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 5960-01-395-6939
NSN 6105-01-605-7245
NSN 6240-00-082-1142
NSN 5996-01-287-8311
NSN 6105-00-275-0826
NSN 5960-01-224-7151
NSN 5975-01-461-1433
NSN 5960-00-937-9353
NSN 5855-01-271-6617
NSN 6650-01-442-0267
NSN 6130-01-487-7835
NSN 5930-01-217-7482