Standard BOLT, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, CLOSE TOLERANCE SHANK, AMS 4967, .250-28 UNJF-3A 2006-05-03 HISTORICAL AS3148
Standard BOLT, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, CLOSE TOLERANCE SHANK, AMS4967 (UNS R56400), 160 KSI, .2500-28 UNJF-3A 2019-03-28 CURRENT AS3148B
Standard BOLT, MACHINE - DOUBLE HEXAGON EXTENDED WASHER HEAD, CLOSE TOLERANCE SHANK, AMS4967 (UNS R56400), 160 KSI, .2500-28 UNJF-3A 2013-06-17 HISTORICAL AS3148A