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 5965-01-063-7894
NSN 5905-01-209-6737
NSN 6110-01-437-1230
NSN 5935-00-418-3307
NSN 5975-00-190-4421
NSN 5990-01-442-3520
NSN 2925-01-375-9487
NSN 6145-00-135-1436
NSN 6610-01-226-7612
NSN 5998-00-659-9533
NSN 5998-01-462-8835
NSN 6685-01-439-0755