesCurrent_8B7AC50FB410B7550AC5002FB004D8C9_terseLabel_en-US" xlink:label="lab_us-gaap_OtherEmployeeRelatedLiabilitiesCurrent_8B7AC50FB410B7550AC5002FB004D8C9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Compensation and employee benefits </link:label>
<link:label id="lab_us-gaap_OtherEmployeeRelatedLiabilitiesCurrent_8B7AC50FB410B7550AC5002FB004D8C9_label_en-US" xlink:label="lab_us-gaap_OtherEmployeeRelatedLiabilitiesCurrent_8B7AC50FB410B7550AC5002FB004D8C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Employee-related Liabilities, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherEmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaap_OtherEmployeeRelatedLiabilitiesCurrent_8B7AC50FB410B7550AC5002FB004D8C9" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherEmployeeRelatedLiabilitiesCurrent_8B7AC50FB410B7550AC5002FB004D8C9" xlink:to="lab_us-gaap_OtherEmployeeRelatedLiabilitiesCurrent_8B7AC50FB410B7550AC5002FB004D8C9" xlink:type="arc"/>
<link:label id="lab_itw_DeferredRevenueAndCustomerDepositCurrent_645214342CB32F42EF76002FB0052EE7_terseLabel_en-US" xlink:label="lab_itw_DeferredRevenueAndCustomerDepositCurrent_645214342CB32F42EF76002FB0052EE7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred revenue and customer deposits </link:label>
<link:label id="lab_itw_DeferredRevenueAndCustomerDepositCurrent_645214342CB32F42EF76002FB0052EE7_label_en-US" xlink:label="lab_itw_DeferredRevenueAndCustomerDepositCurrent_645214342CB32F42EF76002FB0052EE7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred Revenue and Customer Deposit Current </link:label>
<link:label id="lab_itw_DeferredRevenueAndCustomerDepositCurrent_645214342CB32F42EF76002FB0052EE7_documentation_en-US" xlink:label="lab_itw_DeferredRevenueAndCustomerDepositCurrent_645214342CB32F42EF76002FB0052EE7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Deferred revenue and customer deposit current. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_DeferredRevenueAndCustomerDepositCurrent" xlink:label="loc_itw_DeferredRevenueAndCustomerDepositCurrent_645214342CB32F42EF76002FB0052EE7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_DeferredRevenueAndCustomerDepositCurrent_645214342CB32F42EF76002FB0052EE7" xlink:to="lab_itw_DeferredRevenueAndCustomerDepositCurrent_645214342CB32F42EF76002FB0052EE7" xlink:type="arc"/>
<link:label id="lab_itw_RebateAccrualCurrent_2612ACA2F819173AECBF002FB0057B6C_terseLabel_en-US" xlink:label="lab_itw_RebateAccrualCurrent_2612ACA2F819173AECBF002FB0057B6C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Rebates </link:label>
<link:label id="lab_itw_RebateAccrualCurrent_2612ACA2F819173AECBF002FB0057B6C_label_en-US" xlink:label="lab_itw_RebateAccrualCurrent_2612ACA2F819173AECBF002FB0057B6C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Rebate Accrual Current </link:label>
<link:label id="lab_itw_RebateAccrualCurrent_2612ACA2F819173AECBF002FB0057B6C_documentation_en-US" xlink:label="lab_itw_RebateAccrualCurrent_2612ACA2F819173AECBF002FB0057B6C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Rebate accrual current </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_RebateAccrualCurrent" xlink:label="loc_itw_RebateAccrualCurrent_2612ACA2F819173AECBF002FB0057B6C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_RebateAccrualCurrent_2612ACA2F819173AECBF002FB0057B6C" xlink:to="lab_itw_RebateAccrualCurrent_2612ACA2F819173AECBF002FB0057B6C" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseLiabilityCurrent_0806629128F5B14D54F30102C7332C4F_netLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityCurrent_0806629128F5B14D54F30102C7332C4F" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US"> Current portion of operating lease liability </link:label>
<link:label id="lab_us-gaap_OperatingLeaseLiabilityCurrent_0806629128F5B14D54F30102C7332C4F_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityCurrent_0806629128F5B14D54F30102C7332C4F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Liability, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_0806629128F5B14D54F30102C7332C4F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiabilityCurrent_0806629128F5B14D54F30102C7332C4F" xlink:to="lab_us-gaap_OperatingLeaseLiabilityCurrent_0806629128F5B14D54F30102C7332C4F" xlink:type="arc"/>
<link:label id="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_46FD8B2C0AB047715428002FB005E65B_terseLabel_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_46FD8B2C0AB047715428002FB005E65B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Warranties </link:label>
<link:label id="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_46FD8B2C0AB047715428002FB005E65B_label_en-US" xlink:label="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_46FD8B2C0AB047715428002FB005E65B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Product Warranty Accrual, Current </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ProductWarrantyAccrualClassifiedCurrent" xlink:label="loc_us-gaap_ProductWarrantyAccrualClassifiedCurrent_46FD8B2C0AB047715428002FB005E65B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProductWarrantyAccrualClassifiedCurrent_46FD8B2C0AB047715428002FB005E65B" xlink:to="lab_us-gaap_ProductWarrantyAccrualClassifiedCurrent_46FD8B2C0AB047715428002FB005E65B" xlink:type="arc"/>
<link:label id="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_688B71D653460FDFC1CD002FB00522B5_verboseLabel_en-US" xlink:label="lab_us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities_688B71D653460FDFC1CD002FB00522B5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Current portion of pension and other postretirement benefit obligations </link:label>
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<link:label id="lab_itw_AllowanceForDoubtfulAccountsReceivableWriteoffsNetofRecoveries_0B60DF9F773B312448B23810281EA820_label_en-US" xlink:label="lab_itw_AllowanceForDoubtfulAccountsReceivableWriteoffsNetofRecoveries_0B60DF9F773B312448B23810281EA820" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Allowance For Doubtful Accounts Receivable, Write-offs, Net of Recoveries </link:label>
<link:label id="lab_itw_AllowanceForDoubtfulAccountsReceivableWriteoffsNetofRecoveries_0B60DF9F773B312448B23810281EA820_documentation_en-US" xlink:label="lab_itw_AllowanceForDoubtfulAccountsReceivableWriteoffsNetofRecoveries_0B60DF9F773B312448B23810281EA820" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Allowance For Doubtful Accounts Receivable, Write-offs, Net of Recoveries </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_AllowanceForDoubtfulAccountsReceivableWriteoffsNetofRecoveries" xlink:label="loc_itw_AllowanceForDoubtfulAccountsReceivableWriteoffsNetofRecoveries_0B60DF9F773B312448B23810281EA820" xlink:type="locator"/>
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<link:label id="lab_itw_AllowanceForDoubtfulAccountsReceivableTransferToAssetsHeldForSale_27392B7FE3941E0C3AFF3810281EE5DD_negatedTerseLabel_en-US" xlink:label="lab_itw_AllowanceForDoubtfulAccountsReceivableTransferToAssetsHeldForSale_27392B7FE3941E0C3AFF3810281EE5DD" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Transfer to assets held for sale </link:label>
<link:label id="lab_itw_AllowanceForDoubtfulAccountsReceivableTransferToAssetsHeldForSale_27392B7FE3941E0C3AFF3810281EE5DD_label_en-US" xlink:label="lab_itw_AllowanceForDoubtfulAccountsReceivableTransferToAssetsHeldForSale_27392B7FE3941E0C3AFF3810281EE5DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Allowance For Doubtful Accounts Receivable, Transfer To Assets Held For Sale </link:label>
<link:label id="lab_itw_AllowanceForDoubtfulAccountsReceivableTransferToAssetsHeldForSale_27392B7FE3941E0C3AFF3810281EE5DD_documentation_en-US" xlink:label="lab_itw_AllowanceForDoubtfulAccountsReceivableTransferToAssetsHeldForSale_27392B7FE3941E0C3AFF3810281EE5DD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Allowance For Doubtful Accounts Receivable, Transfer To Assets Held For Sale </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_AllowanceForDoubtfulAccountsReceivableTransferToAssetsHeldForSale" xlink:label="loc_itw_AllowanceForDoubtfulAccountsReceivableTransferToAssetsHeldForSale_27392B7FE3941E0C3AFF3810281EE5DD" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_AllowanceForDoubtfulAccountsReceivableTransferToAssetsHeldForSale_27392B7FE3941E0C3AFF3810281EE5DD" xlink:to="lab_itw_AllowanceForDoubtfulAccountsReceivableTransferToAssetsHeldForSale_27392B7FE3941E0C3AFF3810281EE5DD" xlink:type="arc"/>
<link:label id="lab_itw_AllowanceForDoubtfulAccountsReceivableForeignCurrencyTranslation_F444B00C7C7B86397ADA3810281F5325_negatedTerseLabel_en-US" xlink:label="lab_itw_AllowanceForDoubtfulAccountsReceivableForeignCurrencyTranslation_F444B00C7C7B86397ADA3810281F5325" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Foreign currency translation </link:label>
<link:label id="lab_itw_AllowanceForDoubtfulAccountsReceivableForeignCurrencyTranslation_F444B00C7C7B86397ADA3810281F5325_label_en-US" xlink:label="lab_itw_AllowanceForDoubtfulAccountsReceivableForeignCurrencyTranslation_F444B00C7C7B86397ADA3810281F5325" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Allowance For Doubtful Accounts Receivable, Foreign Currency Translation </link:label>
<link:label id="lab_itw_AllowanceForDoubtfulAccountsReceivableForeignCurrencyTranslation_F444B00C7C7B86397ADA3810281F5325_documentation_en-US" xlink:label="lab_itw_AllowanceForDoubtfulAccountsReceivableForeignCurrencyTranslation_F444B00C7C7B86397ADA3810281F5325" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Allowance For Doubtful Accounts Receivable, Foreign Currency Translation </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_AllowanceForDoubtfulAccountsReceivableForeignCurrencyTranslation" xlink:label="loc_itw_AllowanceForDoubtfulAccountsReceivableForeignCurrencyTranslation_F444B00C7C7B86397ADA3810281F5325" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AllowanceForDoubtfulAccountsReceivable_F79C0619E8A6DF845E683810281F08DE_periodEndLabel_en-US" xlink:label="lab_us-gaap_AllowanceForDoubtfulAccountsReceivable_F79C0619E8A6DF845E683810281F08DE" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Ending balance </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_F79C0619E8A6DF845E683810281F08DE" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_AAF480C1F6D98C1415CA381025B304BC_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_AAF480C1F6D98C1415CA381025B304BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cost of revenue </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_AAF480C1F6D98C1415CA381025B304BC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfGoodsAndServicesSold_AAF480C1F6D98C1415CA381025B304BC" xlink:to="lab_us-gaap_CostOfGoodsAndServicesSold_AAF480C1F6D98C1415CA381025B304BC" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtByMaturityAbstract_BC89644E71C4DCC3B0C4FCA8290FD0B4_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtByMaturityAbstract_BC89644E71C4DCC3B0C4FCA8290FD0B4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Scheduled maturities of long-term debt </link:label>
<link:label id="lab_us-gaap_LongTermDebtByMaturityAbstract_BC89644E71C4DCC3B0C4FCA8290FD0B4_label_en-US" xlink:label="lab_us-gaap_LongTermDebtByMaturityAbstract_BC89644E71C4DCC3B0C4FCA8290FD0B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Fiscal Year Maturity [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtByMaturityAbstract" xlink:label="loc_us-gaap_LongTermDebtByMaturityAbstract_BC89644E71C4DCC3B0C4FCA8290FD0B4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtByMaturityAbstract_BC89644E71C4DCC3B0C4FCA8290FD0B4" xlink:to="lab_us-gaap_LongTermDebtByMaturityAbstract_BC89644E71C4DCC3B0C4FCA8290FD0B4" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_D78CDCA72DC208119FF0FCA8290F55C1_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_D78CDCA72DC208119FF0FCA8290F55C1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_D78CDCA72DC208119FF0FCA8290F55C1_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_D78CDCA72DC208119FF0FCA8290F55C1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_D78CDCA72DC208119FF0FCA8290F55C1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_D78CDCA72DC208119FF0FCA8290F55C1" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_D78CDCA72DC208119FF0FCA8290F55C1" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_609A2755B5923CC05A83FCA829103DB5_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_609A2755B5923CC05A83FCA829103DB5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 2021 </link:label>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_609A2755B5923CC05A83FCA829103DB5_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_609A2755B5923CC05A83FCA829103DB5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Maturities, Repayments of Principal in Year Two </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_609A2755B5923CC05A83FCA829103DB5" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_609A2755B5923CC05A83FCA829103DB5" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_609A2755B5923CC05A83FCA829103DB5" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_BBD44EFCD70C623C3989FCA82910E453_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_BBD44EFCD70C623C3989FCA82910E453" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 2022 </link:label>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_BBD44EFCD70C623C3989FCA82910E453_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_BBD44EFCD70C623C3989FCA82910E453" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Maturities, Repayments of Principal in Year Three </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_BBD44EFCD70C623C3989FCA82910E453" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_BBD44EFCD70C623C3989FCA82910E453" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_BBD44EFCD70C623C3989FCA82910E453" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_D99398B118C35F73488EFCA8291081A4_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_D99398B118C35F73488EFCA8291081A4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 2023 </link:label>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_D99398B118C35F73488EFCA8291081A4_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_D99398B118C35F73488EFCA8291081A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Maturities, Repayments of Principal in Year Four </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_D99398B118C35F73488EFCA8291081A4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_D99398B118C35F73488EFCA8291081A4" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_D99398B118C35F73488EFCA8291081A4" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_BF8EEA3B249F96B77250FCA829106F27_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_BF8EEA3B249F96B77250FCA829106F27" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 2024 </link:label>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_BF8EEA3B249F96B77250FCA829106F27_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_BF8EEA3B249F96B77250FCA829106F27" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Maturities, Repayments of Principal in Year Five </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_BF8EEA3B249F96B77250FCA829106F27" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_BF8EEA3B249F96B77250FCA829106F27" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_BF8EEA3B249F96B77250FCA829106F27" xlink:type="arc"/>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_6EE5FEF11A52EE999B07FCA8291018C4_verboseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_6EE5FEF11A52EE999B07FCA8291018C4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 2025 and future years </link:label>
<link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_6EE5FEF11A52EE999B07FCA8291018C4_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_6EE5FEF11A52EE999B07FCA8291018C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Debt, Maturities, Repayments of Principal after Year Five </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_6EE5FEF11A52EE999B07FCA8291018C4" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DisaggregationOfRevenueTable_4ADB81871CA6B342F524381027A6BE67_terseLabel_en-US" xlink:label="lab_us-gaap_DisaggregationOfRevenueTable_4ADB81871CA6B342F524381027A6BE67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Disaggregation of Revenue [Table] </link:label>
