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 5985-01-023-2797
NSN 5985-00-789-1994
NSN 5925-00-269-2685
NSN 5855-01-047-3231
NSN 5945-00-836-5175
NSN 6150-00-869-0161
NSN 5895-01-353-0188
NSN 5996-00-062-6212
NSN 6240-01-135-3874
NSN 6240-01-653-3221
NSN 6130-01-317-6906
NSN 6240-01-322-5521