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 5930-00-466-3643
NSN 6145-01-467-0354
NSN 5920-01-386-4195
NSN 5996-00-781-1010
NSN 2925-01-491-0224
NSN 5910-01-467-9741
NSN 6610-00-851-3203
NSN 5910-01-043-5778
NSN 5920-01-364-1866
NSN 5960-01-230-2806
NSN 6620-01-479-7221
NSN 5920-01-629-3268