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 5998-01-576-9769
NSN 6105-01-435-8017
NSN 6110-00-816-1823
NSN 6110-01-080-6198
NSN 5905-00-159-2749
NSN 6220-00-567-6862
NSN 6685-01-394-4984
NSN 5999-01-054-4099
NSN 5945-01-098-5319
NSN 4140-01-306-0248
NSN 5950-00-167-5035
NSN 5905-01-239-6333