<link:label id="lab_us-gaap_DisaggregationOfRevenueTable_4ADB81871CA6B342F524381027A6BE67_label_en-US" xlink:label="lab_us-gaap_DisaggregationOfRevenueTable_4ADB81871CA6B342F524381027A6BE67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Disaggregation of Revenue [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DisaggregationOfRevenueTable" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_4ADB81871CA6B342F524381027A6BE67" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DisaggregationOfRevenueLineItems_59CAFBBDC51C2CE08FFF381027A91A03_terseLabel_en-US" xlink:label="lab_us-gaap_DisaggregationOfRevenueLineItems_59CAFBBDC51C2CE08FFF381027A91A03" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Disaggregation of Revenue [Line Items] </link:label>
<link:label id="lab_us-gaap_DisaggregationOfRevenueLineItems_59CAFBBDC51C2CE08FFF381027A91A03_label_en-US" xlink:label="lab_us-gaap_DisaggregationOfRevenueLineItems_59CAFBBDC51C2CE08FFF381027A91A03" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Disaggregation of Revenue [Line Items] </link:label>
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<link:label id="lab_us-gaap_AccountingStandardsUpdate201409Member_9DC7F11908835D0E2C5E381028383F27_label_en-US" xlink:label="lab_us-gaap_AccountingStandardsUpdate201409Member_9DC7F11908835D0E2C5E381028383F27" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounting Standards Update 2014-09 [Member] </link:label>
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<link:label id="lab_us-gaap_AccountingStandardsUpdate201616Member_74208D7F0A9BDA56170A38102838A911_label_en-US" xlink:label="lab_us-gaap_AccountingStandardsUpdate201616Member_74208D7F0A9BDA56170A38102838A911" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounting Standards Update 2016-16 [Member] </link:label>
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<link:label id="lab_us-gaap_AccountingStandardsUpdate201602Member_E76E9FA5A5877616E72E381028386E54_terseLabel_en-US" xlink:label="lab_us-gaap_AccountingStandardsUpdate201602Member_E76E9FA5A5877616E72E381028386E54" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accounting Standards Update 2016-02 </link:label>
<link:label id="lab_us-gaap_AccountingStandardsUpdate201602Member_E76E9FA5A5877616E72E381028386E54_label_en-US" xlink:label="lab_us-gaap_AccountingStandardsUpdate201602Member_E76E9FA5A5877616E72E381028386E54" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Accounting Standards Update 2016-02 [Member] </link:label>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_02638D8BBE98F7BE2C1D38102839E3B6_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_02638D8BBE98F7BE2C1D38102839E3B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets [Line Items] </link:label>
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<link:label id="lab_itw_NumberOfCountriesWithCompanyOperations_0FB89D3740AE630BBD4238102839F504_terseLabel_en-US" xlink:label="lab_itw_NumberOfCountriesWithCompanyOperations_0FB89D3740AE630BBD4238102839F504" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Number of countries with company operations </link:label>
<link:label id="lab_itw_NumberOfCountriesWithCompanyOperations_0FB89D3740AE630BBD4238102839F504_label_en-US" xlink:label="lab_itw_NumberOfCountriesWithCompanyOperations_0FB89D3740AE630BBD4238102839F504" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Number of Countries with Company Operations </link:label>
<link:label id="lab_itw_NumberOfCountriesWithCompanyOperations_0FB89D3740AE630BBD4238102839F504_documentation_en-US" xlink:label="lab_itw_NumberOfCountriesWithCompanyOperations_0FB89D3740AE630BBD4238102839F504" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Number of countries with company operations. </link:label>
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<link:label id="lab_us-gaap_ContractWithCustomerLiability_E01047B33E32533BC8F33823AAC13599_terseLabel_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiability_E01047B33E32533BC8F33823AAC13599" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred revenue and customer deposits </link:label>
<link:label id="lab_us-gaap_ContractWithCustomerLiability_E01047B33E32533BC8F33823AAC13599_label_en-US" xlink:label="lab_us-gaap_ContractWithCustomerLiability_E01047B33E32533BC8F33823AAC13599" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Contract with Customer, Liability </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ContractWithCustomerLiability" xlink:label="loc_us-gaap_ContractWithCustomerLiability_E01047B33E32533BC8F33823AAC13599" xlink:type="locator"/>
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<link:label id="lab_us-gaap_ResearchAndDevelopmentExpense_82D0D6AF7C18A0F8DD1838102839ACE5_terseLabel_en-US" xlink:label="lab_us-gaap_ResearchAndDevelopmentExpense_82D0D6AF7C18A0F8DD1838102839ACE5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Research and development expenses </link:label>
<link:label id="lab_us-gaap_ResearchAndDevelopmentExpense_82D0D6AF7C18A0F8DD1838102839ACE5_label_en-US" xlink:label="lab_us-gaap_ResearchAndDevelopmentExpense_82D0D6AF7C18A0F8DD1838102839ACE5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Research and Development Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_82D0D6AF7C18A0F8DD1838102839ACE5" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AdvertisingExpense_4257243AE5A85A82B43938102839479D_verboseLabel_en-US" xlink:label="lab_us-gaap_AdvertisingExpense_4257243AE5A85A82B43938102839479D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Advertising expenses </link:label>
<link:label id="lab_us-gaap_AdvertisingExpense_4257243AE5A85A82B43938102839479D_label_en-US" xlink:label="lab_us-gaap_AdvertisingExpense_4257243AE5A85A82B43938102839479D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Advertising Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdvertisingExpense" xlink:label="loc_us-gaap_AdvertisingExpense_4257243AE5A85A82B43938102839479D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_PercentageOfLIFOInventory_D75337FE6E99A3BB0ED53810283ABB59_verboseLabel_en-US" xlink:label="lab_us-gaap_PercentageOfLIFOInventory_D75337FE6E99A3BB0ED53810283ABB59" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Percentage of total inventories priced at LIFO </link:label>
<link:label id="lab_us-gaap_PercentageOfLIFOInventory_D75337FE6E99A3BB0ED53810283ABB59_label_en-US" xlink:label="lab_us-gaap_PercentageOfLIFOInventory_D75337FE6E99A3BB0ED53810283ABB59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Percentage of LIFO Inventory </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PercentageOfLIFOInventory" xlink:label="loc_us-gaap_PercentageOfLIFOInventory_D75337FE6E99A3BB0ED53810283ABB59" xlink:type="locator"/>
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<link:label id="lab_us-gaap_InventoryLIFOReserve_75E70080DDEC3AF177AD3810283A490F_verboseLabel_en-US" xlink:label="lab_us-gaap_InventoryLIFOReserve_75E70080DDEC3AF177AD3810283A490F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> LIFO reserve </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_InventoryLIFOReserve" xlink:label="loc_us-gaap_InventoryLIFOReserve_75E70080DDEC3AF177AD3810283A490F" xlink:type="locator"/>
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<link:label id="lab_itw_DepreciationIncludedInIncomeFromContinuingOperations_D6A254FED08E7657448C3810283A9154_verboseLabel_en-US" xlink:label="lab_itw_DepreciationIncludedInIncomeFromContinuingOperations_D6A254FED08E7657448C3810283A9154" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Depreciation </link:label>
<link:label id="lab_itw_DepreciationIncludedInIncomeFromContinuingOperations_D6A254FED08E7657448C3810283A9154_label_en-US" xlink:label="lab_itw_DepreciationIncludedInIncomeFromContinuingOperations_D6A254FED08E7657448C3810283A9154" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Depreciation Included in Income from Continuing Operations </link:label>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_6A2F0BC1F1EDAA9F8F443810283A733A_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetUsefulLife_6A2F0BC1F1EDAA9F8F443810283A733A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Amortizable intangible asset, useful life </link:label>
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<link:label id="lab_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1_56E2B1750CB066DC6B9E3810283ABC55_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1_56E2B1750CB066DC6B9E3810283ABC55" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> New accounting pronouncement or change in accounting principle, cumulative effect of change on equity or net assets </link:label>
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<link:label id="lab_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_68EFCFA027A0FD450D003810283A0F21_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_68EFCFA027A0FD450D003810283A0F21" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Adoption of new accounting guidance </link:label>
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<link:label id="lab_us-gaap_OperatingLeaseLiability_1612EC1E2B89DE22B40E3810283B7AA2_verboseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_1612EC1E2B89DE22B40E3810283B7AA2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Operating lease, liability </link:label>
<link:label id="lab_us-gaap_OperatingLeaseLiability_1612EC1E2B89DE22B40E3810283B7AA2_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_1612EC1E2B89DE22B40E3810283B7AA2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Liability </link:label>
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<link:label id="lab_us-gaap_StatementTable_5A2ADE30DA00A53FB97235E1AA82234B_terseLabel_en-US" xlink:label="lab_us-gaap_StatementTable_5A2ADE30DA00A53FB97235E1AA82234B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Statement [Table] </link:label>
<link:label id="lab_us-gaap_StatementTable_5A2ADE30DA00A53FB97235E1AA82234B_label_en-US" xlink:label="lab_us-gaap_StatementTable_5A2ADE30DA00A53FB97235E1AA82234B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement [Table] </link:label>
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<link:label id="lab_us-gaap_CommonStockMember_82BED77024AF0DD58AF835E1AA84992D_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockMember_82BED77024AF0DD58AF835E1AA84992D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common Stock </link:label>
<link:label id="lab_us-gaap_CommonStockMember_82BED77024AF0DD58AF835E1AA84992D_label_en-US" xlink:label="lab_us-gaap_CommonStockMember_82BED77024AF0DD58AF835E1AA84992D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_82BED77024AF0DD58AF835E1AA84992D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_9280ACB427D042B19EDB35E1AA86E1E5_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_9280ACB427D042B19EDB35E1AA86E1E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Additional Paid-in Capital </link:label>
<link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_9280ACB427D042B19EDB35E1AA86E1E5_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_9280ACB427D042B19EDB35E1AA86E1E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Additional Paid-in Capital [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_9280ACB427D042B19EDB35E1AA86E1E5" xlink:type="locator"/>
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<link:label id="lab_us-gaap_TreasuryStockCommonMember_02E3DFE250D0F224C17D35E1AA878469_terseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockCommonMember_02E3DFE250D0F224C17D35E1AA878469" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common Stock Held in Treasury </link:label>
<link:label id="lab_us-gaap_TreasuryStockCommonMember_02E3DFE250D0F224C17D35E1AA878469_label_en-US" xlink:label="lab_us-gaap_TreasuryStockCommonMember_02E3DFE250D0F224C17D35E1AA878469" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Treasury Stock, Common [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TreasuryStockCommonMember" xlink:label="loc_us-gaap_TreasuryStockCommonMember_02E3DFE250D0F224C17D35E1AA878469" xlink:type="locator"/>
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<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_1EBACCA73C04BB99DEC435E26FF28CE7_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_1EBACCA73C04BB99DEC435E26FF28CE7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Accumulated Other Comprehensive Income (Loss) </link:label>
<link:label id="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_1EBACCA73C04BB99DEC435E26FF28CE7_label_en-US" xlink:label="lab_us-gaap_AccumulatedOtherComprehensiveIncomeMember_1EBACCA73C04BB99DEC435E26FF28CE7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> AOCI Attributable to Parent [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_1EBACCA73C04BB99DEC435E26FF28CE7" xlink:type="locator"/>
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<link:label id="lab_us-gaap_NoncontrollingInterestMember_6104788E98D21CD6AF6835E1AA877828_terseLabel_en-US" xlink:label="lab_us-gaap_NoncontrollingInterestMember_6104788E98D21CD6AF6835E1AA877828" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Noncontrolling Interest </link:label>
<link:label id="lab_us-gaap_NoncontrollingInterestMember_6104788E98D21CD6AF6835E1AA877828_label_en-US" xlink:label="lab_us-gaap_NoncontrollingInterestMember_6104788E98D21CD6AF6835E1AA877828" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Noncontrolling Interest [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="loc_us-gaap_NoncontrollingInterestMember_6104788E98D21CD6AF6835E1AA877828" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StatementLineItems_B19E203B4D99723B70C735E1AA8778F3_terseLabel_en-US" xlink:label="lab_us-gaap_StatementLineItems_B19E203B4D99723B70C735E1AA8778F3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Statement [Line Items] </link:label>
<link:label id="lab_us-gaap_StatementLineItems_B19E203B4D99723B70C735E1AA8778F3_label_en-US" xlink:label="lab_us-gaap_StatementLineItems_B19E203B4D99723B70C735E1AA8778F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_B19E203B4D99723B70C735E1AA8778F3" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_4C130812C007C28052E635E1AA8789CF_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_4C130812C007C28052E635E1AA8789CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Stockholders' Equity [Roll Forward] </link:label>
<link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_4C130812C007C28052E635E1AA8789CF_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_4C130812C007C28052E635E1AA8789CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Increase (Decrease) in Stockholders' Equity [Roll Forward] </link:label>
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<link:label id="lab_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_C43AEB4647DA72CC4CDA35E1AA884DFD_terseLabel_en-US" xlink:label="lab_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_C43AEB4647DA72CC4CDA35E1AA884DFD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Adoption of new accounting guidance </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:label="loc_us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_C43AEB4647DA72CC4CDA35E1AA884DFD" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_4A76DC9D0F5471D3599F35E1AA882071_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_4A76DC9D0F5471D3599F35E1AA882071" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock issued for stock-based compensation </link:label>
<link:label id="lab_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_4A76DC9D0F5471D3599F35E1AA882071_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_4A76DC9D0F5471D3599F35E1AA882071" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture </link:label>
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<link:label id="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_DB9D3E0D06F9B17FC08435E1AA884A19_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_DB9D3E0D06F9B17FC08435E1AA884A19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Stock-based compensation expense </link:label>
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<link:label id="lab_us-gaap_TreasuryStockValueAcquiredCostMethod_B8CF46C9540CCC58A5FE35E1AA892B35_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_TreasuryStockValueAcquiredCostMethod_B8CF46C9540CCC58A5FE35E1AA892B35" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Repurchases of common stock </link:label>
