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 5950-01-202-8456
NSN 5999-00-740-8259
NSN 6130-01-258-0354
NSN 6130-01-602-8991
NSN 6150-01-044-3377
NSN 5920-01-133-5286
NSN 5960-00-171-9575
NSN 5945-01-551-1250
NSN 5925-01-480-6701
NSN 5990-00-497-9234
NSN 6130-01-367-6010
NSN 5965-01-512-8842