MS9163B, MILITARY STANDARD: BOLT-MACHINE, STEEL, 12 POINT HEAD, .5625-18, BLACK OXIDE (22 JUN 1987) [NO SUPERSEDING DOCUMENT].
MS9163B, MILITARY STANDARD: BOLT-MACHINE, STEEL, 12 POINT HEAD, .5625-18, BLACK OXIDE (22 JUN 1987) [NO SUPERSEDING DOCUMENT].