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 5960-01-516-7264
NSN 7035-01-380-0547
NSN 5855-01-286-9928
NSN 6645-01-160-4256
NSN 5920-01-382-5323
NSN 5895-01-497-9462
NSN 6150-01-452-9050
NSN 6320-00-539-9283
NSN 5965-01-258-5662
NSN 5920-01-040-7718
NSN 6645-01-576-9896
NSN 5975-01-540-8338