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 5905-00-411-9545
NSN 5975-00-529-3835
NSN 5985-01-226-2661
NSN 6645-01-076-4655
NSN 6650-01-420-7388
NSN 5998-01-491-6703
NSN 5930-01-307-7126
NSN 5910-01-415-0273
NSN 6320-01-237-9746
NSN 5910-01-334-9759
NSN 5905-01-009-3210
NSN 5999-01-631-8745