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 5965-01-578-6911
NSN 5925-00-238-0412
NSN 5835-01-484-4698
NSN 6130-00-293-4714
NSN 5935-01-298-1833
NSN 5920-00-919-8121
NSN 5925-01-495-1071
NSN 6145-01-182-3448
NSN 6105-01-400-2903
NSN 5960-01-525-1690
NSN 5950-01-540-7433
NSN 5999-01-222-5181