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 6145-01-025-1822
NSN 5985-01-260-9482
NSN 5935-01-415-6864
NSN 6145-01-379-6140
NSN 6105-00-241-9035
NSN 6145-01-488-9477
NSN 6610-00-329-3534
NSN 5910-01-343-0289
NSN 6645-01-179-0243
NSN 6645-01-262-8493
NSN 6135-00-519-1325
NSN 6150-01-143-9033