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 5905-00-250-7890
NSN 4140-01-510-9666
NSN 5935-00-581-5945
NSN 6130-01-170-4059
NSN 5925-01-508-3849
NSN 6110-01-436-2699
NSN 6240-01-372-5894
NSN 5950-00-022-4083
NSN 5950-00-959-1213
NSN 7035-01-230-0250
NSN 5855-01-213-9076
NSN 6240-01-050-9156