MS9065B (NOTICE 1), MILITARY STANDARD, BOLT, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, CORROSION AND HEAT RESISTANT STEEL, DRILLED, .500-20 NS (21 OCT 1991)

MS9065B (NOTICE 1), MILITARY STANDARD, BOLT, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, CORROSION AND HEAT RESISTANT STEEL, DRILLED, .500-20 NS (21 OCT 1991).