<SEC-DOCUMENT>0001127602-17-027653.txt : 20170919
<SEC-HEADER>0001127602-17-027653.hdr.sgml : 20170919
<ACCEPTANCE-DATETIME>20170919101615
ACCESSION NUMBER:		0001127602-17-027653
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20170918
FILED AS OF DATE:		20170919
DATE AS OF CHANGE:		20170919

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Austin Lloyd J. III
		CENTRAL INDEX KEY:			0001680876

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-04119
		FILM NUMBER:		171091258

	MAIL ADDRESS:	
		STREET 1:		UNITED TECHNOLOGIES CORPORATION
		STREET 2:		10 FARM SPRINGS ROAD
		CITY:			FARMINGTON
		STATE:			CT
		ZIP:			06032

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NUCOR CORP
		CENTRAL INDEX KEY:			0000073309
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES  ROLLING MILLS (COKE OVENS) [3312]
		IRS NUMBER:				131860817
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1915 REXFORD RD
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28211
		BUSINESS PHONE:		7043667000

	MAIL ADDRESS:	
		STREET 1:		1915 REXFORD ROAD
		CITY:			CHARLOTTE
		STATE:			NC
		ZIP:			28211

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NUCLEAR CORP OF AMERICA INC
		DATE OF NAME CHANGE:	19680911

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AZTEC MECHANICAL CONTRACTORS INC
		DATE OF NAME CHANGE:	19660629
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>form3.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2017-09-18</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000073309</issuerCik>
        <issuerName>NUCOR CORP</issuerName>
        <issuerTradingSymbol>NUE</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001680876</rptOwnerCik>
            <rptOwnerName>Austin Lloyd J. III</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1915 REXFORD ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHARLOTTE</rptOwnerCity>
            <rptOwnerState>NC</rptOwnerState>
            <rptOwnerZipCode>28112</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <footnotes></footnotes>

    <ownerSignature>
        <signatureName>/s/ Kelly J. Wilmoth, attorney-in-fact for Mr. Austin</signatureName>
        <signatureDate>2017-09-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>doc1.txt
<DESCRIPTION>POWER OF ATTORNEY (PUBLIC): LJAPOWER
<TEXT>
Exhibit 24

Confirming Statement

This Statement confirms that the undersigned, Lloyd James Austin III, has
authorized and designated  A. Rae Eagle and Kelly J. Wilmoth to execute and
file on the undersigned?s behalf all Forms 3, 4, and 5 (including any
amendments thereto) that the undersigned may be required to file with the
U.S. Securities and Exchange Commission as a result of the undersigned?s
ownership of or transactions in securities of Nucor Corporation.  The
authority of A. Rae Eagle and Kelly J. Wilmoth under this Statement shall
continue until the undersigned is no longer required to file Forms 3, 4 and
5 with regard to his ownership of or transactions in Nucor Corporation,
unless earlier revoked in writing.  The undersigned acknowledges that
A. Rae Eagle and Kelly J. Wilmoth are not assuming any of the undersigned?s
responsibilities to comply with Section 16 of the Securities Exchange Act
of 1934.




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