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 6240-01-576-9580
NSN 5965-01-326-0606
NSN 6145-01-546-5154
NSN 5999-01-151-9821
NSN 5950-01-538-5817
NSN 5905-01-451-6512
NSN 6320-00-225-7013
NSN 5985-01-225-5536
NSN 6240-00-270-4128
NSN 5895-00-228-3133
NSN 5990-00-309-0023
NSN 6110-01-015-0836