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 6620-00-538-8746
NSN 5930-01-456-8891
NSN 5975-01-523-7638
NSN 6320-01-352-8084
NSN 5930-01-542-9182
NSN 2925-01-281-6403
NSN 6130-00-997-7441
NSN 5835-00-518-4507
NSN 5945-01-198-3892
NSN 5998-01-411-5742
NSN 5895-01-524-8174
NSN 6150-01-505-5756