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 2925-00-156-0999
NSN 6685-01-250-8200
NSN 5910-00-880-9223
NSN 5975-01-364-8662
NSN 6320-01-478-9351
NSN 5960-01-462-7704
NSN 5985-00-861-7896
NSN 6650-01-083-1969
NSN 5920-00-067-9115
NSN 5930-00-038-7775
NSN 6220-01-658-6930
NSN 5915-01-411-5355