<SEC-DOCUMENT>0001292814-25-001956-index.html : 20250509
<SEC-HEADER>0001292814-25-001956.hdr.sgml : 20250509
<ACCEPTANCE-DATETIME>20250508214016
ACCESSION NUMBER:		0001292814-25-001956
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20250630
FILED AS OF DATE:		20250509
DATE AS OF CHANGE:		20250508

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NATIONAL STEEL CO
		CENTRAL INDEX KEY:			0001049659
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL WORKS, BLAST FURNACES & ROLLING & FINISHING MILLS [3310]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				000000000
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14732
		FILM NUMBER:		25928152

	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
<SEQUENCE>1
<FILENAME>sid20250508_6k.htm
<DESCRIPTION>6-K
<TEXT>
Document 1 - file: sid20250508_6k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-16.1
<SEQUENCE>2
<FILENAME>ex16-1.htm
<DESCRIPTION>EX-16.1
<TEXT>
Document 2 - file: ex16-1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>sid202505086k_002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: sid202505086k_002.jpg

</DOCUMENT>
</SEC-DOCUMENT>