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 5915-01-259-5705
NSN 5935-00-419-4517
NSN 5996-00-766-0814
NSN 5990-01-591-8797
NSN 5905-00-194-2557
NSN 5945-00-205-9997
NSN 5930-00-468-8320
NSN 6320-01-366-5157
NSN 5950-01-138-6438
NSN 5915-00-923-1364
NSN 4140-00-696-4556
NSN 5975-00-792-7364