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 5910-01-097-5526
NSN 6145-01-136-1826
NSN 6220-01-116-2411
NSN 6650-00-710-8130
NSN 5950-01-217-0611
NSN 5996-01-441-7910
NSN 6645-00-825-2448
NSN 6130-00-222-2784
NSN 6220-01-483-1448
NSN 5935-01-576-0781
NSN 7035-01-559-6349
NSN 5935-01-168-2447