MS9567A, MILITARY STANDARD: BOLT, MACHINE-DOUBLE HEXAGON, EXTENDED WASHER HEAD, DRILLED, PD SHANK, AMS 5731, .3125-24 UNJF-3A (17 NOV 1969) [SUPERSEDED BY SAE-AS9567].
MS9567A, MILITARY STANDARD: BOLT, MACHINE-DOUBLE HEXAGON, EXTENDED WASHER HEAD, DRILLED, PD SHANK, AMS 5731, .3125-24 UNJF-3A (17 NOV 1969) [SUPERSEDED BY SAE-AS9567].