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 6240-01-111-5623
NSN 5985-00-168-4616
NSN 5930-00-415-1209
NSN 5985-01-316-4591
NSN 5895-00-810-9050
NSN 5990-01-443-2931
NSN 6110-01-202-2981
NSN 5930-01-040-0502
NSN 5945-01-015-7655
NSN 5996-01-389-1092
NSN 5998-00-012-0920
NSN 5915-00-810-0164