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 6220-01-434-0590
NSN 6320-01-144-3810
NSN 5965-00-434-7617
NSN 5930-01-296-6416
NSN 6130-00-462-1122
NSN 5999-00-700-9096
NSN 6105-01-439-7848
NSN 2925-01-281-6403
NSN 6130-01-452-2777
NSN 7035-01-515-3490
NSN 5925-01-327-9823
NSN 5835-01-435-4139