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 5835-01-456-3922
NSN 6620-00-792-0795
NSN 6685-00-883-4608
NSN 5835-01-426-6573
NSN 5895-01-013-4858
NSN 6135-01-531-1413
NSN 6610-01-385-1771
NSN 6145-01-067-8619
NSN 6150-01-058-6379
NSN 6320-00-857-4073
NSN 5998-00-928-2189
NSN 5895-01-446-8656