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<link:label id="lab_us-gaap_DividendsCommonStockCash_FB780DC9E8766158D96C35E1AA893976_label_en-US" xlink:label="lab_us-gaap_DividendsCommonStockCash_FB780DC9E8766158D96C35E1AA893976" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Dividends, Common Stock, Cash </link:label>
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<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_871E965FACDE5D6EFD8735E1AA8940F2_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_871E965FACDE5D6EFD8735E1AA8940F2" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Pension and other postretirement benefit adjustments </link:label>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_871E965FACDE5D6EFD8735E1AA8940F2_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_871E965FACDE5D6EFD8735E1AA8940F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax </link:label>
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<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_F3C83E186A32C97866D135E1AA894E90_terseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_F3C83E186A32C97866D135E1AA894E90" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Currency translation adjustments </link:label>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_F3C83E186A32C97866D135E1AA894E90_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_F3C83E186A32C97866D135E1AA894E90" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_F3C83E186A32C97866D135E1AA894E90" xlink:type="locator"/>
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<link:label id="lab_us-gaap_MinorityInterestPeriodIncreaseDecrease_92C353E69ACC391AC35535E1AA893A61_terseLabel_en-US" xlink:label="lab_us-gaap_MinorityInterestPeriodIncreaseDecrease_92C353E69ACC391AC35535E1AA893A61" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Noncontrolling interest </link:label>
<link:label id="lab_us-gaap_MinorityInterestPeriodIncreaseDecrease_92C353E69ACC391AC35535E1AA893A61_label_en-US" xlink:label="lab_us-gaap_MinorityInterestPeriodIncreaseDecrease_92C353E69ACC391AC35535E1AA893A61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Noncontrolling Interest, Period Increase (Decrease) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_MinorityInterestPeriodIncreaseDecrease" xlink:label="loc_us-gaap_MinorityInterestPeriodIncreaseDecrease_92C353E69ACC391AC35535E1AA893A61" xlink:type="locator"/>
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<link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_A964B7052D0EC8AD65D335E1AA8A97D4_periodEndLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_A964B7052D0EC8AD65D335E1AA8A97D4" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US"> Ending balance </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_A964B7052D0EC8AD65D335E1AA8A97D4" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LeaseCost_CAC3E5A0254212E936C0310FF3700D1F_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseCost_CAC3E5A0254212E936C0310FF3700D1F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Rental expense for operating leases </link:label>
<link:label id="lab_us-gaap_LeaseCost_CAC3E5A0254212E936C0310FF3700D1F_label_en-US" xlink:label="lab_us-gaap_LeaseCost_CAC3E5A0254212E936C0310FF3700D1F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lease, Cost </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseCost" xlink:label="loc_us-gaap_LeaseCost_CAC3E5A0254212E936C0310FF3700D1F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LeaseAndRentalExpense_06BDB8B1C074B06E246131550117F4C5_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseAndRentalExpense_06BDB8B1C074B06E246131550117F4C5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Rental expense for operating leases </link:label>
<link:label id="lab_us-gaap_LeaseAndRentalExpense_06BDB8B1C074B06E246131550117F4C5_label_en-US" xlink:label="lab_us-gaap_LeaseAndRentalExpense_06BDB8B1C074B06E246131550117F4C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Leases, Rent Expense </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="loc_us-gaap_LeaseAndRentalExpense_06BDB8B1C074B06E246131550117F4C5" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingLeaseCost_E9E105591CB551975C42310FF371AC53_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseCost_E9E105591CB551975C42310FF371AC53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Rental expense related to capitalized operating leases </link:label>
<link:label id="lab_us-gaap_OperatingLeaseCost_E9E105591CB551975C42310FF371AC53_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseCost_E9E105591CB551975C42310FF371AC53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Cost </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseCost" xlink:label="loc_us-gaap_OperatingLeaseCost_E9E105591CB551975C42310FF371AC53" xlink:type="locator"/>
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<link:label id="lab_itw_ShorttermLeaseandVariableLeaseCost_6F151AA14EF6ED91EDDF310FF371EEA9_terseLabel_en-US" xlink:label="lab_itw_ShorttermLeaseandVariableLeaseCost_6F151AA14EF6ED91EDDF310FF371EEA9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Rental expense related to short-term operating leases and variable lease payments </link:label>
<link:label id="lab_itw_ShorttermLeaseandVariableLeaseCost_6F151AA14EF6ED91EDDF310FF371EEA9_label_en-US" xlink:label="lab_itw_ShorttermLeaseandVariableLeaseCost_6F151AA14EF6ED91EDDF310FF371EEA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Short-term Lease and Variable Lease, Cost </link:label>
<link:label id="lab_itw_ShorttermLeaseandVariableLeaseCost_6F151AA14EF6ED91EDDF310FF371EEA9_documentation_en-US" xlink:label="lab_itw_ShorttermLeaseandVariableLeaseCost_6F151AA14EF6ED91EDDF310FF371EEA9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Short-term Lease and Variable Lease, Cost </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_ShorttermLeaseandVariableLeaseCost" xlink:label="loc_itw_ShorttermLeaseandVariableLeaseCost_6F151AA14EF6ED91EDDF310FF371EEA9" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingLeaseLiabilityCurrent_91B50F78F3708C9C49BB310FF371B63D_verboseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityCurrent_91B50F78F3708C9C49BB310FF371B63D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Current portion of lease liability for operating leases </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_91B50F78F3708C9C49BB310FF371B63D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_87DE6CF70B19BD19E02D310FF371D53B_verboseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_87DE6CF70B19BD19E02D310FF371D53B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Long-term portion of lease liability for operating leases </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_87DE6CF70B19BD19E02D310FF371D53B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_87DE6CF70B19BD19E02D310FF371D53B" xlink:to="lab_us-gaap_OperatingLeaseLiabilityNoncurrent_87DE6CF70B19BD19E02D310FF371D53B" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_0FC1402A198160D7C7F4310FF3718A2D_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_0FC1402A198160D7C7F4310FF3718A2D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Weighted average remaining lease term of operating leases included in lease liability </link:label>
<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_0FC1402A198160D7C7F4310FF3718A2D_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_0FC1402A198160D7C7F4310FF3718A2D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Weighted Average Remaining Lease Term </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1_0FC1402A198160D7C7F4310FF3718A2D" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_C29AA582AB47FCA5C874310FF372F2DF_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_C29AA582AB47FCA5C874310FF372F2DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Weighted average discount rate of operating leases included in lease liability </link:label>
<link:label id="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_C29AA582AB47FCA5C874310FF372F2DF_label_en-US" xlink:label="lab_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_C29AA582AB47FCA5C874310FF372F2DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Weighted Average Discount Rate, Percent </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:label="loc_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent_C29AA582AB47FCA5C874310FF372F2DF" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingLeasePayments_59C9A406BB14893775D9310FF372FC3F_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasePayments_59C9A406BB14893775D9310FF372FC3F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash paid related to maturities of operating lease liabilities </link:label>
<link:label id="lab_us-gaap_OperatingLeasePayments_59C9A406BB14893775D9310FF372FC3F_label_en-US" xlink:label="lab_us-gaap_OperatingLeasePayments_59C9A406BB14893775D9310FF372FC3F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Lease, Payments </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeasePayments" xlink:label="loc_us-gaap_OperatingLeasePayments_59C9A406BB14893775D9310FF372FC3F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_07ACD2D1534FDF5883A2310FF372F26F_terseLabel_en-US" xlink:label="lab_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_07ACD2D1534FDF5883A2310FF372F26F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating lease right-of-use assets obtained in exchange for operating lease liabilities </link:label>
<link:label id="lab_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_07ACD2D1534FDF5883A2310FF372F26F_label_en-US" xlink:label="lab_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_07ACD2D1534FDF5883A2310FF372F26F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Right-of-Use Asset Obtained in Exchange for Operating Lease Liability </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:label="loc_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_07ACD2D1534FDF5883A2310FF372F26F" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_A9A78A36C1E8BDB5D536002F9B83F390_terseLabel_en-US" xlink:label="lab_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_A9A78A36C1E8BDB5D536002F9B83F390" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other Postretirement Benefits </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:label="loc_us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember_A9A78A36C1E8BDB5D536002F9B83F390" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_BE9E63FF664CE934ECAE002F9B83BA17_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_BE9E63FF664CE934ECAE002F9B83BA17" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Weighted-average assumptions used in the valuations of pension and other postretirement benefits </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_BE9E63FF664CE934ECAE002F9B83BA17_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanWeightedAverageAssumptionsUsedInCalculatingBenefitObligationAbstract_BE9E63FF664CE934ECAE002F9B83BA17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract] </link:label>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease" xlink:label="loc_us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease_358C40B111F0B2820286002F9B85C1F0" xlink:type="locator"/>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_AC99B3ECF9950906A07EFCA8294DB919_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_AC99B3ECF9950906A07EFCA8294DB919" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_C44A2D3939FA13323C32FCA8294DBE03_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_C44A2D3939FA13323C32FCA8294DBE03" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Finite-Lived Intangible Assets, Amortization Expense, Year Three </link:label>
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<link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_86BAEE0DE3F977E5C161FCA8294D45B9_verboseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_86BAEE0DE3F977E5C161FCA8294D45B9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 2023 </link:label>
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<link:label id="lab_us-gaap_OtherNonoperatingIncomeExpenseAbstract_426D97668A470E501457222FCC83DA7D_label_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncomeExpenseAbstract_426D97668A470E501457222FCC83DA7D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Nonoperating Income (Expense) [Abstract] </link:label>
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<link:label id="lab_us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations_B709A63C7B20305800F0FC57F11C635A_label_en-US" xlink:label="lab_us-gaap_ForeignIncomeTaxExpenseBenefitContinuingOperations_B709A63C7B20305800F0FC57F11C635A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Foreign Income Tax Expense (Benefit), Continuing Operations </link:label>
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<link:label id="lab_us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperationsAbstract_1723052D3030F69B6AF4FC57F11C5B51_verboseLabel_en-US" xlink:label="lab_us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperationsAbstract_1723052D3030F69B6AF4FC57F11C5B51" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> State income taxes: </link:label>
<link:label id="lab_us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperationsAbstract_1723052D3030F69B6AF4FC57F11C5B51_label_en-US" xlink:label="lab_us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperationsAbstract_1723052D3030F69B6AF4FC57F11C5B51" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> State and Local Income Tax Expense (Benefit), Continuing Operations [Abstract] </link:label>
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<link:label id="lab_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_C7EAE77794002C000206FC57F11CFC83_verboseLabel_en-US" xlink:label="lab_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_C7EAE77794002C000206FC57F11CFC83" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Current </link:label>
<link:label id="lab_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_C7EAE77794002C000206FC57F11CFC83_label_en-US" xlink:label="lab_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_C7EAE77794002C000206FC57F11CFC83" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Current State and Local Tax Expense (Benefit) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:label="loc_us-gaap_CurrentStateAndLocalTaxExpenseBenefit_C7EAE77794002C000206FC57F11CFC83" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_DBB2986AC2D60D4175EBFC57F11C735C_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_DBB2986AC2D60D4175EBFC57F11C735C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Deferred </link:label>
<link:label id="lab_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_DBB2986AC2D60D4175EBFC57F11C735C_label_en-US" xlink:label="lab_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_DBB2986AC2D60D4175EBFC57F11C735C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Deferred State and Local Income Tax Expense (Benefit) </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_DBB2986AC2D60D4175EBFC57F11C735C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_DBB2986AC2D60D4175EBFC57F11C735C" xlink:to="lab_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit_DBB2986AC2D60D4175EBFC57F11C735C" xlink:type="arc"/>
<link:label id="lab_us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations_BF6DBEB83FF9200C342CFC57F11DE3B0_totalLabel_en-US" xlink:label="lab_us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations_BF6DBEB83FF9200C342CFC57F11DE3B0" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total state income taxes </link:label>
<link:label id="lab_us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations_BF6DBEB83FF9200C342CFC57F11DE3B0_label_en-US" xlink:label="lab_us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations_BF6DBEB83FF9200C342CFC57F11DE3B0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> State and Local Income Tax Expense (Benefit), Continuing Operations </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations" xlink:label="loc_us-gaap_StateAndLocalIncomeTaxExpenseBenefitContinuingOperations_BF6DBEB83FF9200C342CFC57F11DE3B0" xlink:type="locator"/>
