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 5935-01-535-4314
NSN 5985-01-523-0807
NSN 5998-01-099-4176
NSN 6620-01-608-8548
NSN 6645-01-533-3786
NSN 6135-00-812-9039
NSN 2925-00-347-7893
NSN 6610-01-483-1317
NSN 5975-01-607-7925
NSN 5925-00-069-8985
NSN 7035-01-063-8753
NSN 5975-01-507-3513