-----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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 hsJXh05VIbdywYaKvViyNw==

<SEC-DOCUMENT>0000050725-10-000004.txt : 20101014
<SEC-HEADER>0000050725-10-000004.hdr.sgml : 20101014
<ACCEPTANCE-DATETIME>20101013182020
ACCESSION NUMBER:		0000050725-10-000004
CONFORMED SUBMISSION TYPE:	D
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
FILED AS OF DATE:		20101014
DATE AS OF CHANGE:		20101013
EFFECTIVENESS DATE:		20101014

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			GRIFFON CORP
		CENTRAL INDEX KEY:			0000050725
		STANDARD INDUSTRIAL CLASSIFICATION:	METAL DOORS, SASH, FRAMES, MOLDING & TRIM [3442]
		IRS NUMBER:				111893410
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		D
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-149011
		FILM NUMBER:		101122486

	BUSINESS ADDRESS:	
		STREET 1:		712 FIFTH AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
		BUSINESS PHONE:		2129575000

	MAIL ADDRESS:	
		STREET 1:		712 FIFTH AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INSTRUMENT SYSTEMS CORP /DE/
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>D
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
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    <schemaVersion>X0704</schemaVersion>

    <submissionType>D</submissionType>

    <testOrLive>LIVE</testOrLive>

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        <cik>0000050725</cik>
        <entityName>GRIFFON CORP</entityName>
        <issuerAddress>
            <street1>712 FIFTH AVENUE, 18TH FLOOR</street1>
            <city>NEW YORK</city>
            <stateOrCountry>NY</stateOrCountry>
            <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
            <zipCode>10019</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>2129575000</issuerPhoneNumber>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <edgarPreviousNameList>
            <previousName>INSTRUMENT SYSTEMS CORP /DE/</previousName>
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        <entityType>Corporation</entityType>
        <yearOfInc>
            <overFiveYears>true</overFiveYears>
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            <relatedPersonName>
                <firstName>Ronald</firstName>
                <middleName>J.</middleName>
                <lastName>Kramer</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Griffon Corporation</street1>
                <street2>712 Fifth Avenue, 18th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10019</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
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            <relationshipClarification></relationshipClarification>
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            <relatedPersonName>
                <firstName>Douglas</firstName>
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                <street1>c/o Griffon Corporation</street1>
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            <relatedPersonAddress>
                <street1>c/o Griffon Corporation</street1>
                <street2>712 Fifth Avenue, 18th Floor</street2>
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                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
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            <relatedPersonName>
                <firstName>Henry</firstName>
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                <lastName>Alpert</lastName>
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            <relatedPersonAddress>
                <street1>c/o Griffon Corporation</street1>
                <street2>712 Fifth Avenue, 18th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10019</zipCode>
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            <relatedPersonRelationshipList>
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            <relationshipClarification></relationshipClarification>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Bertrand</firstName>
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                <street1>c/o Griffon Corporation</street1>
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                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Harvey</firstName>
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                <lastName>Blau</lastName>
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            <relatedPersonAddress>
                <street1>c/o Griffon Corporation</street1>
                <street2>712 Fifth Avenue, 18th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10019</zipCode>
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            <relatedPersonRelationshipList>
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            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Gerald</firstName>
                <middleName>J.</middleName>
                <lastName>Cardinale</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Griffon Corporation</street1>
                <street2>712 Fifth Avenue, 18th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10019</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Blaine</firstName>
                <middleName>V.</middleName>
                <lastName>Fogg</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Griffon Corporation</street1>
                <street2>712 Fifth Avenue, 18th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10019</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Bradley</firstName>
                <middleName>J.</middleName>
                <lastName>Gross</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Griffon Corporation</street1>
                <street2>712 Fifth Avenue, 18th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10019</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Robert</firstName>
                <middleName>G.</middleName>
                <lastName>Harrison</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Griffon Corporation</street1>
                <street2>712 Fifth Avenue, 18th Floor</street2>
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                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10019</zipCode>
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            <relatedPersonRelationshipList>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Donald</firstName>
                <middleName>J.</middleName>
                <lastName>Kutnya</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Griffon Corporation</street1>
                <street2>712 Fifth Avenue, 18th Floor</street2>
                <city>New York</city>
                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
                <zipCode>10019</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>James</firstName>
                <middleName>A.</middleName>
                <lastName>Mitarotonda</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>c/o Griffon Corporation</street1>
                <street2>712 Fifth Avenue, 18th Floor</street2>
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                <stateOrCountry>NY</stateOrCountry>
                <stateOrCountryDescription>NEW YORK</stateOrCountryDescription>
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            <relatedPersonRelationshipList>
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            <relationshipClarification></relationshipClarification>
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        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Martin</firstName>
                <middleName>S.</middleName>
                <lastName>Sussman</lastName>
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                <street1>c/o Griffon Corporation</street1>
                <street2>712 Fifth Avenue, 18th Floor</street2>
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            <relatedPersonRelationshipList>
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            <relationshipClarification></relationshipClarification>
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        <relatedPersonInfo>
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                <firstName>William</firstName>
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    <offeringData>
        <industryGroup>
            <industryGroupType>Manufacturing</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>Over $100,000,000</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
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            <newOrAmendment>
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            <dateOfFirstSale>
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            <moreThanOneYear>false</moreThanOneYear>
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        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>false</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
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        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>true</hasNonAccreditedInvestors>
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        <salesCommissionsFindersFees>
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                <dollarAmount>0</dollarAmount>
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        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>GRIFFON CORP</issuerName>
                <signatureName>Seth L. Kaplan</signatureName>
                <nameOfSigner>Seth L. Kaplan</nameOfSigner>
                <signatureTitle>Senior Vice President</signatureTitle>
                <signatureDate>2010-10-13</signatureDate>
            </signature>
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</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----