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 6110-00-525-3418
NSN 5945-01-229-1420
NSN 6240-00-841-0189
NSN 7035-01-497-2602
NSN 5996-00-456-0895
NSN 4140-01-533-3139
NSN 5996-01-517-0312
NSN 6130-01-071-2820
NSN 5855-01-503-0144
NSN 5855-01-083-1027
NSN 6130-01-597-9623
NSN 5950-01-525-7334