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 6110-00-663-4054
NSN 5996-00-563-4251
NSN 6220-01-258-8185
NSN 6240-01-323-7032
NSN 5925-01-533-7003
NSN 5915-00-954-6807
NSN 2925-01-267-1598
NSN 5835-01-406-0513
NSN 5920-01-308-8582
NSN 5985-01-196-6144
NSN 6320-01-343-2482
NSN 5910-00-952-0565