MS9577B, MILITARY STANDARD: BOLT, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, PD SHANK, SILVER PLATED, .375-24 UNJF-3A (30 SEP 1989) [SUPERSEDED BY SAE-AS9577]

MS9577B, MILITARY STANDARD: BOLT, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, PD SHANK, SILVER PLATED, .375-24 UNJF-3A (30 SEP 1989) [SUPERSEDED BY SAE-AS9577].