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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0001104659-05-034466.txt : 20050727
<SEC-HEADER>0001104659-05-034466.hdr.sgml : 20050727
<ACCEPTANCE-DATETIME>20050727165213
ACCESSION NUMBER:		0001104659-05-034466
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050726
FILED AS OF DATE:		20050727
DATE AS OF CHANGE:		20050727

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MSC INDUSTRIAL DIRECT CO INC
		CENTRAL INDEX KEY:			0001003078
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-INDUSTRIAL MACHINERY & EQUIPMENT [5084]
		IRS NUMBER:				113289165
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			0902

	BUSINESS ADDRESS:	
		STREET 1:		75 MAXESS RD
		CITY:			MELVILLE
		STATE:			NY
		ZIP:			11747
		BUSINESS PHONE:		516-812-2000

	MAIL ADDRESS:	
		STREET 1:		151 SUNNYSIDE BLVD
		CITY:			PLAINVIEW
		STATE:			NY
		ZIP:			11803

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SANDLER DAVID
		CENTRAL INDEX KEY:			0001245882

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14130
		FILM NUMBER:		05977903

	MAIL ADDRESS:	
		STREET 1:		C/O MSC INDUSTRIAL DIRECT CO INC
		STREET 2:		75 MAXESS RD
		CITY:			MELVILLE
		STATE:			NY
		ZIP:			11747
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>a4.xml
<DESCRIPTION>4
<TEXT>
<XML>
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    <periodOfReport>2005-07-26</periodOfReport>

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            <rptOwnerStreet2>75 MAXESS RD</rptOwnerStreet2>
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                <value></value>
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                    <value>D</value>
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    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Options (right to buy)</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>19.00</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2005-07-26</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>30000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
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            <exerciseDate>
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            <expirationDate>
                <value>2007-11-19</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>See Footnote</value>
                    <footnoteId id="F3"/>
                </underlyingSecurityTitle>
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            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
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            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Options to purchase Issuer's Class A common stock, $.001 par value</footnote>
        <footnote id="F2">An option to purchase 30,000 shares of the Issuer's common stock, par value $.001 per share, was issued to the Reporting person under the Issuer's 1995 Stock Option Plan. One-fifth of such option became exercisable on each of November 19, 1998, November 19, 1999, November 19, 2000, November 19, 2001 and November 19, 2002.</footnote>
        <footnote id="F3">Class A Common Stock, $.001 par value</footnote>
        <footnote id="F4">Because the SEC's electronic filing system does not allow for the disclosure of more than 30 transactions on one Form 4, the Reporting Person is filing 2 simultaneous Form 4's to report his reportable transactions all  of which together shall be deemed a single report filed on this date.  This is the 1ST  Form 4 of the 2 filings.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ David Sandler</signatureName>
        <signatureDate>2005-07-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----