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 2925-01-469-8229
NSN 5975-00-240-5380
NSN 6130-01-199-5638
NSN 6150-00-707-3950
NSN 5905-01-373-0018
NSN 6610-01-651-7769
NSN 6650-01-207-0829
NSN 5935-00-293-1863
NSN 5910-01-359-8211
NSN 6145-01-304-1357
NSN 6220-01-622-9592
NSN 7035-00-079-7189