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 6145-00-889-9764
NSN 5990-00-446-0518
NSN 5996-01-642-9407
NSN 6110-00-763-7152
NSN 6110-01-087-0439
NSN 6610-00-343-9331
NSN 5925-01-275-2954
NSN 5920-00-481-1419
NSN 5935-00-967-1607
NSN 6105-00-059-3706
NSN 6645-00-542-1734
NSN 6240-01-487-6459