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 6220-01-064-9539
NSN 6610-01-171-3010
NSN 2925-00-225-5386
NSN 6220-00-340-1313
NSN 5895-01-074-7902
NSN 5990-01-175-2597
NSN 6620-00-217-7576
NSN 6220-00-252-8025
NSN 6145-00-715-5262
NSN 5985-01-432-2020
NSN 5835-01-363-4527
NSN 5960-01-015-7331