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 5965-01-092-2698
NSN 5999-00-906-4683
NSN 2925-00-928-5931
NSN 6685-01-401-5360
NSN 6105-00-453-6762
NSN 5935-01-657-2990
NSN 5895-01-037-9857
NSN 5975-00-079-0022
NSN 6240-01-633-9357
NSN 5835-01-008-8887
NSN 6110-01-615-1894
NSN 5920-01-451-5742