MS21292B (NOTICE 1), MILITARY STANDARD: BOLT, MACHINE - STEEL, DRILLED, DOUBLE HEXAGON, EXTENDED WASHER, .4375-20 (MIL-S-8879 THREAD) (23 SEP 1991)
MS21292B (NOTICE 1), MILITARY STANDARD: BOLT, MACHINE - STEEL, DRILLED, DOUBLE HEXAGON, EXTENDED WASHER, .4375-20 (MIL-S-8879 THREAD) (23 SEP 1991).