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 5950-01-481-1075
NSN 5985-01-432-4584
NSN 6105-00-391-5114
NSN 6650-01-406-4451
NSN 5965-01-286-6548
NSN 2925-00-684-7708
NSN 5905-01-336-3790
NSN 6620-00-273-8735
NSN 5996-01-383-1478
NSN 6105-01-514-7310
NSN 6220-00-126-2691
NSN 2925-01-218-5556