MS21294B (NOTICE 1), MILITARY STANDARD: BOLT, MACHINE - STEEL, DRILLED, DOUBLE HEXAGON, EXTENDED WASHER, .5625-18 (MIL-S-8879 THREAD) (23 SEP 1991)
MS21294B (NOTICE 1), MILITARY STANDARD: BOLT, MACHINE - STEEL, DRILLED, DOUBLE HEXAGON, EXTENDED WASHER, .5625-18 (MIL-S-8879 THREAD) (23 SEP 1991).