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<link:label id="lab_us-gaap_IncomeTaxExpenseBenefit_3E71A1D3D60E9C205487FC57F11D4E77_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxExpenseBenefit_3E71A1D3D60E9C205487FC57F11D4E77" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total provision for income taxes </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_3E71A1D3D60E9C205487FC57F11D4E77" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxExpenseBenefit_3E71A1D3D60E9C205487FC57F11D4E77" xlink:to="lab_us-gaap_IncomeTaxExpenseBenefit_3E71A1D3D60E9C205487FC57F11D4E77" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_DE4FD5F2ED331D81B160002F9C6E8B96_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_DE4FD5F2ED331D81B160002F9C6E8B96" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan by Plan Asset Categories [Axis] </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_DE4FD5F2ED331D81B160002F9C6E8B96_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_DE4FD5F2ED331D81B160002F9C6E8B96" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Plan Assets, Category [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:label="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_DE4FD5F2ED331D81B160002F9C6E8B96" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_DE4FD5F2ED331D81B160002F9C6E8B96" xlink:to="lab_us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis_DE4FD5F2ED331D81B160002F9C6E8B96" xlink:type="arc"/>
<link:label id="lab_us-gaap_PlanAssetCategoriesDomain_EFE75FE42616B2D9FE3C002F9C6E67AC_terseLabel_en-US" xlink:label="lab_us-gaap_PlanAssetCategoriesDomain_EFE75FE42616B2D9FE3C002F9C6E67AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Pension Plan Assets [Domain] </link:label>
<link:label id="lab_us-gaap_PlanAssetCategoriesDomain_EFE75FE42616B2D9FE3C002F9C6E67AC_label_en-US" xlink:label="lab_us-gaap_PlanAssetCategoriesDomain_EFE75FE42616B2D9FE3C002F9C6E67AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Plan Assets, Category [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:label="loc_us-gaap_PlanAssetCategoriesDomain_EFE75FE42616B2D9FE3C002F9C6E67AC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PlanAssetCategoriesDomain_EFE75FE42616B2D9FE3C002F9C6E67AC" xlink:to="lab_us-gaap_PlanAssetCategoriesDomain_EFE75FE42616B2D9FE3C002F9C6E67AC" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_F4EEA2C957A28C8090D5002F9CA63B6D_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_F4EEA2C957A28C8090D5002F9CA63B6D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Cash and equivalents </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_F4EEA2C957A28C8090D5002F9CA63B6D_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_F4EEA2C957A28C8090D5002F9CA63B6D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Cash and Cash Equivalents [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember" xlink:label="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_F4EEA2C957A28C8090D5002F9CA63B6D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_F4EEA2C957A28C8090D5002F9CA63B6D" xlink:to="lab_us-gaap_DefinedBenefitPlanCashAndCashEquivalentsMember_F4EEA2C957A28C8090D5002F9CA63B6D" xlink:type="arc"/>
<link:label id="lab_itw_GovernmentSecuritiesMember_ED601AEFF3A21A6987B0002F9CA6BD94_verboseLabel_en-US" xlink:label="lab_itw_GovernmentSecuritiesMember_ED601AEFF3A21A6987B0002F9CA6BD94" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Fixed income securities, government securities </link:label>
<link:label id="lab_itw_GovernmentSecuritiesMember_ED601AEFF3A21A6987B0002F9CA6BD94_label_en-US" xlink:label="lab_itw_GovernmentSecuritiesMember_ED601AEFF3A21A6987B0002F9CA6BD94" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Government Securities [Member] </link:label>
<link:label id="lab_itw_GovernmentSecuritiesMember_ED601AEFF3A21A6987B0002F9CA6BD94_documentation_en-US" xlink:label="lab_itw_GovernmentSecuritiesMember_ED601AEFF3A21A6987B0002F9CA6BD94" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Government securities. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_GovernmentSecuritiesMember" xlink:label="loc_itw_GovernmentSecuritiesMember_ED601AEFF3A21A6987B0002F9CA6BD94" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CorporateDebtSecuritiesMember_C6C42DD39D4D8430E90B002F9CA6EEDB_verboseLabel_en-US" xlink:label="lab_us-gaap_CorporateDebtSecuritiesMember_C6C42DD39D4D8430E90B002F9CA6EEDB" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Fixed income securities, corporate debt securities </link:label>
<link:label id="lab_us-gaap_CorporateDebtSecuritiesMember_C6C42DD39D4D8430E90B002F9CA6EEDB_label_en-US" xlink:label="lab_us-gaap_CorporateDebtSecuritiesMember_C6C42DD39D4D8430E90B002F9CA6EEDB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Corporate Debt Securities [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_C6C42DD39D4D8430E90B002F9CA6EEDB" xlink:type="locator"/>
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<link:label id="lab_itw_InvestmentContractsWithInsuranceCompaniesMember_428954292C2951D1634E002F9CA6B9AA_verboseLabel_en-US" xlink:label="lab_itw_InvestmentContractsWithInsuranceCompaniesMember_428954292C2951D1634E002F9CA6B9AA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Fixed income securities, investment contracts with insurance companies </link:label>
<link:label id="lab_itw_InvestmentContractsWithInsuranceCompaniesMember_428954292C2951D1634E002F9CA6B9AA_label_en-US" xlink:label="lab_itw_InvestmentContractsWithInsuranceCompaniesMember_428954292C2951D1634E002F9CA6B9AA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Investment Contracts with Insurance Companies [Member] </link:label>
<link:label id="lab_itw_InvestmentContractsWithInsuranceCompaniesMember_428954292C2951D1634E002F9CA6B9AA_documentation_en-US" xlink:label="lab_itw_InvestmentContractsWithInsuranceCompaniesMember_428954292C2951D1634E002F9CA6B9AA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Investment contracts with insurance companies. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_InvestmentContractsWithInsuranceCompaniesMember" xlink:label="loc_itw_InvestmentContractsWithInsuranceCompaniesMember_428954292C2951D1634E002F9CA6B9AA" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanCommonCollectiveTrustMember_0F7F023987C3C3B92913002F9CA7A7CA_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanCommonCollectiveTrustMember_0F7F023987C3C3B92913002F9CA7A7CA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Commingled funds, collective trust funds </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanCommonCollectiveTrustMember_0F7F023987C3C3B92913002F9CA7A7CA_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanCommonCollectiveTrustMember_0F7F023987C3C3B92913002F9CA7A7CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Common Collective Trust [Member] </link:label>
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<link:label id="lab_itw_PartnershipsPrivateEquityInterestsMember_27CF6028F53AF724FDEC002F9CA7250A_verboseLabel_en-US" xlink:label="lab_itw_PartnershipsPrivateEquityInterestsMember_27CF6028F53AF724FDEC002F9CA7250A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Commingled funds, partnerships/private equity interests </link:label>
<link:label id="lab_itw_PartnershipsPrivateEquityInterestsMember_27CF6028F53AF724FDEC002F9CA7250A_label_en-US" xlink:label="lab_itw_PartnershipsPrivateEquityInterestsMember_27CF6028F53AF724FDEC002F9CA7250A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Partnerships Private Equity Interests [Member] </link:label>
<link:label id="lab_itw_PartnershipsPrivateEquityInterestsMember_27CF6028F53AF724FDEC002F9CA7250A_documentation_en-US" xlink:label="lab_itw_PartnershipsPrivateEquityInterestsMember_27CF6028F53AF724FDEC002F9CA7250A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Partnerships private equity interests. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_PartnershipsPrivateEquityInterestsMember" xlink:label="loc_itw_PartnershipsPrivateEquityInterestsMember_27CF6028F53AF724FDEC002F9CA7250A" xlink:type="locator"/>
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<link:label id="lab_itw_OtherPlanAssetMember_3A770BDB4FC48EB0FE38002F9CA77922_terseLabel_en-US" xlink:label="lab_itw_OtherPlanAssetMember_3A770BDB4FC48EB0FE38002F9CA77922" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Other </link:label>
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<link:label id="lab_itw_LifeInsurancePoliciesMember_0CEE9EB962B26DFFB1D6002F9CA7CBB9_verboseLabel_en-US" xlink:label="lab_itw_LifeInsurancePoliciesMember_0CEE9EB962B26DFFB1D6002F9CA7CBB9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Life insurance policies </link:label>
<link:label id="lab_itw_LifeInsurancePoliciesMember_0CEE9EB962B26DFFB1D6002F9CA7CBB9_label_en-US" xlink:label="lab_itw_LifeInsurancePoliciesMember_0CEE9EB962B26DFFB1D6002F9CA7CBB9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Life Insurance Policies [Member] </link:label>
<link:label id="lab_itw_LifeInsurancePoliciesMember_0CEE9EB962B26DFFB1D6002F9CA7CBB9_documentation_en-US" xlink:label="lab_itw_LifeInsurancePoliciesMember_0CEE9EB962B26DFFB1D6002F9CA7CBB9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Life insurance policies. </link:label>
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<link:label id="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_3F7882BB93D7F617A74D002F9CA82651_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueByFairValueHierarchyLevelAxis_3F7882BB93D7F617A74D002F9CA82651" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Fair Value of Plan Assets by Measurement [Axis] </link:label>
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<link:label id="lab_us-gaap_FairValueInputsLevel1Member_74C4C815F1B080ED8699002F9CA93142_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel1Member_74C4C815F1B080ED8699002F9CA93142" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Level 1 </link:label>
<link:label id="lab_us-gaap_FairValueInputsLevel1Member_74C4C815F1B080ED8699002F9CA93142_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel1Member_74C4C815F1B080ED8699002F9CA93142" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Inputs, Level 1 [Member] </link:label>
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<link:label id="lab_us-gaap_FairValueInputsLevel2Member_3D43A6D08357EED88D1A002F9CA9F094_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member_3D43A6D08357EED88D1A002F9CA9F094" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Level 2 </link:label>
<link:label id="lab_us-gaap_FairValueInputsLevel2Member_3D43A6D08357EED88D1A002F9CA9F094_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel2Member_3D43A6D08357EED88D1A002F9CA9F094" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Inputs, Level 2 [Member] </link:label>
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<link:label id="lab_us-gaap_FairValueInputsLevel3Member_E202AF9AE8298B6DFE3C002F9CA97C40_terseLabel_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member_E202AF9AE8298B6DFE3C002F9CA97C40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Level 3 </link:label>
<link:label id="lab_us-gaap_FairValueInputsLevel3Member_E202AF9AE8298B6DFE3C002F9CA97C40_label_en-US" xlink:label="lab_us-gaap_FairValueInputsLevel3Member_E202AF9AE8298B6DFE3C002F9CA97C40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Fair Value, Inputs, Level 3 [Member] </link:label>
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<link:label id="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_384624216DC20D8CF8D5002F9CA957D4_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_384624216DC20D8CF8D5002F9CA957D4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fair value of plan assets </link:label>
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<link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_33A07D30FDA20A9642D9002FB2CE672A_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_33A07D30FDA20A9642D9002FB2CE672A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock par value (in dollars per share) </link:label>
<link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_33A07D30FDA20A9642D9002FB2CE672A_label_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_33A07D30FDA20A9642D9002FB2CE672A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Par or Stated Value Per Share </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_33A07D30FDA20A9642D9002FB2CE672A" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CommonStockSharesIssued_E3A189AABF3FBF67C05C002FB2CF0489_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_E3A189AABF3FBF67C05C002FB2CF0489" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock issued (in shares) </link:label>
<link:label id="lab_us-gaap_CommonStockSharesIssued_E3A189AABF3FBF67C05C002FB2CF0489_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_E3A189AABF3FBF67C05C002FB2CF0489" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Shares, Issued </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_E3A189AABF3FBF67C05C002FB2CF0489" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CommonStockSharesOutstanding_138A546FEE6B036300DD002FB2CF13DD_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_138A546FEE6B036300DD002FB2CF13DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Common stock outstanding (in shares) </link:label>
<link:label id="lab_us-gaap_CommonStockSharesOutstanding_138A546FEE6B036300DD002FB2CF13DD_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_138A546FEE6B036300DD002FB2CF13DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Common Stock, Shares, Outstanding </link:label>
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<link:label id="lab_us-gaap_ValuationAllowanceByDeferredTaxAssetAxis_5C0282068A1CCE48F7D13ABF9758B4DC_terseLabel_en-US" xlink:label="lab_us-gaap_ValuationAllowanceByDeferredTaxAssetAxis_5C0282068A1CCE48F7D13ABF9758B4DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Valuation Allowance by Deferred Tax Asset [Axis] </link:label>
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<link:label id="lab_itw_EffectiveIncomeTaxRateReconciliationTaxBenefitfromStockCompensation_29023A50D50D8367B165FC57EEDF1CB0_label_en-US" xlink:label="lab_itw_EffectiveIncomeTaxRateReconciliationTaxBenefitfromStockCompensation_29023A50D50D8367B165FC57EEDF1CB0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Tax Benefit from Stock Compensation </link:label>
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<link:loc xlink:href="itw-20191231.xsd#itw_EffectiveIncomeTaxRateReconciliationTaxBenefitfromStockCompensation" xlink:label="loc_itw_EffectiveIncomeTaxRateReconciliationTaxBenefitfromStockCompensation_29023A50D50D8367B165FC57EEDF1CB0" xlink:type="locator"/>
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<link:label id="lab_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_FDC7CC0D5ED51F16E3ABFC57EEDF5B45_label_en-US" xlink:label="lab_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments_FDC7CC0D5ED51F16E3ABFC57EEDF5B45" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Effective Income Tax Rate Reconciliation, Other Adjustments, Percent </link:label>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_3BECFE4DFAB435D6AFE6FC57EEDFC894" xlink:type="locator"/>
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<link:label id="lab_us-gaap_CreditFacilityAxis_8745B8FFC1A0D150AF023ABF965EEA34_label_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis_8745B8FFC1A0D150AF023ABF965EEA34" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Credit Facility [Axis] </link:label>
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<link:label id="lab_us-gaap_CreditFacilityDomain_B151AACF3E610191EF663ABF965E80E5_label_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_B151AACF3E610191EF663ABF965E80E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Credit Facility [Domain] </link:label>
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<link:label id="lab_us-gaap_LineOfCreditMember_E1E72C5E1A10B8F9047D3ABF965E025D_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditMember_E1E72C5E1A10B8F9047D3ABF965E025D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Line of Credit </link:label>
