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 5930-00-515-7655
NSN 5930-01-314-2271
NSN 5975-00-421-5342
NSN 5945-00-345-7762
NSN 5996-00-503-8499
NSN 5975-01-261-1652
NSN 6650-01-415-5573
NSN 6320-00-937-5625
NSN 6320-01-412-2973
NSN 5960-00-503-4000
NSN 6320-00-036-3688
NSN 6240-01-384-4868