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 6145-01-398-0607
NSN 5895-00-359-3834
NSN 5998-01-455-1794
NSN 6135-01-546-4588
NSN 5910-01-098-9198
NSN 6650-00-908-5193
NSN 5999-00-903-3426
NSN 5965-01-335-6630
NSN 5920-01-576-9869
NSN 5975-01-634-0678
NSN 5965-01-461-2850
NSN 5905-01-581-5562