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 5999-01-423-8852
NSN 6110-01-605-3352
NSN 6150-00-959-4241
NSN 5920-01-120-9282
NSN 6135-01-334-3935
NSN 6110-01-372-8920
NSN 5925-00-819-3985
NSN 5925-01-293-9931
NSN 5950-01-327-3599
NSN 5910-01-434-1657
NSN 6610-01-442-1785
NSN 6220-00-942-8585