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 6645-01-541-9114
NSN 6220-01-212-3254
NSN 7035-01-557-1059
NSN 5965-01-542-3102
NSN 6145-01-132-2279
NSN 6145-01-364-0346
NSN 5990-00-009-3291
NSN 6240-01-269-3146
NSN 5895-01-258-5591
NSN 5945-01-437-8905
NSN 6610-00-982-5281
NSN 5910-01-469-7612