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 6610-01-156-0810
NSN 5998-01-386-7017
NSN 5945-00-805-5361
NSN 5895-01-322-6839
NSN 6610-01-469-6235
NSN 5925-00-488-2741
NSN 5835-01-384-3206
NSN 6620-00-924-4369
NSN 5960-01-349-5525
NSN 6645-01-655-8115
NSN 6110-00-174-7836
NSN 5985-01-208-8254