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 5895-00-795-0522
NSN 5920-00-137-1135
NSN 6110-01-251-9120
NSN 5920-00-968-8004
NSN 6135-00-145-8884
NSN 5990-01-050-0619
NSN 6320-01-344-6511
NSN 6145-01-607-9868
NSN 5895-00-456-6242
NSN 6645-01-239-4619
NSN 5999-01-628-0273
NSN 5996-00-562-7033