A locking device with two keys spaced approximately 180 degrees center to center and protruding from the seating surface of the ring. When installed the keys mate with companion keyways in the external threads of screw thread inserts, locked-in studs, or similar type items, and cut through sufficient threads of the parent material tapped hole to provide a positive lock between the threaded bodies.
NSN 6135-01-462-4442
NSN 6105-01-305-9118
NSN 4140-00-210-0552
NSN 5920-00-063-0505
NSN 5960-01-533-5162
NSN 5960-00-597-2680
NSN 5905-01-467-3038
NSN 5975-01-496-5917
NSN 6650-01-338-6042
NSN 5895-00-432-3559
NSN 5930-00-708-2364
NSN 6645-01-483-1518