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 5985-00-293-8322
NSN 6645-00-004-8628
NSN 5935-01-506-5872
NSN 6130-01-186-6575
NSN 5950-00-357-8645
NSN 6320-00-977-3930
NSN 5996-00-465-7684
NSN 6620-01-605-2590
NSN 5950-00-079-1645
NSN 5925-01-576-2433
NSN 5945-00-295-6999
NSN 5960-00-995-9712