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 5945-01-513-8305
NSN 5895-00-452-7134
NSN 5835-01-501-0526
NSN 6135-00-078-9931
NSN 6130-00-202-0027
NSN 5950-00-116-6182
NSN 5835-00-834-1286
NSN 5985-01-512-1867
NSN 2925-01-203-0493
NSN 5998-00-999-2178
NSN 6620-00-620-3089
NSN 6145-00-229-4509