MS51981C, MILITARY STANDARD: SETSCREW-HEXAGON SOCKET, OVAL POINT, ALLOY STEEL, CADMIUM PLATED, UNC-3A (15 MAR 1979) [SUPERSEDING MS51049] [SUPERSEDED BY NASM51981]

MS51981C, MILITARY STANDARD: SETSCREW-HEXAGON SOCKET, OVAL POINT, ALLOY STEEL, CADMIUM PLATED, UNC-3A (15 MAR 1979) [SUPERSEDING MS51049] [SUPERSEDED BY NASM51981].