MS51973B (NOTICE 1), MILITARY STANDARD: SETSCREW - HEXAGON SOCKET, CONE POINT, ALLOY STEEL, CADMIUM PLATED, UNC-3A, PLAIN AND SELF-LOCKING (27-OCT-1999) [S/S BY NASM51973]

MS51973B (NOTICE 1), MILITARY STANDARD: SETSCREW - HEXAGON SOCKET, CONE POINT, ALLOY STEEL, CADMIUM PLATED, UNC-3A, PLAIN AND SELF-LOCKING (27-OCT-1999) [S/S BY NASM51973]., MS51973B, dated 29 DECEMBER 1972, is hereby canceled and superseded by NASM51973. The Part Identification Number (PIN) for MS51973B and the part number for NASM51973 are identical. The part numbers have not been changed.