MS9111, MILITARY STANDARD: BOLT, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, CLOSE TOLERANCE SHANK, AMS 5731, .250-28 UNJF-3A (04 JAN 1965) [SUPERSED

MS9111, MILITARY STANDARD: BOLT, MACHINE-DOUBLE HEXAGON EXTENDED WASHER HEAD, CLOSE TOLERANCE SHANK, AMS 5731, .250-28 UNJF-3A (04 JAN 1965) [SUPERSEDED BY SAE-AS91111].