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 6110-01-400-4207
NSN 2925-01-411-4666
NSN 6130-01-523-2864
NSN 6320-00-925-0558
NSN 6110-01-446-7482
NSN 5998-00-369-7285
NSN 6240-01-579-4734
NSN 5895-00-617-6340
NSN 6105-00-841-5202
NSN 5910-01-506-1913
NSN 2925-01-477-8037
NSN 5910-00-868-6676