MS16997D, MILITARY SPECIFICATION SHEET: SCREW, CAP, SOCKET HEAD AND SCREW, CAP, SOCKET HEAD, SELF-LOCKING, ALLOY STEEL, CADMIUM PLATED, UNC-3A (31 DEC 1976) [SUPERSEDED BY NAS1352]

MS16997D, MILITARY SPECIFICATION SHEET: SCREW, CAP, SOCKET HEAD AND SCREW, CAP, SOCKET HEAD, SELF-LOCKING, ALLOY STEEL, CADMIUM PLATED, UNC-3A (31 DEC 1976) [SUPERSEDED BY NAS1352].