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 7035-00-371-7749
NSN 6620-01-594-6311
NSN 6105-01-121-4610
NSN 6135-01-494-3607
NSN 5985-00-717-3806
NSN 6110-00-236-4161
NSN 2925-01-583-4255
NSN 6645-01-256-9696
NSN 5975-00-636-4910
NSN 6320-01-352-5653
NSN 6150-00-601-3195
NSN 6650-00-958-7408