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 7035-01-038-9970
NSN 6240-00-235-5159
NSN 6320-01-159-2211
NSN 6320-01-322-8340
NSN 5910-01-633-9963
NSN 5950-00-470-9402
NSN 5855-01-463-9401
NSN 2925-01-261-0701
NSN 5930-01-255-4490
NSN 6130-01-158-6139
NSN 5960-01-054-9639
NSN 5985-01-328-8006