-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 3NX9T9oH2IwXOLM2Y/l+jQ==

<SEC-DOCUMENT>0001209191-04-058372.txt : 20041217
<SEC-HEADER>0001209191-04-058372.hdr.sgml : 20041217
<ACCEPTANCE-DATETIME>20041217150132
ACCESSION NUMBER:		0001209191-04-058372
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20041216
FILED AS OF DATE:		20041217
DATE AS OF CHANGE:		20041217

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			RINGLER JAMES M
		CENTRAL INDEX KEY:			0001009139
		STANDARD INDUSTRIAL CLASSIFICATION:	PRIMARY PRODUCTION OF ALUMINUM [3334]
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-04797
		FILM NUMBER:		041211167

	BUSINESS ADDRESS:	
		STREET 1:		CORN PRODUCTS INTERNATIONAL INC
		STREET 2:		5 WESTBROOK CORPORATE CENTER
		CITY:			WESTCHESTER
		STATE:			IL
		ZIP:			60154
		BUSINESS PHONE:		7085512600

	MAIL ADDRESS:	
		STREET 1:		CORN PRODUCTS INTERNATIONAL
		STREET 2:		5 WESTBROOK CORPORATE CENTER
		CITY:			WESTCHESTER
		STATE:			IL
		ZIP:			60154
</SEC-HEADER>
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<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
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        <issuerName>ILLINOIS TOOL WORKS INC</issuerName>
        <issuerTradingSymbol>ITW</issuerTradingSymbol>
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            <rptOwnerName>RINGLER JAMES M</rptOwnerName>
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            <rptOwnerStreet1>CORN PRODUCTS INTERNATIONAL</rptOwnerStreet1>
            <rptOwnerStreet2>5 WESTBROOK CORPORATE CENTER</rptOwnerStreet2>
            <rptOwnerCity>WESTCHESTER</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60154</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
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            <officerTitle>Vice Chairman</officerTitle>
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    </reportingOwner>

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            <transactionCoding>
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                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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            </expirationDate>
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                    <value>48486</value>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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            <exerciseDate>
                <value>1999-11-23</value>
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            <expirationDate>
                <value>2008-12-09</value>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>48486</value>
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            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>48486</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option</value>
                <footnoteId id="F4"/>
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            <conversionOrExercisePrice>
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            <transactionDate>
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            <transactionAmounts>
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                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>1999-11-23</value>
            </exerciseDate>
            <expirationDate>
                <value>2009-08-03</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>80810</value>
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            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>80810</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
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            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Employee Stock Option</value>
                <footnoteId id="F5"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>55.875</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2000-12-15</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionAmounts>
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                    <value>75000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <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>
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                </underlyingSecurityTitle>
                <underlyingSecurityShares>
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                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
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                <footnoteId id="F5"/>
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            <conversionOrExercisePrice>
                <value>62.25</value>
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            <transactionDate>
                <value>2001-12-14</value>
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            <transactionCoding>
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                <transactionCode>A</transactionCode>
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            <exerciseDate>
                <value>2002-12-14</value>
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            <expirationDate>
                <value>2011-12-14</value>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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                    <value>D</value>
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    <footnotes>
        <footnote id="F1">Includes grant of Restricted Stock vesting over three year period:  12/16/03, 12/16/04, 12/16/05.</footnote>
        <footnote id="F2">Grant of 16,666 shares of Restricted Stock January 2, 2004 vesting over 3 year period:  12/16/2004, 12/16/2005, 12/18/2006</footnote>
        <footnote id="F3">Includes 14,434 shares allocated to my account in the Illinois Tool Works Inc. Savings &amp; Investment Plan.  Information reported as of 12/16/04 (includes shares formerly held in Premark International Inc. Retirement Savings Plan).</footnote>
        <footnote id="F4">Options received for Premark Options pursuant to merger with ITW.</footnote>
        <footnote id="F5">Options vest in four (4) equal annual installments beginning one year from date of grant.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>James M. Ringler by Stewart S. Hudnut, Sr. V.P., Gen. Counsel &amp; Secretary   Attorney-In-Fact    POA On File</signatureName>
        <signatureDate>2004-12-17</signatureDate>
    </ownerSignature>
</ownershipDocument>

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</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----