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 5990-01-485-0260
NSN 6110-00-495-8597
NSN 5925-01-643-8388
NSN 5905-00-572-9531
NSN 5835-00-393-1996
NSN 7035-00-275-5604
NSN 6620-00-280-2874
NSN 5835-00-649-9402
NSN 5965-01-575-2388
NSN 6685-00-232-3239
NSN 6645-00-547-4388
NSN 6650-01-485-8536