MS9311B (NOTICE 1), MILITARY STANDARD: STUD, SHOULDERED & STEPPED, HEXAGON WRENCHING, DRILLED, STEEL, .250-28 UNF-3A X .3125-24 UNF-3A (15 OCT 1999) [SUPERSEDED BY SAE-AS9311].
MS9311B (NOTICE 1), MILITARY STANDARD: STUD, SHOULDERED & STEPPED, HEXAGON WRENCHING, DRILLED, STEEL, .250-28 UNF-3A X .3125-24 UNF-3A (15 OCT 1999) [SUPERSEDED BY SAE-AS9311].