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 5920-00-185-9587
NSN 6620-00-618-1765
NSN 6110-00-596-9124
NSN 5905-01-235-8304
NSN 5905-01-630-9868
NSN 6220-00-635-8818
NSN 6130-00-838-8813
NSN 5990-01-478-8638
NSN 6610-01-353-6685
NSN 5930-00-964-9297
NSN 5975-01-140-2825
NSN 5835-01-346-9575