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 6220-00-030-6728
NSN 5905-01-281-2256
NSN 7035-01-462-1957
NSN 2925-01-043-9786
NSN 6105-00-375-8267
NSN 5999-01-438-8803
NSN 5910-01-548-8432
NSN 6145-01-444-1668
NSN 6105-01-438-5077
NSN 5998-00-551-7438
NSN 6650-00-070-5952
NSN 4140-01-339-7625