A nonmetallic unthreaded item generally round in cross-sectional shape which, when placed on/in a machined-out portion of the threads of a screw or bolt, or inserted into the machined-out portion of the threads of a nut, locks the item, to which it is fixed, to the attached mating member and prevents loosening during excessive vibration. Excludes bolt, self-locking; nut, self-locking (as modified); screw, self-locking; and insert, screw thread.
NSN 5905-00-846-6080
NSN 6240-00-594-7138
NSN 5835-00-610-7623
NSN 5910-01-150-8002
NSN 5895-01-213-2387
NSN 6685-00-164-7014
NSN 5960-01-449-1310
NSN 6610-01-094-8442
NSN 5855-00-361-0167
NSN 5945-01-323-7171
NSN 5990-00-995-6071
NSN 5910-01-633-9963