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 5965-01-608-1919
NSN 5935-01-264-3339
NSN 6220-00-553-1836
NSN 6620-01-181-1757
NSN 6150-01-420-5067
NSN 5920-01-481-3400
NSN 6150-00-202-9150
NSN 5990-00-006-5760
NSN 6135-00-990-1822
NSN 5965-01-222-0166
NSN 5835-01-331-5735
NSN 5895-01-612-8888