<link:label id="lab_us-gaap_LineOfCreditMember_E1E72C5E1A10B8F9047D3ABF965E025D_label_en-US" xlink:label="lab_us-gaap_LineOfCreditMember_E1E72C5E1A10B8F9047D3ABF965E025D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Line of Credit [Member] </link:label>
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<link:label id="lab_us-gaap_ShortTermDebtTypeAxis_599E6CED581C013347763ABF965F58E2_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_599E6CED581C013347763ABF965F58E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Short-term Debt, Type [Axis] </link:label>
<link:label id="lab_us-gaap_ShortTermDebtTypeAxis_599E6CED581C013347763ABF965F58E2_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_599E6CED581C013347763ABF965F58E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Short-term Debt, Type [Axis] </link:label>
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<link:label id="lab_us-gaap_ShortTermDebtTypeDomain_03B487D456961088BAB53ABF965F4255_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_03B487D456961088BAB53ABF965F4255" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Short-term Debt, Type [Domain] </link:label>
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<link:label id="lab_itw_NoteDueMay92021Member_19730A37584B0D9626053ABF9662B8CF_label_en-US" xlink:label="lab_itw_NoteDueMay92021Member_19730A37584B0D9626053ABF9662B8CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Note Due May 9, 2021 [Member] </link:label>
<link:label id="lab_itw_NoteDueMay92021Member_19730A37584B0D9626053ABF9662B8CF_documentation_en-US" xlink:label="lab_itw_NoteDueMay92021Member_19730A37584B0D9626053ABF9662B8CF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Note Due May 9, 2021 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_NoteDueMay92021Member" xlink:label="loc_itw_NoteDueMay92021Member_19730A37584B0D9626053ABF9662B8CF" xlink:type="locator"/>
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<link:label id="lab_itw_InternationalDebtFacilitiesMember_70493FECCB7C46D9729E3ABF96631DF8_terseLabel_en-US" xlink:label="lab_itw_InternationalDebtFacilitiesMember_70493FECCB7C46D9729E3ABF96631DF8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> International Debt Facilities </link:label>
<link:label id="lab_itw_InternationalDebtFacilitiesMember_70493FECCB7C46D9729E3ABF96631DF8_label_en-US" xlink:label="lab_itw_InternationalDebtFacilitiesMember_70493FECCB7C46D9729E3ABF96631DF8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> International Debt Facilities [Member] </link:label>
<link:label id="lab_itw_InternationalDebtFacilitiesMember_70493FECCB7C46D9729E3ABF96631DF8_documentation_en-US" xlink:label="lab_itw_InternationalDebtFacilitiesMember_70493FECCB7C46D9729E3ABF96631DF8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> International Debt Facilities [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_InternationalDebtFacilitiesMember" xlink:label="loc_itw_InternationalDebtFacilitiesMember_70493FECCB7C46D9729E3ABF96631DF8" xlink:type="locator"/>
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<link:label id="lab_itw_A0.25EuroNotesDueDecember52024Member_1DC0EECC928D1294936D3ABF9665A682_terseLabel_en-US" xlink:label="lab_itw_A0.25EuroNotesDueDecember52024Member_1DC0EECC928D1294936D3ABF9665A682" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 0.25% Euro notes due December 5, 2024 </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A0.25EuroNotesDueDecember52024Member" xlink:label="loc_itw_A0.25EuroNotesDueDecember52024Member_1DC0EECC928D1294936D3ABF9665A682" xlink:type="locator"/>
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<link:label id="lab_itw_EuroNotesIssuedJune2019Member_A4AC494D34C08F1303633ABF9665C304_terseLabel_en-US" xlink:label="lab_itw_EuroNotesIssuedJune2019Member_A4AC494D34C08F1303633ABF9665C304" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Euro Notes Issued June 2019 </link:label>
<link:label id="lab_itw_EuroNotesIssuedJune2019Member_A4AC494D34C08F1303633ABF9665C304_label_en-US" xlink:label="lab_itw_EuroNotesIssuedJune2019Member_A4AC494D34C08F1303633ABF9665C304" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Euro Notes Issued June 2019 [Member] </link:label>
<link:label id="lab_itw_EuroNotesIssuedJune2019Member_A4AC494D34C08F1303633ABF9665C304_documentation_en-US" xlink:label="lab_itw_EuroNotesIssuedJune2019Member_A4AC494D34C08F1303633ABF9665C304" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Euro Notes Issued June 2019 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_EuroNotesIssuedJune2019Member" xlink:label="loc_itw_EuroNotesIssuedJune2019Member_A4AC494D34C08F1303633ABF9665C304" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_EuroNotesIssuedJune2019Member_A4AC494D34C08F1303633ABF9665C304" xlink:to="lab_itw_EuroNotesIssuedJune2019Member_A4AC494D34C08F1303633ABF9665C304" xlink:type="arc"/>
<link:label id="lab_us-gaap_SeniorNotesMember_BB0CF6116728B52DB37F3ABF9666F760_terseLabel_en-US" xlink:label="lab_us-gaap_SeniorNotesMember_BB0CF6116728B52DB37F3ABF9666F760" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Senior Notes </link:label>
<link:label id="lab_us-gaap_SeniorNotesMember_BB0CF6116728B52DB37F3ABF9666F760_label_en-US" xlink:label="lab_us-gaap_SeniorNotesMember_BB0CF6116728B52DB37F3ABF9666F760" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Senior Notes [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SeniorNotesMember" xlink:label="loc_us-gaap_SeniorNotesMember_BB0CF6116728B52DB37F3ABF9666F760" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeniorNotesMember_BB0CF6116728B52DB37F3ABF9666F760" xlink:to="lab_us-gaap_SeniorNotesMember_BB0CF6116728B52DB37F3ABF9666F760" xlink:type="arc"/>
<link:label id="lab_us-gaap_LineOfCreditFacilityLineItems_7EE6E756F8C1D5C7E6703ABF96678F53_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityLineItems_7EE6E756F8C1D5C7E6703ABF96678F53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Line of Credit Facility [Line Items] </link:label>
<link:label id="lab_us-gaap_LineOfCreditFacilityLineItems_7EE6E756F8C1D5C7E6703ABF96678F53_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityLineItems_7EE6E756F8C1D5C7E6703ABF96678F53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Line of Credit Facility [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_7EE6E756F8C1D5C7E6703ABF96678F53" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_7EE6E756F8C1D5C7E6703ABF96678F53" xlink:to="lab_us-gaap_LineOfCreditFacilityLineItems_7EE6E756F8C1D5C7E6703ABF96678F53" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShortTermBorrowings_54616A50CCAE43F9054D3ABF9667767A_verboseLabel_en-US" xlink:label="lab_us-gaap_ShortTermBorrowings_54616A50CCAE43F9054D3ABF9667767A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Short term debt </link:label>
<link:label id="lab_us-gaap_ShortTermBorrowings_54616A50CCAE43F9054D3ABF9667767A_label_en-US" xlink:label="lab_us-gaap_ShortTermBorrowings_54616A50CCAE43F9054D3ABF9667767A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Short-term Debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermBorrowings" xlink:label="loc_us-gaap_ShortTermBorrowings_54616A50CCAE43F9054D3ABF9667767A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermBorrowings_54616A50CCAE43F9054D3ABF9667767A" xlink:to="lab_us-gaap_ShortTermBorrowings_54616A50CCAE43F9054D3ABF9667767A" xlink:type="arc"/>
<link:label id="lab_us-gaap_CommercialPaper_EF0C89289461FFEACCF73ABF96676EA0_terseLabel_en-US" xlink:label="lab_us-gaap_CommercialPaper_EF0C89289461FFEACCF73ABF96676EA0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Commercial paper </link:label>
<link:label id="lab_us-gaap_CommercialPaper_EF0C89289461FFEACCF73ABF96676EA0_label_en-US" xlink:label="lab_us-gaap_CommercialPaper_EF0C89289461FFEACCF73ABF96676EA0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Commercial Paper </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_CommercialPaper" xlink:label="loc_us-gaap_CommercialPaper_EF0C89289461FFEACCF73ABF96676EA0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommercialPaper_EF0C89289461FFEACCF73ABF96676EA0" xlink:to="lab_us-gaap_CommercialPaper_EF0C89289461FFEACCF73ABF96676EA0" xlink:type="arc"/>
<link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_2A1E5C8E5B4D956D151F3ABF9668D117_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_2A1E5C8E5B4D956D151F3ABF9668D117" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Line of credit, maximum borrowing capacity </link:label>
<link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_2A1E5C8E5B4D956D151F3ABF9668D117_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_2A1E5C8E5B4D956D151F3ABF9668D117" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Line of Credit Facility, Maximum Borrowing Capacity </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_2A1E5C8E5B4D956D151F3ABF9668D117" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_2A1E5C8E5B4D956D151F3ABF9668D117" xlink:to="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_2A1E5C8E5B4D956D151F3ABF9668D117" xlink:type="arc"/>
<link:label id="lab_us-gaap_DebtInstrumentTerm_0E64ABEC92DBF62722D13ABF9668DF3E_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm_0E64ABEC92DBF62722D13ABF9668DF3E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt Instrument, term </link:label>
<link:label id="lab_us-gaap_DebtInstrumentTerm_0E64ABEC92DBF62722D13ABF9668DF3E_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm_0E64ABEC92DBF62722D13ABF9668DF3E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Term </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:label="loc_us-gaap_DebtInstrumentTerm_0E64ABEC92DBF62722D13ABF9668DF3E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTerm_0E64ABEC92DBF62722D13ABF9668DF3E" xlink:to="lab_us-gaap_DebtInstrumentTerm_0E64ABEC92DBF62722D13ABF9668DF3E" xlink:type="arc"/>
<link:label id="lab_us-gaap_LineOfCredit_EBED604A144AFE68E87B3ABF96689A8F_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCredit_EBED604A144AFE68E87B3ABF96689A8F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Line of credit, amounts outstanding </link:label>
<link:label id="lab_us-gaap_LineOfCredit_EBED604A144AFE68E87B3ABF96689A8F_label_en-US" xlink:label="lab_us-gaap_LineOfCredit_EBED604A144AFE68E87B3ABF96689A8F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Long-term Line of Credit </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCredit" xlink:label="loc_us-gaap_LineOfCredit_EBED604A144AFE68E87B3ABF96689A8F" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCredit_EBED604A144AFE68E87B3ABF96689A8F" xlink:to="lab_us-gaap_LineOfCredit_EBED604A144AFE68E87B3ABF96689A8F" xlink:type="arc"/>
<link:label id="lab_us-gaap_ShortTermDebtWeightedAverageInterestRate_470734E6F017FC4CAAF23ABF9669ACBC_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtWeightedAverageInterestRate_470734E6F017FC4CAAF23ABF9669ACBC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Weighted average interest rate </link:label>
<link:label id="lab_us-gaap_ShortTermDebtWeightedAverageInterestRate_470734E6F017FC4CAAF23ABF9669ACBC_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtWeightedAverageInterestRate_470734E6F017FC4CAAF23ABF9669ACBC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Short-term Debt, Weighted Average Interest Rate, at Point in Time </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ShortTermDebtWeightedAverageInterestRate" xlink:label="loc_us-gaap_ShortTermDebtWeightedAverageInterestRate_470734E6F017FC4CAAF23ABF9669ACBC" xlink:type="locator"/>
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<link:label id="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_7421CAB2C3B0236037063ABF96692C89_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_7421CAB2C3B0236037063ABF96692C89" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Unused capacity under international debt facilities </link:label>
<link:label id="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_7421CAB2C3B0236037063ABF96692C89_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_7421CAB2C3B0236037063ABF96692C89" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Line of Credit Facility, Remaining Borrowing Capacity </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_7421CAB2C3B0236037063ABF96692C89" xlink:type="locator"/>
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<link:label id="lab_itw_DebtInstrumentPercentageOfFaceValue_61831673083A05B1C2423ABF9669C892_verboseLabel_en-US" xlink:label="lab_itw_DebtInstrumentPercentageOfFaceValue_61831673083A05B1C2423ABF9669C892" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Notes issued, percentage of face value </link:label>
<link:label id="lab_itw_DebtInstrumentPercentageOfFaceValue_61831673083A05B1C2423ABF9669C892_label_en-US" xlink:label="lab_itw_DebtInstrumentPercentageOfFaceValue_61831673083A05B1C2423ABF9669C892" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument Percentage of Face Value </link:label>
<link:label id="lab_itw_DebtInstrumentPercentageOfFaceValue_61831673083A05B1C2423ABF9669C892_documentation_en-US" xlink:label="lab_itw_DebtInstrumentPercentageOfFaceValue_61831673083A05B1C2423ABF9669C892" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debt instrument percentage of face value. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_DebtInstrumentPercentageOfFaceValue" xlink:label="loc_itw_DebtInstrumentPercentageOfFaceValue_61831673083A05B1C2423ABF9669C892" xlink:type="locator"/>
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<link:label id="lab_us-gaap_RepaymentsOfDebt_F7374A964EAB04CEDFCC3ABF9669A85F_terseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfDebt_F7374A964EAB04CEDFCC3ABF9669A85F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Repayments of debt </link:label>
<link:label id="lab_us-gaap_RepaymentsOfDebt_F7374A964EAB04CEDFCC3ABF9669A85F_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfDebt_F7374A964EAB04CEDFCC3ABF9669A85F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Repayments of Debt </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_RepaymentsOfDebt" xlink:label="loc_us-gaap_RepaymentsOfDebt_F7374A964EAB04CEDFCC3ABF9669A85F" xlink:type="locator"/>
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<link:label id="lab_itw_DebtInstrumentFaceValuePercentage_55001896BB71AA728CCF3ABF966A101A_terseLabel_en-US" xlink:label="lab_itw_DebtInstrumentFaceValuePercentage_55001896BB71AA728CCF3ABF966A101A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Debt instrument, face value, percentage </link:label>
<link:label id="lab_itw_DebtInstrumentFaceValuePercentage_55001896BB71AA728CCF3ABF966A101A_label_en-US" xlink:label="lab_itw_DebtInstrumentFaceValuePercentage_55001896BB71AA728CCF3ABF966A101A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Face Value, Percentage </link:label>
<link:label id="lab_itw_DebtInstrumentFaceValuePercentage_55001896BB71AA728CCF3ABF966A101A_documentation_en-US" xlink:label="lab_itw_DebtInstrumentFaceValuePercentage_55001896BB71AA728CCF3ABF966A101A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Debt Instrument, Face Value, Percentage </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_DebtInstrumentFaceValuePercentage" xlink:label="loc_itw_DebtInstrumentFaceValuePercentage_55001896BB71AA728CCF3ABF966A101A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_DebtInstrumentFaceValuePercentage_55001896BB71AA728CCF3ABF966A101A" xlink:to="lab_itw_DebtInstrumentFaceValuePercentage_55001896BB71AA728CCF3ABF966A101A" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_1DC6FCC37660EF37E8B64A6D20E35EAB_label_en-US" xlink:label="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_1DC6FCC37660EF37E8B64A6D20E35EAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Statement of Comprehensive Income [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:label="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_1DC6FCC37660EF37E8B64A6D20E35EAB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_1DC6FCC37660EF37E8B64A6D20E35EAB" xlink:to="lab_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_1DC6FCC37660EF37E8B64A6D20E35EAB" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_1AE5E9336DB1B0F7CC984A6D20E388DC_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_1AE5E9336DB1B0F7CC984A6D20E388DC" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss): </link:label>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_1AE5E9336DB1B0F7CC984A6D20E388DC_label_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_1AE5E9336DB1B0F7CC984A6D20E388DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Other Comprehensive Income (Loss), Net of Tax [Abstract] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_1AE5E9336DB1B0F7CC984A6D20E388DC" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_1AE5E9336DB1B0F7CC984A6D20E388DC" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract_1AE5E9336DB1B0F7CC984A6D20E388DC" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_44215E176155ED4F1BDB4A6D20E3F672_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_44215E176155ED4F1BDB4A6D20E3F672" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Foreign currency translation adjustments, net of tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_44215E176155ED4F1BDB4A6D20E3F672" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_44215E176155ED4F1BDB4A6D20E3F672" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_44215E176155ED4F1BDB4A6D20E3F672" xlink:type="arc"/>
