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 5895-01-341-2563
NSN 5925-01-353-9106
NSN 5950-00-472-7278
NSN 4140-00-293-3619
NSN 4140-00-155-8012
NSN 5975-01-029-4176
NSN 6220-01-391-4492
NSN 5935-00-332-1498
NSN 5999-01-023-8776
NSN 5965-01-462-3001
NSN 6645-01-564-7129
NSN 5935-01-082-3098