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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 EE3bVuDm2HfT4GKo1tANyFs6jMTuq75R4luwfo6yjDSSC/DO+vRxA1L/qipKooyq
 ZXuwo/4f+GaL7fdmoPOt/A==

<SEC-DOCUMENT>0001209191-04-000777.txt : 20040105
<SEC-HEADER>0001209191-04-000777.hdr.sgml : 20040105
<ACCEPTANCE-DATETIME>20040105164840
ACCESSION NUMBER:		0001209191-04-000777
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20040102
FILED AS OF DATE:		20040105

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CALLAHAN ROBERT T
		CENTRAL INDEX KEY:			0001180962

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-04797
		FILM NUMBER:		04505745

	BUSINESS ADDRESS:	
		STREET 1:		ILLINOIS TOOL WORKS INC
		STREET 2:		3600 WEST LAKE AVE
		CITY:			GLENVIEW
		STATE:			IL
		ZIP:			60068
		BUSINESS PHONE:		8476574077

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ILLINOIS TOOL WORKS INC
		CENTRAL INDEX KEY:			0000049826
		STANDARD INDUSTRIAL CLASSIFICATION:	GENERAL INDUSTRIAL MACHINERY & EQUIPMENT [3560]
		IRS NUMBER:				361258310
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3600 W LAKE AVE
		CITY:			GLENVIEW
		STATE:			IL
		ZIP:			60025-5811
		BUSINESS PHONE:		8476574106

	MAIL ADDRESS:	
		STREET 1:		3600 WEST LAKE AVENUE
		CITY:			GLENVIEW
		STATE:			IL
		ZIP:			60025-5811
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>c81840-01rtc.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2004-01-02</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000049826</issuerCik><issuerName>ILLINOIS TOOL WORKS INC</issuerName>        <issuerTradingSymbol>ITW</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001180962</rptOwnerCik><rptOwnerName>CALLAHAN ROBERT T</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1></rptOwnerStreet1><rptOwnerStreet2></rptOwnerStreet2><rptOwnerCity></rptOwnerCity><rptOwnerState></rptOwnerState><rptOwnerZipCode></rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>Sr. V. P. Human Resources</officerTitle></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivat
iveTransaction><securityTitle><value>Common Stock</value><footnoteId id="F1" /><footnoteId id="F2" /><footnoteId id="F3" /></securityTitle><transactionDate><value>2004-01-02</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>5000</value></transactionShares><transactionPricePerShare><value>83.315</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>11023</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><derivativeTable><derivativeTransaction><securityTitle><value>Employee Stock Option</value><footnoteId id="F4" /></se
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ue></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>6000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction><derivativeTransaction><securityTitle><value>Employee Stock Option</value><footnoteId id="F4" /></securityTitle><conversionOrExercisePrice><value>65.50</value></conversionOrExercisePrice><transactionDate><value>1999-12-17</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>7000</value></transactionShares><transactionPricePerShare><value>65.50</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2000-12-17</value></exe
rciseDate><expirationDate><value>2009-12-17</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>7000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>7000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction><derivativeTransaction><securityTitle><value>Employee Stock Option</value><footnoteId id="F4" /></securityTitle><conversionOrExercisePrice><value>55.875</value></conversionOrExercisePrice><transactionDate><value>2000-12-15</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>17000</value></transactionShares><transactio
nPricePerShare><value>55.875</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2001-12-15</value></exerciseDate><expirationDate><value>2010-12-15</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>17000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>17000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction><derivativeTransaction><securityTitle><value>Employee Stock Option</value><footnoteId id="F4" /></securityTitle><conversionOrExercisePrice><value>62.25</value></conversionOrExercisePrice><transactionDate><value>2001-12-14</value></transactionDate><transactionCoding><transactionFormType
>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>15000</value></transactionShares><transactionPricePerShare><value>62.25</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2002-12-14</value></exerciseDate><expirationDate><value>2011-12-14</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>15000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>15000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Includes shares of restricte
d stock vesting over 3 year period:  12/16/2003, 12/16/2004, 12/16/2005</footnote><footnote id="F2">Includes 1,523 shares of common stock allocated to my account in the Illinois Tool Works Inc. Savings &amp; Investment Plan -- Information reported as of December 12, 2003.</footnote><footnote id="F3">Grant of 5,000 shares of Restricted Stock January 2, 2004 Vesting Over 3 year Period:  12/16/2004, 12/16/2005, 12/18/2006</footnote><footnote id="F4">Options vest in four equal annual installments beginning one year from date of grant.</footnote></footnotes><ownerSignature><signatureName> Robert T. Callahan by S. S. Hudnut, Sr. V.P., Gen. Counsel &amp; Secretary   Attorney-In-Fact   POA on File</signatureName><signatureDate>2004-01-05</signatureDate></ownerSignature></ownershipDocument>

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