<link:label id="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_E7068F611C718C854B0F4A6D20E4314B_negatedLabel_en-US" xlink:label="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_E7068F611C718C854B0F4A6D20E4314B" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US"> Pension and other postretirement benefit adjustments, net of tax </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_E7068F611C718C854B0F4A6D20E4314B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_E7068F611C718C854B0F4A6D20E4314B" xlink:to="lab_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_E7068F611C718C854B0F4A6D20E4314B" xlink:type="arc"/>
<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_3954F4FC1FAE03D5732B4A6D20E42276_totalLabel_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_3954F4FC1FAE03D5732B4A6D20E42276" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Comprehensive Income </link:label>
<link:label id="lab_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_3954F4FC1FAE03D5732B4A6D20E42276_label_en-US" xlink:label="lab_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_3954F4FC1FAE03D5732B4A6D20E42276" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_3954F4FC1FAE03D5732B4A6D20E42276" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_3954F4FC1FAE03D5732B4A6D20E42276" xlink:to="lab_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_3954F4FC1FAE03D5732B4A6D20E42276" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_BF4E9155345C0EE9710F222FCBD30D06_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_BF4E9155345C0EE9710F222FCBD30D06" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_BF4E9155345C0EE9710F222FCBD30D06_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_BF4E9155345C0EE9710F222FCBD30D06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_BF4E9155345C0EE9710F222FCBD30D06" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_BF4E9155345C0EE9710F222FCBD30D06" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_BF4E9155345C0EE9710F222FCBD30D06" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_20E4711B7A104E7DD736222FCBD4760D_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_20E4711B7A104E7DD736222FCBD4760D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2021 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_20E4711B7A104E7DD736222FCBD4760D_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_20E4711B7A104E7DD736222FCBD4760D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Two </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_20E4711B7A104E7DD736222FCBD4760D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_20E4711B7A104E7DD736222FCBD4760D" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_20E4711B7A104E7DD736222FCBD4760D" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E84BCD11C08ED1F396A6222FCBD4FB6B_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E84BCD11C08ED1F396A6222FCBD4FB6B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2022 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E84BCD11C08ED1F396A6222FCBD4FB6B_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E84BCD11C08ED1F396A6222FCBD4FB6B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Three </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E84BCD11C08ED1F396A6222FCBD4FB6B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E84BCD11C08ED1F396A6222FCBD4FB6B" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_E84BCD11C08ED1F396A6222FCBD4FB6B" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_06A5301022F2D1315DC4222FCBD4C4F7_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_06A5301022F2D1315DC4222FCBD4C4F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2023 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_06A5301022F2D1315DC4222FCBD4C4F7_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_06A5301022F2D1315DC4222FCBD4C4F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Four </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_06A5301022F2D1315DC4222FCBD4C4F7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_06A5301022F2D1315DC4222FCBD4C4F7" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_06A5301022F2D1315DC4222FCBD4C4F7" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_8AC51CC4FC365AE63B43222FCBD47006_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_8AC51CC4FC365AE63B43222FCBD47006" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2024 </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_8AC51CC4FC365AE63B43222FCBD47006_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_8AC51CC4FC365AE63B43222FCBD47006" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due Year Five </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_8AC51CC4FC365AE63B43222FCBD47006" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_8AC51CC4FC365AE63B43222FCBD47006" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive_8AC51CC4FC365AE63B43222FCBD47006" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_6A4232FE9526FF5EA399222FCBD51DDE_terseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_6A4232FE9526FF5EA399222FCBD51DDE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2025 and future years </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_6A4232FE9526FF5EA399222FCBD51DDE_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_6A4232FE9526FF5EA399222FCBD51DDE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due after Year Five </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_6A4232FE9526FF5EA399222FCBD51DDE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_6A4232FE9526FF5EA399222FCBD51DDE" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive_6A4232FE9526FF5EA399222FCBD51DDE" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_DE7B67849231825E4022222FCBD535EA_totalLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_DE7B67849231825E4022222FCBD535EA" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Total future minimum lease payments </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_DE7B67849231825E4022222FCBD535EA_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_DE7B67849231825E4022222FCBD535EA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Payments, Due </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_DE7B67849231825E4022222FCBD535EA" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_DE7B67849231825E4022222FCBD535EA" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_DE7B67849231825E4022222FCBD535EA" xlink:type="arc"/>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_4D1E86EC5DABB63D0132222FCBD58AE3_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_4D1E86EC5DABB63D0132222FCBD58AE3" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US"> Less: Imputed interest </link:label>
<link:label id="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_4D1E86EC5DABB63D0132222FCBD58AE3_label_en-US" xlink:label="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_4D1E86EC5DABB63D0132222FCBD58AE3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Lessee, Operating Lease, Liability, Undiscounted Excess Amount </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_4D1E86EC5DABB63D0132222FCBD58AE3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_4D1E86EC5DABB63D0132222FCBD58AE3" xlink:to="lab_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_4D1E86EC5DABB63D0132222FCBD58AE3" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLeaseLiability_5A1D48A1999C72A205CE222FCBD56887_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiability_5A1D48A1999C72A205CE222FCBD56887" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US"> Operating lease liability </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="loc_us-gaap_OperatingLeaseLiability_5A1D48A1999C72A205CE222FCBD56887" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingLeaseLiabilityCurrent_20B054F1F0FFF46BFC63222FCBD63C4D_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeaseLiabilityCurrent_20B054F1F0FFF46BFC63222FCBD63C4D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Less: Current portion of operating lease liability </link:label>
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<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_6B4B1A3292B7547BA0C4002FB01F987B" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_B5DD54B9A0D675C290D4002F999311D2_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_B5DD54B9A0D675C290D4002F999311D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Equity Investments </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_B5DD54B9A0D675C290D4002F999311D2_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_B5DD54B9A0D675C290D4002F999311D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Equity Securities [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanEquitySecuritiesMember" xlink:label="loc_us-gaap_DefinedBenefitPlanEquitySecuritiesMember_B5DD54B9A0D675C290D4002F999311D2" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanDebtSecurityMember_1DD2332737FC00A3D650002F9993DDCB_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanDebtSecurityMember_1DD2332737FC00A3D650002F9993DDCB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Fixed Income Investments </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanDebtSecurityMember_1DD2332737FC00A3D650002F9993DDCB_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanDebtSecurityMember_1DD2332737FC00A3D650002F9993DDCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Debt Security [Member] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanDebtSecurityMember" xlink:label="loc_us-gaap_DefinedBenefitPlanDebtSecurityMember_1DD2332737FC00A3D650002F9993DDCB" xlink:type="locator"/>
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<link:label id="lab_itw_OtherPlanAssetMember_246447FC96E1AEEED813002F99942623_verboseLabel_en-US" xlink:label="lab_itw_OtherPlanAssetMember_246447FC96E1AEEED813002F99942623" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Other Investment </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_OtherPlanAssetMember" xlink:label="loc_itw_OtherPlanAssetMember_246447FC96E1AEEED813002F99942623" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_OtherPlanAssetMember_246447FC96E1AEEED813002F99942623" xlink:to="lab_itw_OtherPlanAssetMember_246447FC96E1AEEED813002F99942623" xlink:type="arc"/>
<link:label id="lab_us-gaap_DefinedContributionPlanCostRecognized_FD66E1F07704646B1590002F99950614_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedContributionPlanCostRecognized_FD66E1F07704646B1590002F99950614" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Defined contribution plan expenses </link:label>
<link:label id="lab_us-gaap_DefinedContributionPlanCostRecognized_FD66E1F07704646B1590002F99950614_label_en-US" xlink:label="lab_us-gaap_DefinedContributionPlanCostRecognized_FD66E1F07704646B1590002F99950614" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Contribution Plan, Cost </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedContributionPlanCostRecognized" xlink:label="loc_us-gaap_DefinedContributionPlanCostRecognized_FD66E1F07704646B1590002F99950614" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_E461D379569B942DA967002F9995CBA9_terseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_E461D379569B942DA967002F9995CBA9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Target allocation percentage </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_E461D379569B942DA967002F9995CBA9_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_E461D379569B942DA967002F9995CBA9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Plan Assets, Target Allocation, Percentage </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage" xlink:label="loc_us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage_E461D379569B942DA967002F9995CBA9" xlink:type="locator"/>
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<link:label id="lab_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_26BB2899F2A9B559F1FE002F99953C06_verboseLabel_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_26BB2899F2A9B559F1FE002F99953C06" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Expected company contributions </link:label>
<link:label id="lab_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_26BB2899F2A9B559F1FE002F99953C06_label_en-US" xlink:label="lab_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_26BB2899F2A9B559F1FE002F99953C06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear_26BB2899F2A9B559F1FE002F99953C06" xlink:type="locator"/>
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<link:label id="lab_us-gaap_OperatingLossCarryforwardsTable_1795304D2BB3D102A83CFCA7EAFDE80C_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLossCarryforwardsTable_1795304D2BB3D102A83CFCA7EAFDE80C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Loss Carryforwards [Table] </link:label>
<link:label id="lab_us-gaap_OperatingLossCarryforwardsTable_1795304D2BB3D102A83CFCA7EAFDE80C_label_en-US" xlink:label="lab_us-gaap_OperatingLossCarryforwardsTable_1795304D2BB3D102A83CFCA7EAFDE80C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Loss Carryforwards [Table] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLossCarryforwardsTable" xlink:label="loc_us-gaap_OperatingLossCarryforwardsTable_1795304D2BB3D102A83CFCA7EAFDE80C" xlink:type="locator"/>
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<link:label id="lab_us-gaap_TaxPeriodAxis_158CA696328FF07288E4FCA7EAFDAA67_label_en-US" xlink:label="lab_us-gaap_TaxPeriodAxis_158CA696328FF07288E4FCA7EAFDAA67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Tax Period [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TaxPeriodAxis" xlink:label="loc_us-gaap_TaxPeriodAxis_158CA696328FF07288E4FCA7EAFDAA67" xlink:type="locator"/>
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<link:label id="lab_us-gaap_TaxPeriodDomain_A4B2B167478D98779502FCA7EAFD19EB_label_en-US" xlink:label="lab_us-gaap_TaxPeriodDomain_A4B2B167478D98779502FCA7EAFD19EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Tax Period [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_TaxPeriodDomain" xlink:label="loc_us-gaap_TaxPeriodDomain_A4B2B167478D98779502FCA7EAFD19EB" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TaxPeriodDomain_A4B2B167478D98779502FCA7EAFD19EB" xlink:to="lab_us-gaap_TaxPeriodDomain_A4B2B167478D98779502FCA7EAFD19EB" xlink:type="arc"/>
<link:label id="lab_itw_TwoThousandTwentyMember_AC138173FB85C55D0F42FCA7EAFE4B68_verboseLabel_en-US" xlink:label="lab_itw_TwoThousandTwentyMember_AC138173FB85C55D0F42FCA7EAFE4B68" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 2020 </link:label>
<link:label id="lab_itw_TwoThousandTwentyMember_AC138173FB85C55D0F42FCA7EAFE4B68_label_en-US" xlink:label="lab_itw_TwoThousandTwentyMember_AC138173FB85C55D0F42FCA7EAFE4B68" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Two Thousand Twenty [Member] </link:label>
<link:label id="lab_itw_TwoThousandTwentyMember_AC138173FB85C55D0F42FCA7EAFE4B68_documentation_en-US" xlink:label="lab_itw_TwoThousandTwentyMember_AC138173FB85C55D0F42FCA7EAFE4B68" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Two thousand twenty. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_TwoThousandTwentyMember" xlink:label="loc_itw_TwoThousandTwentyMember_AC138173FB85C55D0F42FCA7EAFE4B68" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_TwoThousandTwentyMember_AC138173FB85C55D0F42FCA7EAFE4B68" xlink:to="lab_itw_TwoThousandTwentyMember_AC138173FB85C55D0F42FCA7EAFE4B68" xlink:type="arc"/>
