MS9559E, MILITARY STANDARD: BOLT, MACHINE-DOUBLE HEXAGON, EXTENDED WASHER HEAD, CORROSION AND HEAT RESISTANT STEEL, .375-24 UNJF-3A (02 SEP 1993) [SUPERSEDED BY SAE-AS9559].
MS9559E, MILITARY STANDARD: BOLT, MACHINE-DOUBLE HEXAGON, EXTENDED WASHER HEAD, CORROSION AND HEAT RESISTANT STEEL, .375-24 UNJF-3A (02 SEP 1993) [SUPERSEDED BY SAE-AS9559].