MS9557E (AMENDMENT 2), MILITARY STANDARD: BOLT, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, CORROSION AND HEAT RESISTANT STEEL, .250-28 UNJF-3A (29 APR 1996) [SUPERSEDED BY SAE-AS9557].
MS9557E (AMENDMENT 2), MILITARY STANDARD: BOLT, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, CORROSION AND HEAT RESISTANT STEEL, .250-28 UNJF-3A (29 APR 1996) [SUPERSEDED BY SAE-AS9557].