<link:label id="lab_itw_TwoThousandTwentyOneMember_6B8688A94649D048DA8DFCA7EAFE03FF_verboseLabel_en-US" xlink:label="lab_itw_TwoThousandTwentyOneMember_6B8688A94649D048DA8DFCA7EAFE03FF" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> 2021 </link:label>
<link:label id="lab_itw_TwoThousandTwentyOneMember_6B8688A94649D048DA8DFCA7EAFE03FF_label_en-US" xlink:label="lab_itw_TwoThousandTwentyOneMember_6B8688A94649D048DA8DFCA7EAFE03FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Two Thousand Twenty One [Member] </link:label>
<link:label id="lab_itw_TwoThousandTwentyOneMember_6B8688A94649D048DA8DFCA7EAFE03FF_documentation_en-US" xlink:label="lab_itw_TwoThousandTwentyOneMember_6B8688A94649D048DA8DFCA7EAFE03FF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Two thousand twenty one. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_TwoThousandTwentyOneMember" xlink:label="loc_itw_TwoThousandTwentyOneMember_6B8688A94649D048DA8DFCA7EAFE03FF" xlink:type="locator"/>
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<link:label id="lab_itw_TwoThousandTwentyTwoMember_5C3FC9BABB496CF389D6FCA7EAFE953C_terseLabel_en-US" xlink:label="lab_itw_TwoThousandTwentyTwoMember_5C3FC9BABB496CF389D6FCA7EAFE953C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2022 </link:label>
<link:label id="lab_itw_TwoThousandTwentyTwoMember_5C3FC9BABB496CF389D6FCA7EAFE953C_label_en-US" xlink:label="lab_itw_TwoThousandTwentyTwoMember_5C3FC9BABB496CF389D6FCA7EAFE953C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Two Thousand Twenty Two [Member] </link:label>
<link:label id="lab_itw_TwoThousandTwentyTwoMember_5C3FC9BABB496CF389D6FCA7EAFE953C_documentation_en-US" xlink:label="lab_itw_TwoThousandTwentyTwoMember_5C3FC9BABB496CF389D6FCA7EAFE953C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Two thousand twenty two. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_TwoThousandTwentyTwoMember" xlink:label="loc_itw_TwoThousandTwentyTwoMember_5C3FC9BABB496CF389D6FCA7EAFE953C" xlink:type="locator"/>
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<link:label id="lab_itw_TwoThousandTwentyThreeMember_903564AA746CF08F76B8FCA7EAFEF3E3_terseLabel_en-US" xlink:label="lab_itw_TwoThousandTwentyThreeMember_903564AA746CF08F76B8FCA7EAFEF3E3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2023 </link:label>
<link:label id="lab_itw_TwoThousandTwentyThreeMember_903564AA746CF08F76B8FCA7EAFEF3E3_label_en-US" xlink:label="lab_itw_TwoThousandTwentyThreeMember_903564AA746CF08F76B8FCA7EAFEF3E3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Two Thousand Twenty Three [Member] </link:label>
<link:label id="lab_itw_TwoThousandTwentyThreeMember_903564AA746CF08F76B8FCA7EAFEF3E3_documentation_en-US" xlink:label="lab_itw_TwoThousandTwentyThreeMember_903564AA746CF08F76B8FCA7EAFEF3E3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Two Thousand Twenty Three [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_TwoThousandTwentyThreeMember" xlink:label="loc_itw_TwoThousandTwentyThreeMember_903564AA746CF08F76B8FCA7EAFEF3E3" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_TwoThousandTwentyThreeMember_903564AA746CF08F76B8FCA7EAFEF3E3" xlink:to="lab_itw_TwoThousandTwentyThreeMember_903564AA746CF08F76B8FCA7EAFEF3E3" xlink:type="arc"/>
<link:label id="lab_itw_TwoThousandTwentyFourMember_636FB73307B37928CF58FCA7EAFE08D8_terseLabel_en-US" xlink:label="lab_itw_TwoThousandTwentyFourMember_636FB73307B37928CF58FCA7EAFE08D8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2024 </link:label>
<link:label id="lab_itw_TwoThousandTwentyFourMember_636FB73307B37928CF58FCA7EAFE08D8_label_en-US" xlink:label="lab_itw_TwoThousandTwentyFourMember_636FB73307B37928CF58FCA7EAFE08D8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Two Thousand Twenty Four [Member] </link:label>
<link:label id="lab_itw_TwoThousandTwentyFourMember_636FB73307B37928CF58FCA7EAFE08D8_documentation_en-US" xlink:label="lab_itw_TwoThousandTwentyFourMember_636FB73307B37928CF58FCA7EAFE08D8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Two Thousand Twenty Four [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_TwoThousandTwentyFourMember" xlink:label="loc_itw_TwoThousandTwentyFourMember_636FB73307B37928CF58FCA7EAFE08D8" xlink:type="locator"/>
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<link:label id="lab_itw_TwoThousandTwentyFiveTwoThousandFortyFiveMember_76A627FB2CE7B0ED3A56FCA7EAFFDBDD_terseLabel_en-US" xlink:label="lab_itw_TwoThousandTwentyFiveTwoThousandFortyFiveMember_76A627FB2CE7B0ED3A56FCA7EAFFDBDD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2025-2045 </link:label>
<link:label id="lab_itw_TwoThousandTwentyFiveTwoThousandFortyFiveMember_76A627FB2CE7B0ED3A56FCA7EAFFDBDD_label_en-US" xlink:label="lab_itw_TwoThousandTwentyFiveTwoThousandFortyFiveMember_76A627FB2CE7B0ED3A56FCA7EAFFDBDD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Two Thousand Twenty Five - Two Thousand Forty Five [Member] </link:label>
<link:label id="lab_itw_TwoThousandTwentyFiveTwoThousandFortyFiveMember_76A627FB2CE7B0ED3A56FCA7EAFFDBDD_documentation_en-US" xlink:label="lab_itw_TwoThousandTwentyFiveTwoThousandFortyFiveMember_76A627FB2CE7B0ED3A56FCA7EAFFDBDD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Two Thousand Twenty Five - Two Thousand Forty Five </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_TwoThousandTwentyFiveTwoThousandFortyFiveMember" xlink:label="loc_itw_TwoThousandTwentyFiveTwoThousandFortyFiveMember_76A627FB2CE7B0ED3A56FCA7EAFFDBDD" xlink:type="locator"/>
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<link:label id="lab_itw_DoNotExpireMember_83D21397FB1F8DBFA6D3FCA7EAFF7911_verboseLabel_en-US" xlink:label="lab_itw_DoNotExpireMember_83D21397FB1F8DBFA6D3FCA7EAFF7911" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US"> Do not expire </link:label>
<link:label id="lab_itw_DoNotExpireMember_83D21397FB1F8DBFA6D3FCA7EAFF7911_label_en-US" xlink:label="lab_itw_DoNotExpireMember_83D21397FB1F8DBFA6D3FCA7EAFF7911" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Do Not Expire [Member] </link:label>
<link:label id="lab_itw_DoNotExpireMember_83D21397FB1F8DBFA6D3FCA7EAFF7911_documentation_en-US" xlink:label="lab_itw_DoNotExpireMember_83D21397FB1F8DBFA6D3FCA7EAFF7911" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> Do not expire. </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_DoNotExpireMember" xlink:label="loc_itw_DoNotExpireMember_83D21397FB1F8DBFA6D3FCA7EAFF7911" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_DoNotExpireMember_83D21397FB1F8DBFA6D3FCA7EAFF7911" xlink:to="lab_itw_DoNotExpireMember_83D21397FB1F8DBFA6D3FCA7EAFF7911" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLossCarryforwardsLineItems_7DE93C0C5C6F66EF52D0FCA7EAFF477E_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLossCarryforwardsLineItems_7DE93C0C5C6F66EF52D0FCA7EAFF477E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Operating Loss Carryforwards [Line Items] </link:label>
<link:label id="lab_us-gaap_OperatingLossCarryforwardsLineItems_7DE93C0C5C6F66EF52D0FCA7EAFF477E_label_en-US" xlink:label="lab_us-gaap_OperatingLossCarryforwardsLineItems_7DE93C0C5C6F66EF52D0FCA7EAFF477E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Loss Carryforwards [Line Items] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLossCarryforwardsLineItems" xlink:label="loc_us-gaap_OperatingLossCarryforwardsLineItems_7DE93C0C5C6F66EF52D0FCA7EAFF477E" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLossCarryforwardsLineItems_7DE93C0C5C6F66EF52D0FCA7EAFF477E" xlink:to="lab_us-gaap_OperatingLossCarryforwardsLineItems_7DE93C0C5C6F66EF52D0FCA7EAFF477E" xlink:type="arc"/>
<link:label id="lab_us-gaap_OperatingLossCarryforwards_354C61EC0003BDA96F9FFCA7EAFF62C8_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLossCarryforwards_354C61EC0003BDA96F9FFCA7EAFF62C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Total gross carryforwards related to net operating losses </link:label>
<link:label id="lab_us-gaap_OperatingLossCarryforwards_354C61EC0003BDA96F9FFCA7EAFF62C8_label_en-US" xlink:label="lab_us-gaap_OperatingLossCarryforwards_354C61EC0003BDA96F9FFCA7EAFF62C8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Operating Loss Carryforwards </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_OperatingLossCarryforwards" xlink:label="loc_us-gaap_OperatingLossCarryforwards_354C61EC0003BDA96F9FFCA7EAFF62C8" xlink:type="locator"/>
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<link:label id="lab_dei_CoverAbstract_BE6F0AAC0CCC77C6FC263E61D261F3F0_label_en-US" xlink:label="lab_dei_CoverAbstract_BE6F0AAC0CCC77C6FC263E61D261F3F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Cover page. </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CoverAbstract" xlink:label="loc_dei_CoverAbstract_BE6F0AAC0CCC77C6FC263E61D261F3F0" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CoverAbstract_BE6F0AAC0CCC77C6FC263E61D261F3F0" xlink:to="lab_dei_CoverAbstract_BE6F0AAC0CCC77C6FC263E61D261F3F0" xlink:type="arc"/>
<link:label id="lab_dei_EntitiesTable_22EE3D7025F0C6B16C7C3E61D26138F8_terseLabel_en-US" xlink:label="lab_dei_EntitiesTable_22EE3D7025F0C6B16C7C3E61D26138F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entities [Table] </link:label>
<link:label id="lab_dei_EntitiesTable_22EE3D7025F0C6B16C7C3E61D26138F8_label_en-US" xlink:label="lab_dei_EntitiesTable_22EE3D7025F0C6B16C7C3E61D26138F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entities [Table] </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntitiesTable" xlink:label="loc_dei_EntitiesTable_22EE3D7025F0C6B16C7C3E61D26138F8" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntitiesTable_22EE3D7025F0C6B16C7C3E61D26138F8" xlink:to="lab_dei_EntitiesTable_22EE3D7025F0C6B16C7C3E61D26138F8" xlink:type="arc"/>
<link:label id="lab_us-gaap_StatementClassOfStockAxis_DBF0E9284D463D90560C3E61D26199EE_terseLabel_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_DBF0E9284D463D90560C3E61D26199EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Class of Stock [Axis] </link:label>
<link:label id="lab_us-gaap_StatementClassOfStockAxis_DBF0E9284D463D90560C3E61D26199EE_label_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_DBF0E9284D463D90560C3E61D26199EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Class of Stock [Axis] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_DBF0E9284D463D90560C3E61D26199EE" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementClassOfStockAxis_DBF0E9284D463D90560C3E61D26199EE" xlink:to="lab_us-gaap_StatementClassOfStockAxis_DBF0E9284D463D90560C3E61D26199EE" xlink:type="arc"/>
<link:label id="lab_us-gaap_ClassOfStockDomain_94DE5B9D0956AEA8283F3E61D2619C7D_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_94DE5B9D0956AEA8283F3E61D2619C7D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Class of Stock [Domain] </link:label>
<link:label id="lab_us-gaap_ClassOfStockDomain_94DE5B9D0956AEA8283F3E61D2619C7D_label_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_94DE5B9D0956AEA8283F3E61D2619C7D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Class of Stock [Domain] </link:label>
<link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2019/elts/us-gaap-2019-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_94DE5B9D0956AEA8283F3E61D2619C7D" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfStockDomain_94DE5B9D0956AEA8283F3E61D2619C7D" xlink:to="lab_us-gaap_ClassOfStockDomain_94DE5B9D0956AEA8283F3E61D2619C7D" xlink:type="arc"/>
<link:label id="lab_itw_A1.75EuroNotesdue2022Member_100ACE89B02C8FA1F8363E61D26111D1_terseLabel_en-US" xlink:label="lab_itw_A1.75EuroNotesdue2022Member_100ACE89B02C8FA1F8363E61D26111D1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 1.75% Euro Notes due 2022 </link:label>
<link:label id="lab_itw_A1.75EuroNotesdue2022Member_100ACE89B02C8FA1F8363E61D26111D1_label_en-US" xlink:label="lab_itw_A1.75EuroNotesdue2022Member_100ACE89B02C8FA1F8363E61D26111D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 1.75% Euro Notes due 2022 [Member] </link:label>
<link:label id="lab_itw_A1.75EuroNotesdue2022Member_100ACE89B02C8FA1F8363E61D26111D1_documentation_en-US" xlink:label="lab_itw_A1.75EuroNotesdue2022Member_100ACE89B02C8FA1F8363E61D26111D1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 1.75% Euro Notes due 2022 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A1.75EuroNotesdue2022Member" xlink:label="loc_itw_A1.75EuroNotesdue2022Member_100ACE89B02C8FA1F8363E61D26111D1" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A1.75EuroNotesdue2022Member_100ACE89B02C8FA1F8363E61D26111D1" xlink:to="lab_itw_A1.75EuroNotesdue2022Member_100ACE89B02C8FA1F8363E61D26111D1" xlink:type="arc"/>
<link:label id="lab_itw_A1.25EuroNotesdue2023Member_24E7F764F83EDB3625863E61D2615349_terseLabel_en-US" xlink:label="lab_itw_A1.25EuroNotesdue2023Member_24E7F764F83EDB3625863E61D2615349" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 1.25% Euro Notes due 2023 </link:label>
<link:label id="lab_itw_A1.25EuroNotesdue2023Member_24E7F764F83EDB3625863E61D2615349_label_en-US" xlink:label="lab_itw_A1.25EuroNotesdue2023Member_24E7F764F83EDB3625863E61D2615349" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 1.25% Euro Notes due 2023 [Member] </link:label>
<link:label id="lab_itw_A1.25EuroNotesdue2023Member_24E7F764F83EDB3625863E61D2615349_documentation_en-US" xlink:label="lab_itw_A1.25EuroNotesdue2023Member_24E7F764F83EDB3625863E61D2615349" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 1.25% Euro Notes due 2023 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A1.25EuroNotesdue2023Member" xlink:label="loc_itw_A1.25EuroNotesdue2023Member_24E7F764F83EDB3625863E61D2615349" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A1.25EuroNotesdue2023Member_24E7F764F83EDB3625863E61D2615349" xlink:to="lab_itw_A1.25EuroNotesdue2023Member_24E7F764F83EDB3625863E61D2615349" xlink:type="arc"/>
<link:label id="lab_itw_A0.250EuroNotesdue2024Member_01BDECDF26DE4DE5366D3E61D261983A_terseLabel_en-US" xlink:label="lab_itw_A0.250EuroNotesdue2024Member_01BDECDF26DE4DE5366D3E61D261983A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 0.250% Euro Notes due 2024 </link:label>
<link:label id="lab_itw_A0.250EuroNotesdue2024Member_01BDECDF26DE4DE5366D3E61D261983A_label_en-US" xlink:label="lab_itw_A0.250EuroNotesdue2024Member_01BDECDF26DE4DE5366D3E61D261983A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 0.250% Euro Notes due 2024 [Member] </link:label>
<link:label id="lab_itw_A0.250EuroNotesdue2024Member_01BDECDF26DE4DE5366D3E61D261983A_documentation_en-US" xlink:label="lab_itw_A0.250EuroNotesdue2024Member_01BDECDF26DE4DE5366D3E61D261983A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 0.250% Euro Notes due 2024 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A0.250EuroNotesdue2024Member" xlink:label="loc_itw_A0.250EuroNotesdue2024Member_01BDECDF26DE4DE5366D3E61D261983A" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A0.250EuroNotesdue2024Member_01BDECDF26DE4DE5366D3E61D261983A" xlink:to="lab_itw_A0.250EuroNotesdue2024Member_01BDECDF26DE4DE5366D3E61D261983A" xlink:type="arc"/>
<link:label id="lab_itw_A0.625EuroNotesdue2027Member_3FCB5C1AD6C6E73891753E61D26149A7_terseLabel_en-US" xlink:label="lab_itw_A0.625EuroNotesdue2027Member_3FCB5C1AD6C6E73891753E61D26149A7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 0.625% Euro Notes due 2027 </link:label>
<link:label id="lab_itw_A0.625EuroNotesdue2027Member_3FCB5C1AD6C6E73891753E61D26149A7_label_en-US" xlink:label="lab_itw_A0.625EuroNotesdue2027Member_3FCB5C1AD6C6E73891753E61D26149A7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 0.625% Euro Notes due 2027 [Member] </link:label>
<link:label id="lab_itw_A0.625EuroNotesdue2027Member_3FCB5C1AD6C6E73891753E61D26149A7_documentation_en-US" xlink:label="lab_itw_A0.625EuroNotesdue2027Member_3FCB5C1AD6C6E73891753E61D26149A7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 0.625% Euro Notes due 2027 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A0.625EuroNotesdue2027Member" xlink:label="loc_itw_A0.625EuroNotesdue2027Member_3FCB5C1AD6C6E73891753E61D26149A7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A0.625EuroNotesdue2027Member_3FCB5C1AD6C6E73891753E61D26149A7" xlink:to="lab_itw_A0.625EuroNotesdue2027Member_3FCB5C1AD6C6E73891753E61D26149A7" xlink:type="arc"/>
