    <SEC-DOCUMENT>0001292814-17-003353-index.html : 20171218
    <SEC-HEADER>0001292814-17-003353.hdr.sgml : 20171218
    <ACCEPTANCE-DATETIME>20171218162115
    ACCESSION NUMBER:		0001292814-17-003353
    CONFORMED SUBMISSION TYPE:	6-K/A
    PUBLIC DOCUMENT COUNT:		11
    CONFORMED PERIOD OF REPORT:	20171231
    FILED AS OF DATE:		20171218
    DATE AS OF CHANGE:		20171218

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			NATIONAL STEEL CO
    		CENTRAL INDEX KEY:			0001049659
    		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES & ROLLING & FINISHING MILLS [3310]
    		IRS NUMBER:				000000000
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		6-K/A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-14732
    		FILM NUMBER:		171261621

    	BUSINESS ADDRESS:
    		STREET 1:		RUA LAURO MULLER
    		STREET 2:		116 36 ANDAR
    		CITY:			RIO DE JANEIRO RJ BR
    		STATE:			D5
    		ZIP:			00000
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>6-K/A
    <SEQUENCE>1
    <FILENAME>siditr1q16_6ka.htm
    <DESCRIPTION>SIDITR1Q16_6KA
    <TEXT>
    Document 1 - file: siditr1q16_6ka.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>x17120111403430.jpg
    <TEXT>
    Document 2 - file: x17120111403430.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>logo.gif
    <TEXT>
    Document 3 - file: logo.gif

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>pg03graf.gif
    <TEXT>
    Document 4 - file: pg03graf.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>pg04img01.gif
    <TEXT>
    Document 5 - file: pg04img01.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>pg06img01.gif
    <TEXT>
    Document 6 - file: pg06img01.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>pg06img02.gif
    <TEXT>
    Document 7 - file: pg06img02.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>pg07img01.gif
    <TEXT>
    Document 8 - file: pg07img01.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>pg09img01.gif
    <TEXT>
    Document 9 - file: pg09img01.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>pg10img01.gif
    <TEXT>
    Document 10 - file: pg10img01.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>pg10img02.gif
    <TEXT>
    Document 11 - file: pg10img02.gif

    </DOCUMENT>
    </SEC-DOCUMENT>