<SEC-DOCUMENT>0000920371-18-000114-index.html : 20180629
<SEC-HEADER>0000920371-18-000114.hdr.sgml : 20180629
<ACCEPTANCE-DATETIME>20180629162212
ACCESSION NUMBER:		0000920371-18-000114
CONFORMED SUBMISSION TYPE:	11-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20171231
FILED AS OF DATE:		20180629
DATE AS OF CHANGE:		20180629

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SIMPSON MANUFACTURING CO INC /CA/
		CENTRAL INDEX KEY:			0000920371
		STANDARD INDUSTRIAL CLASSIFICATION:	CUTLERY, HANDTOOLS & GENERAL HARDWARE [3420]
		IRS NUMBER:				943196943
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		11-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13429
		FILM NUMBER:		18929545

	BUSINESS ADDRESS:	
		STREET 1:		5956 W LAS POSITAS BLVD
		CITY:			PLEASANTON
		STATE:			CA
		ZIP:			94588
		BUSINESS PHONE:		9255609000

	MAIL ADDRESS:	
		STREET 1:		5956 W LAS POSITAS BLVD
		CITY:			PLEASANTON
		STATE:			CA
		ZIP:			94588
</SEC-HEADER>
<DOCUMENT>
<TYPE>11-K
<SEQUENCE>1
<FILENAME>ssd11-k401kprofitsharingpl.htm
<DESCRIPTION>11-K
<TEXT>
Document 1 - file: ssd11-k401kprofitsharingpl.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23
<SEQUENCE>2
<FILENAME>exhibit23.htm
<DESCRIPTION>EXHIBIT 23
<TEXT>
Document 2 - file: exhibit23.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>3
<FILENAME>exhibit991.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 3 - file: exhibit991.htm

</DOCUMENT>
</SEC-DOCUMENT>