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 6105-01-045-1015
NSN 5915-00-001-3117
NSN 2925-01-139-5144
NSN 6645-01-645-9117
NSN 6220-01-569-6742
NSN 5965-00-079-0928
NSN 5930-00-391-2099
NSN 5960-00-165-3038
NSN 5930-01-123-9108
NSN 5910-00-830-8852
NSN 5925-01-424-2963
NSN 5965-01-045-0247