MS9161B, MILITARY STANDARD: BOLT-MACHINE, STEEL, 12 POINT HEAD, .4375-20, BLACK OXIDE (22 JUN 1987) [NO SUPERSEDING DOCUMENT]
MS9161B, MILITARY STANDARD: BOLT-MACHINE, STEEL, 12 POINT HEAD, .4375-20, BLACK OXIDE (22 JUN 1987) [NO SUPERSEDING DOCUMENT].