MS51478, MILITARY STANDARD: SCREW, CAP, HEXAGON (FINISHED HEXAGON BOLT), HEAD DRILLED FOR LOCKING WIRE ALLOY STEEL, GRADE 8, UNF-2A (01 AUG 1984).
MS51478, MILITARY STANDARD: SCREW, CAP, HEXAGON (FINISHED HEXAGON BOLT), HEAD DRILLED FOR LOCKING WIRE ALLOY STEEL, GRADE 8, UNF-2A (01 AUG 1984).