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 6130-01-460-0326
NSN 6135-00-170-8819
NSN 5925-01-659-5405
NSN 6620-01-425-2750
NSN 6610-00-315-9315
NSN 5835-01-519-3834
NSN 6645-00-467-6094
NSN 6645-01-513-4782
NSN 5990-01-529-6347
NSN 6135-01-377-5729
NSN 5999-01-270-6717
NSN 6145-00-233-6010