MS9221A (NOTICE 3), MILITARY STANDARD: BOLT, MACHINE-STEEL DIFFUSED NICKEL-CADMIUM PLATE, DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, .4375-20 UNJF-3A (19 SEP 2001).
MS9221A (NOTICE 3), MILITARY STANDARD: BOLT, MACHINE-STEEL DIFFUSED NICKEL-CADMIUM PLATE, DOUBLE HEXAGON EXTENDED WASHER HEAD, DRILLED, .4375-20 UNJF-3A (19 SEP 2001).