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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
 Vps+hevCQDZYo0LqQXUAD7B07Njl5q6VZP6k5aNoP7tCOObaVQmlqMlTcm3mJtBt
 NArp3Kk6iz3Lg1s9uoUeyg==

<SEC-DOCUMENT>0001209191-07-017071.txt : 20070312
<SEC-HEADER>0001209191-07-017071.hdr.sgml : 20070312
<ACCEPTANCE-DATETIME>20070312145935
ACCESSION NUMBER:		0001209191-07-017071
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070305
FILED AS OF DATE:		20070312
DATE AS OF CHANGE:		20070312

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HEI INC
		CENTRAL INDEX KEY:			0000351298
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				410944876
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			0831

	BUSINESS ADDRESS:	
		STREET 1:		1495 STEIGER LAKE LN
		STREET 2:		P O BOX 5000
		CITY:			VICTORIA
		STATE:			MN
		ZIP:			55386
		BUSINESS PHONE:		9524432500

	MAIL ADDRESS:	
		STREET 1:		P O BOX 5000
		STREET 2:		1495 STEIGER LAKE LANE
		CITY:			VICTORIA
		STATE:			MN
		ZIP:			55386

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HELLER ROBERT W
		CENTRAL INDEX KEY:			0000905556

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-10078
		FILM NUMBER:		07687366

	MAIL ADDRESS:	
		STREET 1:		10992 MOUNT CURVE ROAD
		CITY:			EDEN PRAIRIE
		STATE:			MN
		ZIP:			55347
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>bmn13081_bmn2rwh.xml
<DESCRIPTION>MAIN DOCUMENT DESCRIPTION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2007-03-05</periodOfReport>

    <dateOfOriginalSubmission>2007-03-07</dateOfOriginalSubmission>

    <issuer>
        <issuerCik>0000351298</issuerCik>
        <issuerName>HEI INC</issuerName>
        <issuerTradingSymbol>HEII</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000905556</rptOwnerCik>
            <rptOwnerName>HELLER ROBERT W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>10992 MOUNT CURVE RD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>EDEN PRAIRIE</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55347</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2007-03-05</value>
                <footnoteId id="F2"/>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>5714</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.4</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>18714</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Shares are restricted through August 16, 2007 and were issued in lieu of cash compensation for Board Fees.</footnote>
        <footnote id="F2">Amendment being filed to correct transaction date.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Robert W. Heller</signatureName>
        <signatureDate>2007-03-12</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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