MS51099B, MILITARY STANDARD, SCREW, CAP, HEXAGON HEAD (FINISHED HEXAGON BOLT), HEAD DRILLED FOR LOCKING WIRE, STEEL, CORROSION-RESISTING, PASSIVATED, UNC-2A (1 MAY 1969)

MS51099B, MILITARY STANDARD, SCREW, CAP, HEXAGON HEAD (FINISHED HEXAGON BOLT), HEAD DRILLED FOR LOCKING WIRE, STEEL, CORROSION-RESISTING, PASSIVATED, UNC-2A (1 MAY 1969).