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 6645-01-549-8910
NSN 5998-00-358-8788
NSN 6110-01-203-5114
NSN 5950-01-089-8465
NSN 5975-00-185-5243
NSN 4140-01-483-8040
NSN 6320-00-468-8421
NSN 6650-00-266-6808
NSN 6130-01-235-7535
NSN 6105-00-003-1852
NSN 5945-01-370-4362
NSN 6145-01-206-3539