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 6110-00-263-6664
NSN 6320-01-521-1764
NSN 5855-00-100-9003
NSN 5965-01-357-8259
NSN 6320-01-576-6310
NSN 6150-00-067-5957
NSN 5985-01-579-2478
NSN 4140-00-876-5532
NSN 6220-01-584-0934
NSN 6240-01-641-0816
NSN 5960-01-185-4216
NSN 6145-01-104-3358