    <SEC-DOCUMENT>0001140361-21-011009-index.html : 20210331
    <SEC-HEADER>0001140361-21-011009.hdr.sgml : 20210331
    <ACCEPTANCE-DATETIME>20210331151259
    ACCESSION NUMBER:		0001140361-21-011009
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20210331
    DATE AS OF CHANGE:		20210331

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			TRIMAS CORP
    		CENTRAL INDEX KEY:			0000842633
    		STANDARD INDUSTRIAL CLASSIFICATION:	METAL FORGING & STAMPINGS [3460]
    		IRS NUMBER:				382687639
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-10716
    		FILM NUMBER:		21792757

    	BUSINESS ADDRESS:
    		STREET 1:		38505 WOODWARD AVENUE
    		STREET 2:		SUITE 200
    		CITY:			BLOOMFIELD HILLS
    		STATE:			MI
    		ZIP:			48304
    		BUSINESS PHONE:		2486315400

    	MAIL ADDRESS:
    		STREET 1:		38505 WOODWARD AVENUE
    		STREET 2:		SUITE 200
    		CITY:			BLOOMFIELD HILLS
    		STATE:			MI
    		ZIP:			48304
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>nc10020102x2_defa14a.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: nc10020102x2_defa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>nc10020102x2_nc1.jpg
    <TEXT>
    Document 2 - file: nc10020102x2_nc1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>nc10020102x2_nc2.jpg
    <TEXT>
    Document 3 - file: nc10020102x2_nc2.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>