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 6620-01-430-7104
NSN 5895-01-149-3208
NSN 5925-00-516-2449
NSN 6135-01-444-6824
NSN 6240-01-483-7761
NSN 5910-01-187-4634
NSN 5915-00-541-5589
NSN 5965-01-385-4235
NSN 6650-01-141-1582
NSN 6135-00-823-3034
NSN 6240-00-152-6289
NSN 6240-01-267-6499