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 6135-01-156-4627
NSN 5925-01-098-3019
NSN 5950-01-420-5166
NSN 5835-01-485-0210
NSN 5999-00-840-6361
NSN 6645-00-077-1805
NSN 5999-00-474-6119
NSN 6610-01-565-2716
NSN 5960-00-579-0298
NSN 6105-01-593-8283
NSN 5960-00-617-9312
NSN 5895-01-580-5073