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 5999-01-041-3794
NSN 6110-00-092-5116
NSN 5950-00-396-2556
NSN 2925-01-386-7392
NSN 6240-01-334-3972
NSN 5905-00-935-8593
NSN 5835-00-683-4612
NSN 5998-00-507-0825
NSN 5855-00-631-4565
NSN 6135-01-282-4326
NSN 6650-01-643-5908
NSN 2925-00-474-4990