<SEC-DOCUMENT>0001258897-18-001092-index.html : 20180209
<SEC-HEADER>0001258897-18-001092.hdr.sgml : 20180209
<ACCEPTANCE-DATETIME>20180209083020
ACCESSION NUMBER:		0001258897-18-001092
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180209
DATE AS OF CHANGE:		20180209

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SPARTON CORP
		CENTRAL INDEX KEY:			0000092679
		STANDARD INDUSTRIAL CLASSIFICATION:	PRINTED CIRCUIT BOARDS [3672]
		IRS NUMBER:				381054690
		STATE OF INCORPORATION:			OH
		FISCAL YEAR END:			0630

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-20047
		FILM NUMBER:		18588011

	BUSINESS ADDRESS:	
		STREET 1:		425 N. MARTINGALE ROAD
		STREET 2:		SUITE 1000
		CITY:			SCHAUMBURG
		STATE:			IL
		ZIP:			60173
		BUSINESS PHONE:		8477625800

	MAIL ADDRESS:	
		STREET 1:		425 N. MARTINGALE ROAD
		STREET 2:		SUITE 1000
		CITY:			SCHAUMBURG
		STATE:			IL
		ZIP:			60173

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SPARKS WITHINGTON CO
		DATE OF NAME CHANGE:	19710510

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			DIMENSIONAL FUND ADVISORS LP
		CENTRAL INDEX KEY:			0000354204
		STANDARD INDUSTRIAL CLASSIFICATION:	UNKNOWN SIC - 0000 [0000]
		IRS NUMBER:				222370029
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		6300 BEE CAVE ROAD
		STREET 2:		BUILDING ONE
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78746
		BUSINESS PHONE:		(512) 306-7400

	MAIL ADDRESS:	
		STREET 1:		6300 BEE CAVE ROAD
		STREET 2:		BUILDING ONE
		CITY:			AUSTIN
		STATE:			TX
		ZIP:			78746

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DIMENSIONAL FUND ADVISORS INC
		DATE OF NAME CHANGE:	19920929
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>dfs238.htm
<DESCRIPTION>SCHEDULE 13G/A
<TEXT>
Document 1 - file: dfs238.htm

</DOCUMENT>
</SEC-DOCUMENT>