MS9172A, MILITARY SPECIFICATION, BOLT-MACHINE, STEEL, DRILLED 12 POINT HEAD, .375-24, BLACK OXIDE (6 MAY 1987) [S/S BY SAE-AS91721]
MS9172A, MILITARY SPECIFICATION, BOLT-MACHINE, STEEL, DRILLED 12 POINT HEAD, .375-24, BLACK OXIDE (6 MAY 1987) [S/S BY SAE-AS91721].