<link:label id="lab_itw_A2.125EuroNotesdue2030Member_5887CC96E9DCAB77DF2D3E61D2614ACF_terseLabel_en-US" xlink:label="lab_itw_A2.125EuroNotesdue2030Member_5887CC96E9DCAB77DF2D3E61D2614ACF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 2.125% Euro Notes due 2030 </link:label>
<link:label id="lab_itw_A2.125EuroNotesdue2030Member_5887CC96E9DCAB77DF2D3E61D2614ACF_label_en-US" xlink:label="lab_itw_A2.125EuroNotesdue2030Member_5887CC96E9DCAB77DF2D3E61D2614ACF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 2.125% Euro Notes due 2030 [Member] </link:label>
<link:label id="lab_itw_A2.125EuroNotesdue2030Member_5887CC96E9DCAB77DF2D3E61D2614ACF_documentation_en-US" xlink:label="lab_itw_A2.125EuroNotesdue2030Member_5887CC96E9DCAB77DF2D3E61D2614ACF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 2.125% Euro Notes due 2030 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A2.125EuroNotesdue2030Member" xlink:label="loc_itw_A2.125EuroNotesdue2030Member_5887CC96E9DCAB77DF2D3E61D2614ACF" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A2.125EuroNotesdue2030Member_5887CC96E9DCAB77DF2D3E61D2614ACF" xlink:to="lab_itw_A2.125EuroNotesdue2030Member_5887CC96E9DCAB77DF2D3E61D2614ACF" xlink:type="arc"/>
<link:label id="lab_itw_A1.00EuroNotesdue2031Member_4E7542E616A8BB5200903E61D261ACF7_terseLabel_en-US" xlink:label="lab_itw_A1.00EuroNotesdue2031Member_4E7542E616A8BB5200903E61D261ACF7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 1.00% Euro Notes due 2031 </link:label>
<link:label id="lab_itw_A1.00EuroNotesdue2031Member_4E7542E616A8BB5200903E61D261ACF7_label_en-US" xlink:label="lab_itw_A1.00EuroNotesdue2031Member_4E7542E616A8BB5200903E61D261ACF7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 1.00% Euro Notes due 2031 [Member] </link:label>
<link:label id="lab_itw_A1.00EuroNotesdue2031Member_4E7542E616A8BB5200903E61D261ACF7_documentation_en-US" xlink:label="lab_itw_A1.00EuroNotesdue2031Member_4E7542E616A8BB5200903E61D261ACF7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 1.00% Euro Notes due 2031 [Member] </link:label>
<link:loc xlink:href="itw-20191231.xsd#itw_A1.00EuroNotesdue2031Member" xlink:label="loc_itw_A1.00EuroNotesdue2031Member_4E7542E616A8BB5200903E61D261ACF7" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_itw_A1.00EuroNotesdue2031Member_4E7542E616A8BB5200903E61D261ACF7" xlink:to="lab_itw_A1.00EuroNotesdue2031Member_4E7542E616A8BB5200903E61D261ACF7" xlink:type="arc"/>
<link:label id="lab_itw_A3.00EuroNotesdue2034Member_11D11CC976631A8C7E653E61D26143CF_terseLabel_en-US" xlink:label="lab_itw_A3.00EuroNotesdue2034Member_11D11CC976631A8C7E653E61D26143CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> 3.00% Euro Notes due 2034 </link:label>
<link:label id="lab_itw_A3.00EuroNotesdue2034Member_11D11CC976631A8C7E653E61D26143CF_label_en-US" xlink:label="lab_itw_A3.00EuroNotesdue2034Member_11D11CC976631A8C7E653E61D26143CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> 3.00% Euro Notes due 2034 [Member] </link:label>
<link:label id="lab_itw_A3.00EuroNotesdue2034Member_11D11CC976631A8C7E653E61D26143CF_documentation_en-US" xlink:label="lab_itw_A3.00EuroNotesdue2034Member_11D11CC976631A8C7E653E61D26143CF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US"> 3.00% Euro Notes due 2034 [Member] </link:label>
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<link:label id="lab_dei_EntityInformationLineItems_450C9E74A9E60D8B43C33E61D2614ECA_terseLabel_en-US" xlink:label="lab_dei_EntityInformationLineItems_450C9E74A9E60D8B43C33E61D2614ECA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Information [Line Items] </link:label>
<link:label id="lab_dei_EntityInformationLineItems_450C9E74A9E60D8B43C33E61D2614ECA_label_en-US" xlink:label="lab_dei_EntityInformationLineItems_450C9E74A9E60D8B43C33E61D2614ECA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Information [Line Items] </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityInformationLineItems" xlink:label="loc_dei_EntityInformationLineItems_450C9E74A9E60D8B43C33E61D2614ECA" xlink:type="locator"/>
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<link:label id="lab_dei_DocumentType_799ED286507BDCAE06F43E61D261D7FC_label_en-US" xlink:label="lab_dei_DocumentType_799ED286507BDCAE06F43E61D261D7FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Type </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_799ED286507BDCAE06F43E61D261D7FC" xlink:type="locator"/>
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<link:label id="lab_dei_DocumentAnnualReport_F9C6AEAA43C279960F3A3E61D2610181_terseLabel_en-US" xlink:label="lab_dei_DocumentAnnualReport_F9C6AEAA43C279960F3A3E61D2610181" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Annual Report </link:label>
<link:label id="lab_dei_DocumentAnnualReport_F9C6AEAA43C279960F3A3E61D2610181_label_en-US" xlink:label="lab_dei_DocumentAnnualReport_F9C6AEAA43C279960F3A3E61D2610181" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Annual Report </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentAnnualReport" xlink:label="loc_dei_DocumentAnnualReport_F9C6AEAA43C279960F3A3E61D2610181" xlink:type="locator"/>
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<link:label id="lab_dei_DocumentPeriodEndDate_8BC43CB140E2E60B65A23E61D261865B_label_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_8BC43CB140E2E60B65A23E61D261865B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Period End Date </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_8BC43CB140E2E60B65A23E61D261865B" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentPeriodEndDate_8BC43CB140E2E60B65A23E61D261865B" xlink:to="lab_dei_DocumentPeriodEndDate_8BC43CB140E2E60B65A23E61D261865B" xlink:type="arc"/>
<link:label id="lab_dei_DocumentTransitionReport_47469A66A00826C734FD3E61D2619ABA_terseLabel_en-US" xlink:label="lab_dei_DocumentTransitionReport_47469A66A00826C734FD3E61D2619ABA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Document Transition Report </link:label>
<link:label id="lab_dei_DocumentTransitionReport_47469A66A00826C734FD3E61D2619ABA_label_en-US" xlink:label="lab_dei_DocumentTransitionReport_47469A66A00826C734FD3E61D2619ABA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Document Transition Report </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_DocumentTransitionReport" xlink:label="loc_dei_DocumentTransitionReport_47469A66A00826C734FD3E61D2619ABA" xlink:type="locator"/>
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<link:label id="lab_dei_EntityFileNumber_35FE9E28ACB6494085433E61D2618E7D_terseLabel_en-US" xlink:label="lab_dei_EntityFileNumber_35FE9E28ACB6494085433E61D2618E7D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity File Number </link:label>
<link:label id="lab_dei_EntityFileNumber_35FE9E28ACB6494085433E61D2618E7D_label_en-US" xlink:label="lab_dei_EntityFileNumber_35FE9E28ACB6494085433E61D2618E7D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity File Number </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityFileNumber" xlink:label="loc_dei_EntityFileNumber_35FE9E28ACB6494085433E61D2618E7D" xlink:type="locator"/>
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<link:label id="lab_dei_EntityRegistrantName_A4B4B4C3BC7D5389C93E3E61D2613773_terseLabel_en-US" xlink:label="lab_dei_EntityRegistrantName_A4B4B4C3BC7D5389C93E3E61D2613773" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Registrant Name </link:label>
<link:label id="lab_dei_EntityRegistrantName_A4B4B4C3BC7D5389C93E3E61D2613773_label_en-US" xlink:label="lab_dei_EntityRegistrantName_A4B4B4C3BC7D5389C93E3E61D2613773" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Registrant Name </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_A4B4B4C3BC7D5389C93E3E61D2613773" xlink:type="locator"/>
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<link:label id="lab_dei_EntityIncorporationStateCountryCode_F3D61B3E0484660C089B3E61D26124B4_terseLabel_en-US" xlink:label="lab_dei_EntityIncorporationStateCountryCode_F3D61B3E0484660C089B3E61D26124B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Incorporation, State or Country Code </link:label>
<link:label id="lab_dei_EntityIncorporationStateCountryCode_F3D61B3E0484660C089B3E61D26124B4_label_en-US" xlink:label="lab_dei_EntityIncorporationStateCountryCode_F3D61B3E0484660C089B3E61D26124B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Incorporation, State or Country Code </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityIncorporationStateCountryCode" xlink:label="loc_dei_EntityIncorporationStateCountryCode_F3D61B3E0484660C089B3E61D26124B4" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityIncorporationStateCountryCode_F3D61B3E0484660C089B3E61D26124B4" xlink:to="lab_dei_EntityIncorporationStateCountryCode_F3D61B3E0484660C089B3E61D26124B4" xlink:type="arc"/>
<link:label id="lab_dei_EntityTaxIdentificationNumber_AE2BC2253A3D0DE630413E61D261BE78_terseLabel_en-US" xlink:label="lab_dei_EntityTaxIdentificationNumber_AE2BC2253A3D0DE630413E61D261BE78" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Tax Identification Number </link:label>
<link:label id="lab_dei_EntityTaxIdentificationNumber_AE2BC2253A3D0DE630413E61D261BE78_label_en-US" xlink:label="lab_dei_EntityTaxIdentificationNumber_AE2BC2253A3D0DE630413E61D261BE78" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Tax Identification Number </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityTaxIdentificationNumber" xlink:label="loc_dei_EntityTaxIdentificationNumber_AE2BC2253A3D0DE630413E61D261BE78" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityTaxIdentificationNumber_AE2BC2253A3D0DE630413E61D261BE78" xlink:to="lab_dei_EntityTaxIdentificationNumber_AE2BC2253A3D0DE630413E61D261BE78" xlink:type="arc"/>
<link:label id="lab_dei_EntityAddressAddressLine1_BE47CB9B13A4351A69E73E61D261D98C_terseLabel_en-US" xlink:label="lab_dei_EntityAddressAddressLine1_BE47CB9B13A4351A69E73E61D261D98C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Address, Address Line One </link:label>
<link:label id="lab_dei_EntityAddressAddressLine1_BE47CB9B13A4351A69E73E61D261D98C_label_en-US" xlink:label="lab_dei_EntityAddressAddressLine1_BE47CB9B13A4351A69E73E61D261D98C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Address, Address Line One </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressAddressLine1" xlink:label="loc_dei_EntityAddressAddressLine1_BE47CB9B13A4351A69E73E61D261D98C" xlink:type="locator"/>
<link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityAddressAddressLine1_BE47CB9B13A4351A69E73E61D261D98C" xlink:to="lab_dei_EntityAddressAddressLine1_BE47CB9B13A4351A69E73E61D261D98C" xlink:type="arc"/>
<link:label id="lab_dei_EntityAddressCityOrTown_412B3542A4FF979064833E61D261D3B1_terseLabel_en-US" xlink:label="lab_dei_EntityAddressCityOrTown_412B3542A4FF979064833E61D261D3B1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Address, City or Town </link:label>
<link:label id="lab_dei_EntityAddressCityOrTown_412B3542A4FF979064833E61D261D3B1_label_en-US" xlink:label="lab_dei_EntityAddressCityOrTown_412B3542A4FF979064833E61D261D3B1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Address, City or Town </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressCityOrTown" xlink:label="loc_dei_EntityAddressCityOrTown_412B3542A4FF979064833E61D261D3B1" xlink:type="locator"/>
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<link:label id="lab_dei_EntityAddressStateOrProvince_F53568EB64B940382F843E61D2708364_terseLabel_en-US" xlink:label="lab_dei_EntityAddressStateOrProvince_F53568EB64B940382F843E61D2708364" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Address, State or Province </link:label>
<link:label id="lab_dei_EntityAddressStateOrProvince_F53568EB64B940382F843E61D2708364_label_en-US" xlink:label="lab_dei_EntityAddressStateOrProvince_F53568EB64B940382F843E61D2708364" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Address, State or Province </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressStateOrProvince" xlink:label="loc_dei_EntityAddressStateOrProvince_F53568EB64B940382F843E61D2708364" xlink:type="locator"/>
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<link:label id="lab_dei_EntityAddressPostalZipCode_21F3026BFBFF6749E9733E61D270646E_terseLabel_en-US" xlink:label="lab_dei_EntityAddressPostalZipCode_21F3026BFBFF6749E9733E61D270646E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Entity Address, Postal Zip Code </link:label>
<link:label id="lab_dei_EntityAddressPostalZipCode_21F3026BFBFF6749E9733E61D270646E_label_en-US" xlink:label="lab_dei_EntityAddressPostalZipCode_21F3026BFBFF6749E9733E61D270646E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Address, Postal Zip Code </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_EntityAddressPostalZipCode" xlink:label="loc_dei_EntityAddressPostalZipCode_21F3026BFBFF6749E9733E61D270646E" xlink:type="locator"/>
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<link:label id="lab_dei_CityAreaCode_7963028D483953B9F00D3E61D270AA49_terseLabel_en-US" xlink:label="lab_dei_CityAreaCode_7963028D483953B9F00D3E61D270AA49" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> City Area Code </link:label>
<link:label id="lab_dei_CityAreaCode_7963028D483953B9F00D3E61D270AA49_label_en-US" xlink:label="lab_dei_CityAreaCode_7963028D483953B9F00D3E61D270AA49" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> City Area Code </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_CityAreaCode" xlink:label="loc_dei_CityAreaCode_7963028D483953B9F00D3E61D270AA49" xlink:type="locator"/>
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<link:label id="lab_dei_LocalPhoneNumber_82AAD3A90B91514880443E61D270A4AA_terseLabel_en-US" xlink:label="lab_dei_LocalPhoneNumber_82AAD3A90B91514880443E61D270A4AA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Local Phone Number </link:label>
<link:label id="lab_dei_LocalPhoneNumber_82AAD3A90B91514880443E61D270A4AA_label_en-US" xlink:label="lab_dei_LocalPhoneNumber_82AAD3A90B91514880443E61D270A4AA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Local Phone Number </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_LocalPhoneNumber" xlink:label="loc_dei_LocalPhoneNumber_82AAD3A90B91514880443E61D270A4AA" xlink:type="locator"/>
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<link:label id="lab_dei_Security12bTitle_23D705DCA2480AAA20CC3E61D270CBD8_terseLabel_en-US" xlink:label="lab_dei_Security12bTitle_23D705DCA2480AAA20CC3E61D270CBD8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Title of 12(b) Security </link:label>
<link:label id="lab_dei_Security12bTitle_23D705DCA2480AAA20CC3E61D270CBD8_label_en-US" xlink:label="lab_dei_Security12bTitle_23D705DCA2480AAA20CC3E61D270CBD8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Title of 12(b) Security </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_Security12bTitle" xlink:label="loc_dei_Security12bTitle_23D705DCA2480AAA20CC3E61D270CBD8" xlink:type="locator"/>
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<link:label id="lab_dei_TradingSymbol_7B02EB561753AB5977C33E61D270DD01_terseLabel_en-US" xlink:label="lab_dei_TradingSymbol_7B02EB561753AB5977C33E61D270DD01" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Trading Symbol </link:label>
<link:label id="lab_dei_TradingSymbol_7B02EB561753AB5977C33E61D270DD01_label_en-US" xlink:label="lab_dei_TradingSymbol_7B02EB561753AB5977C33E61D270DD01" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Trading Symbol </link:label>
<link:loc xlink:href="https://xbrl.sec.gov/dei/2019/dei-2019-01-31.xsd#dei_TradingSymbol" xlink:label="loc_dei_TradingSymbol_7B02EB561753AB5977C33E61D270DD01" xlink:type="locator"/>
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<link:label id="lab_dei_SecurityExchangeName_51BC305C09B7099209A23E61D2706D95_terseLabel_en-US" xlink:label="lab_dei_SecurityExchangeName_51BC305C09B7099209A23E61D2706D95" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US"> Security Exchange Name </link:label>
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<link:label id="lab_dei_EntityWellKnownSeasonedIssuer_12A9C62F3DDFE6AEB61A3E61D27053D0_label_en-US" xlink:label="lab_dei_EntityWellKnownSeasonedIssuer_12A9C62F3DDFE6AEB61A3E61D27053D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US"> Entity Well-known Seasoned Issuer </link:label>
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