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 6645-01-370-5264
NSN 5975-00-807-9527
NSN 5998-01-275-2093
NSN 5910-01-050-8185
NSN 6150-01-117-4773
NSN 5975-01-390-6361
NSN 2925-01-143-0092
NSN 2925-00-829-9082
NSN 5996-01-467-1592
NSN 5855-01-278-8922
NSN 5998-01-025-7448
NSN 6610-01-056-7499