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 6105-01-565-0333
NSN 5895-01-361-4179
NSN 5998-01-457-2839
NSN 5835-01-313-6087
NSN 5855-01-544-4401
NSN 5975-01-444-1703
NSN 6645-00-246-4934
NSN 5910-00-239-3191
NSN 6135-00-269-5843
NSN 6320-01-478-9351
NSN 6135-01-121-3225
NSN 6220-01-648-2184