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 5998-01-435-4443
NSN 6240-01-381-5541
NSN 5935-00-734-8560
NSN 6650-01-423-3767
NSN 5965-01-153-1965
NSN 5925-00-642-5253
NSN 6220-00-937-5906
NSN 6645-01-091-9363
NSN 5960-01-202-6610
NSN 6130-00-431-8198
NSN 5930-01-108-3258
NSN 5835-01-219-0586