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 5905-01-174-6514
NSN 6620-00-411-4983
NSN 7035-01-160-4423
NSN 5930-01-482-0541
NSN 5999-00-256-1734
NSN 5915-01-200-8283
NSN 5996-00-222-6049
NSN 6620-01-283-6961
NSN 6620-01-445-4295
NSN 5975-01-475-7901
NSN 5965-01-138-9288
NSN 5935-00-073-0677