MS21295A, MILITARY STANDARD: SCREWS, SELF LOCKING, 250 DEG. F, CYLINDRICAL HEAD, HEXAGONAL WRENCHING SOCKET, CORROSION RESISTING STEEL, 80 KSI FTU (SOCKET HEAD CAP SCREWS) (20 FEB 1963) [SUPERSEDED BY NASM21295]

MS21295A, MILITARY STANDARD: SCREWS, SELF LOCKING, 250 DEG. F, CYLINDRICAL HEAD, HEXAGONAL WRENCHING SOCKET, CORROSION RESISTING STEEL, 80 KSI FTU (SOCKET HEAD CAP SCREWS) (20 FEB 1963) [SUPERSEDED BY NASM21295].