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 5895-01-432-3963
NSN 6145-01-300-2983
NSN 5910-00-944-8032
NSN 5925-01-350-3646
NSN 7035-01-642-1184
NSN 6240-00-660-8467
NSN 6150-00-490-9346
NSN 5835-01-193-6192
NSN 6110-01-551-1623
NSN 2925-00-927-3594
NSN 5950-00-855-0469
NSN 5920-01-208-4981