MS9638, MILITARY STANDARD: BOLT, MACHINE - HEXAGON HEAD, PD SHANK, TITANIUM AMS 4967, .500-20 UNJF-3A (03 MAR 1970) [SUPERSEDED BY SAE-AS9638].
MS9638, MILITARY STANDARD: BOLT, MACHINE - HEXAGON HEAD, PD SHANK, TITANIUM AMS 4967, .500-20 UNJF-3A (03 MAR 1970) [SUPERSEDED BY SAE-AS9638].