Standard BOLT, MACHINE - DOUBLE HEX EXTENDED WASHER HEAD, DRILLED, CLOSE TOL SHANK, AMS5643 (UNS S17400), 140 KSI, .4375-20 UNJF-3A 2019-09-20 CURRENT AS3178B
Standard BOLT, MACHINE - DOUBLE HEX EXTENDED WASHER HEAD, DRILLED, CLOSE TOL SHANK, AMS5643 (UNS S17400), 140 KSI, .4375-20 UNJF-3A 2014-02-27 HISTORICAL AS3178A
Standard BOLT, MACHINE - DOUBLE HEX EXTENDED WASHER HEAD, DRILLED, CL TOL SHANK, AMS 5643, .4375-20, UNJF-3A 2006-10-10 HISTORICAL AS3178