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 5905-01-651-1702
NSN 5895-01-325-4221
NSN 5910-00-226-1123
NSN 6685-01-567-1166
NSN 6685-00-186-0190
NSN 5990-00-324-4454
NSN 6110-01-111-2614
NSN 5930-01-357-5415
NSN 4140-01-507-3172
NSN 5996-01-578-7409
NSN 5930-01-466-7429
NSN 5855-00-147-2508