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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,
 EmGt9pg5R6u1qVyHSA7vpk37k1D75uilExZs05gGzhu+WgqstJD8xGhfDpbFJsUO
 qrABr3J8vOhr9vFfmX2KdA==

<SEC-DOCUMENT>0001245031-03-000016.txt : 20030702
<SEC-HEADER>0001245031-03-000016.hdr.sgml : 20030702
<ACCEPTANCE-DATETIME>20030702172249
ACCESSION NUMBER:		0001245031-03-000016
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030630
FILED AS OF DATE:		20030702

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PTAK FRANK S
		CENTRAL INDEX KEY:			0001180975

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07724
		FILM NUMBER:		03772949

	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:			SNAP ON INC
		CENTRAL INDEX KEY:			0000091440
		STANDARD INDUSTRIAL CLASSIFICATION:	CUTLERY, HANDTOOLS & GENERAL HARDWARE [3420]
		IRS NUMBER:				390622040
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		10801 CORPORATE DRIVE
		CITY:			KENOSHA
		STATE:			WI
		ZIP:			53141-1430
		BUSINESS PHONE:		4146565200

	MAIL ADDRESS:	
		STREET 1:		10801 CORPORATE DRIVE
		CITY:			KENOSHA
		STATE:			WI
		ZIP:			53141

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SNAP ON TOOLS CORP
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0101</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-06-30</periodOfReport>
    <issuer>
        <issuerCik>0000091440</issuerCik>
        <issuerName>SNAP ON INC</issuerName>
        <issuerTradingSymbol>SNA</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId>
            <rptOwnerCik>0001180975</rptOwnerCik>
            <rptOwnerName>PTAK FRANK S</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>  </rptOwnerStreet1>
            <rptOwnerStreet2>  </rptOwnerStreet2>
            <rptOwnerCity>  </rptOwnerCity>
            <rptOwnerState>  </rptOwnerState>
            <rptOwnerZipCode>  </rptOwnerZipCode>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><derivativeSecurity><securityTitle><value>Deferred Stock Unit</value></securityTitle><conversionOrExercisePrice><value>0</value><footnoteId id="F1"/></conversionOrExercisePrice><transactionDate><value>2003-06-30</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F2"/></transactionCoding><transactionAmounts><transactionShares><value>64</value></transactionShares><transactionValue><value>29.03</value></transactionValue><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>1988-08-08</value><footnoteId id="F3"/></exerciseDate><expirationDate><value>1988-08-08</value><footnoteId id="F3"/></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Commo
n Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>64</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>2992.27</value><footnoteId id="F4"/><footnoteId id="F5"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeSecurity><footnotes><footnote id="F1">1 for 1.</footnote><footnote id="F2">Payment of fees in stock under the Corporation's Directors' 1993 Fee Plan.</footnote><footnote id="F3">Scheduled for issuance in lump sum after the earliest of a date specified in advance of the deferral by the reporting person, or on death or retirement from the Board.</footnote><footnote id="F4">Includes 23.404 deferred stock units acquired in June 2003 through exempt dividend reinvestments.</footnote><footnote id="F5">The reporting person also directly owns the fo
llowing stock options to purchase shares of Snap-on Incorporated common stock: (i) 3,000 shares at $29.36 per share (exercisable 4/27/01 and expiring 4/27/11); (ii) 3,000 shares at $32.08 per share (exercisable 4/25/02 and expiring 4/25/12); and (iii) 3,000 shares at $28.43 per share (exercisable 4/24/03 and expiring 4/24/13).</footnote></footnotes><ownerSignature><signatureName>Jason D. Bartel under Power of Attorney for Frank S. Ptak</signatureName><signatureDate>2003-07-02</signatureDate></ownerSignature></ownershipDocument>

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