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 5950-01-411-1466
NSN 2925-01-381-5307
NSN 7035-01-138-5781
NSN 6220-00-817-8692
NSN 2925-00-144-6405
NSN 5945-01-247-6373
NSN 6105-00-898-7626
NSN 6320-01-631-7828
NSN 5935-01-010-4404
NSN 6145-00-997-7051
NSN 6320-00-261-9136
NSN 6220-01-320-2641