Standard BOLT, MACHINE-DOUBLE HEX EXTENDED WASHER HEAD, CLOSE TOLERANCE SHANK, CORROSION RESISTANT STEEL (UNS S17400), 140 KSI UTS MIN, .2500-28, UNJF-3A 2020-08-26 CURRENT AS3168B
Standard BOLT, MACHINE-DOUBLE HEX EXTENDED WASHER HEAD, CLOSE TOLERANCE SHANK, CORROSION RESISTANT STEEL (UNS S17400), 140 KSI UTS MIN, .2500-28, UNJF-3A 2015-03-09 HISTORICAL AS3168A
Standard BOLT, MACHINE - DOUBLE HEX EXTENDED WASHER HEAD, CLOSE TOLERANCE SHANK, AMS 5643, .250-28, UNJF-3A 2006-10-10 HISTORICAL AS3168