MS21318A, MILITARY STANDARD: SCREW, DRIVE, ROUND HEAD, TYPE U, STEEL, CARBON, CADMIUM PLATED (13 OCT 1965) [SUPERSEDING AN535] [SUPERSEDED BY NASM21318]
MS21318A, MILITARY STANDARD: SCREW, DRIVE, ROUND HEAD, TYPE U, STEEL, CARBON, CADMIUM PLATED (13 OCT 1965) [SUPERSEDING AN535] [SUPERSEDED BY NASM21318].