MS9638 (NOTICE 2), MILITARY STANDARD: BOLT, MACHINE - HEXAGON HEAD, PD SHANK, TITANIUM AMS 4967, .500-20 UNJF-3A (23 SEP 1998) [SUPERSEDED BY SAE-AS9638].
MS9638 (NOTICE 2), MILITARY STANDARD: BOLT, MACHINE - HEXAGON HEAD, PD SHANK, TITANIUM AMS 4967, .500-20 UNJF-3A (23 SEP 1998) [SUPERSEDED BY SAE-AS9638].