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 6105-01-448-2655
NSN 6645-01-294-2479
NSN 5905-01-482-1030
NSN 5920-00-269-6178
NSN 6150-01-653-8813
NSN 5835-01-083-4349
NSN 5975-01-152-2521
NSN 6645-01-464-4937
NSN 5998-01-659-5173
NSN 6620-01-445-4295
NSN 5960-00-606-9149
NSN 6685-00-227-6750