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 5965-00-568-5802
NSN 6145-01-056-5515
NSN 7035-00-763-6180
NSN 5985-01-011-7909
NSN 6220-01-529-1169
NSN 5960-01-073-4201
NSN 6240-00-612-0883
NSN 5965-01-633-8849
NSN 5950-00-187-9711
NSN 5915-01-305-8622
NSN 5920-01-186-6335
NSN 5998-01-412-8054