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 6105-00-404-7656
NSN 6240-01-317-7078
NSN 5985-00-862-8110
NSN 4140-01-544-0096
NSN 6240-00-630-8069
NSN 6685-01-050-8759
NSN 5945-01-551-7889
NSN 6620-00-466-2314
NSN 6105-01-415-4844
NSN 6620-01-388-8955
NSN 5835-00-351-9459
NSN 5925-01-369-2816