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 5999-00-452-2558
NSN 5950-01-283-1407
NSN 5950-00-257-3482
NSN 5996-01-633-2867
NSN 5835-01-087-3960
NSN 5915-00-141-0410
NSN 5855-00-361-0167
NSN 5999-01-289-0221
NSN 5895-00-548-0124
NSN 5925-01-093-5961
NSN 5835-00-969-5771
NSN 5975-01-136-7450