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 6130-01-467-9075
NSN 6240-01-446-6315
NSN 5945-01-654-2013
NSN 5855-01-114-3513
NSN 5915-00-240-2822
NSN 6650-00-877-1797
NSN 5960-00-256-3622
NSN 5945-01-458-9714
NSN 5905-01-350-3275
NSN 6145-01-634-0388
NSN 6620-01-571-7727
NSN 5905-01-382-9375