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 6130-01-518-2596
NSN 5945-00-167-0630
NSN 6610-00-583-1084
NSN 5945-00-816-4282
NSN 4140-01-136-9802
NSN 5998-01-420-6475
NSN 6135-01-069-2482
NSN 5835-01-355-3654
NSN 5835-00-546-4898
NSN 4140-00-686-4894
NSN 5945-01-323-1533
NSN 2925-00-139-0720