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 5950-01-415-4288
NSN 5985-00-137-4328
NSN 5835-01-108-4980
NSN 5895-01-406-4601
NSN 5930-01-566-6056
NSN 5975-01-065-4863
NSN 6110-01-334-5235
NSN 5895-01-508-7853
NSN 5975-01-131-9492
NSN 5975-00-707-6245
NSN 5835-01-111-9838
NSN 6220-00-114-4953