MS51494 (NOTICE 1), MILITARY STANDARD: SCREW, EXTERNALLY RELIEVED BODY, FLAT COUNTERSUNK HEAD, 100 DEGREE, CROSS-RECESSED (01 OCT 1997).
MS51494 (NOTICE 1), MILITARY STANDARD: SCREW, EXTERNALLY RELIEVED BODY, FLAT COUNTERSUNK HEAD, 100 DEGREE, CROSS-RECESSED (01 OCT 1997).