This part is a kind of semiconductor called NAS620.

Function of this product has Washer.

Manufacturers : AIA

Image and pinout :

Some of the text within the PDF file :

AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC. 10000 WILSON BOULEVARD, SUITE 1700 ARLINGTON, VA 22209-3901 31 OCT 1961 2 15 NOV 1962 3 30 JUNE 1981 4 15 APRIL 1987 5 9 DEC 1992 6 SEPT. 2006 --`,`,`,`,`,`,,,`,``````,`,,,`,-`-`,,`,,`,`,,`--- NATIONAL AEROSPACE STANDARD © COPYRIGHT 2006 AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC. ALL RIGHTS RESERVED FED SUP CLASS 5310 ØA ØD T 6 THREAD SIZE (REF) SIZE CODE (a) T THICKNESS DIA A +.010 DIA D +.015 -.000 -.005 NO.0 (.0600) 0 .016 .063 .099 NO.2 (.0860) 2 .016 .089 .149 NO.3 (.0990) 3L .016 .102 .180 NO.3 (.0990) 3 .032 .102 .180 NO.4 (.1120) 4L .016 .115 .209 NO.4 (.1120) 4 .032 .115 .209 NO.5 (.1250) 5L .016 .128 .238 NO.5 (.1250) 5 .032 .128 .238 NO.6 (.1380) 6L .016 .143 .267 [ ... ]

NAS620 PDF Datasheet Download