Standard STUD, SHOULDERED, HEXAGON WRENCHING, DRILLED, STEEL, .250-28 UNF-3A X .250-28 UNF-3A 2004-07-27 HISTORICAL AS9310
Standard STUD, SHOULDERED, HEX, WRENCHING, DRILLED, STEEL UNS G87400, CAD, PLATED, 125 KSI MIN, .2500-28 UNF-3A X .2500-28 UNF-3A 2004-12-29 HISTORICAL AS9310A
Standard STUD, SHOULDERED, HEX, WRENCHING, DRILLED, STEEL, UNS G87400, CAD, PLATED, 125 KSI MIN, .2500-28 UNF-3A X .2500-28 UNF-3A 2014-01-02 CURRENT AS9310B