MS51997C (AMENDMENT 2), MILITARY STANDARD: RING, LOCK, SERRATED-HIGH STRENGTH (31 OCT 1997) [S/S by SAE-AS51997]

MS51997C (AMENDMENT 2), MILITARY STANDARD: RING, LOCK, SERRATED-HIGH STRENGTH (31 OCT 1997) [S/S by SAE-AS51997]., This amendment forms a part of MS51997C, dated 17 JANUARY 1989, and is approved for use by all Departments and Agencies of the Department of Defense.