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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 IM3wmLAg/q5/6MZoCYHPGEdN8h1wOQhw2zf1B12xlOpw5gJ79DSfMMakIxACuVJF
 UGvTHeuI55ti00aJAGNvSA==

<SEC-DOCUMENT>0001245031-03-000040.txt : 20030804
<SEC-HEADER>0001245031-03-000040.hdr.sgml : 20030804
<ACCEPTANCE-DATETIME>20030804130622
ACCESSION NUMBER:		0001245031-03-000040
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030731
FILED AS OF DATE:		20030804

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

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			NYBERG LARS
		CENTRAL INDEX KEY:			0001229229

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07724
		FILM NUMBER:		03819880

	BUSINESS ADDRESS:	
		STREET 1:		1700 S PATTERSON BLVD
		CITY:			DAYTON
		STATE:			OH
		ZIP:			45479
		BUSINESS PHONE:		9374451575

	MAIL ADDRESS:	
		STREET 1:		1700 S PATTESON BLVD
		CITY:			DAYTON
		STATE:			OH
		ZIP:			45479
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-07-31</periodOfReport>
    <issuer>
        <issuerCik>0000091440</issuerCik>
        <issuerName>SNAP ON INC</issuerName>
        <issuerTradingSymbol>SNA</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001229229</rptOwnerCik>
            <rptOwnerName>NYBERG LARS</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>NCR CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>1700 S. PATTERSON BLVD.</rptOwnerStreet2>
            <rptOwnerCity>DAYTON,</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>45479</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
            <reportingOwnerRelationship>
<isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><derivativeTable><derivativeHolding><securityTitle><value>Common Stock</value></securityTitle><conversionOrExercisePrice><value>32.08</value></conversionOrExercisePrice><exerciseDate><value>2002-04-25</value></exerciseDate><expirationDate><value>2012-04-25</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>3000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>3000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding><derivativeHolding><securityTitle><value>Common Stock</value></securityTitle><conversio
nOrExercisePrice><value>28.43</value></conversionOrExercisePrice><exerciseDate><value>2003-04-24</value></exerciseDate><expirationDate><value>2013-04-24</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>3000</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>3000</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeHolding><derivativeTransaction><securityTitle><value>Deferred Stock Unit</value></securityTitle><conversionOrExercisePrice><value>0</value><footnoteId id="F1"/></conversionOrExercisePrice><transactionDate><value>2003-07-31</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equityS
wapInvolved>0</equitySwapInvolved><footnoteId id="F2"/></transactionCoding><transactionAmounts><transactionShares><value>282</value></transactionShares><transactionPricePerShare><value>28.32</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><footnoteId id="F3"/></exerciseDate><expirationDate><footnoteId id="F3"/></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>282</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>2209.647</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><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></footnotes><remarks/><ownerSignature><signatureName>Jason D. Bartel under Power of Attorney for Lars Nyberg</signatureName><signatureDate>2003-08-04</signatureDate></ownerSignature></ownershipDocument>

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</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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