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 5905-01-364-4470
NSN 6685-01-612-5597
NSN 5930-01-430-7186
NSN 4140-01-303-1338
NSN 6685-01-579-3407
NSN 6110-00-451-1462
NSN 6685-01-306-8993
NSN 2925-00-536-4574
NSN 5996-01-012-5716
NSN 6130-00-141-0292
NSN 5930-00-901-1353
NSN 5965-00-807-2491