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 5855-01-147-4785
NSN 2925-00-852-6708
NSN 5930-01-116-3346
NSN 6620-01-048-4145
NSN 4140-00-723-6418
NSN 6650-00-292-9106
NSN 5975-01-486-6598
NSN 5930-01-363-9996
NSN 5996-00-814-7376
NSN 6110-01-076-4060
NSN 6135-00-128-1633
NSN 6150-00-402-3077