MS9491A, MILITARY STANDARD: BOLT, MACHINE - HEXAGON HEAD, FULL SHANK, AMS 5731, .3125-24 UNJF-3A (17 NOV 1969) [SUPERSEDED BY SAE-AS9491].
MS9491A, MILITARY STANDARD: BOLT, MACHINE - HEXAGON HEAD, FULL SHANK, AMS 5731, .3125-24 UNJF-3A (17 NOV 1969) [SUPERSEDED BY SAE-AS9491].