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 6320-01-544-0860
NSN 5950-01-062-4503
NSN 5920-01-387-7779
NSN 6145-01-462-1120
NSN 5998-01-610-9168
NSN 6145-00-316-2608
NSN 5999-00-855-3760
NSN 5895-01-359-2752
NSN 6620-00-269-5168
NSN 6110-01-334-5508
NSN 5990-01-210-5474
NSN 6320-01-440-8771