MS9222A, MILITARY STANDARD: BOLT, MACHINE-STEEL DIFFUSED NICKEL-CADMIUM PLATE, DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, .500-20 UNJF-3A (09 MAY 1988).
MS9222A, MILITARY STANDARD: BOLT, MACHINE-STEEL DIFFUSED NICKEL-CADMIUM PLATE, DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, .500-20 UNJF-3A (09 MAY 1988).