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 5905-01-156-8677
NSN 7035-00-616-4410
NSN 6650-01-602-7567
NSN 6645-00-632-0736
NSN 5930-01-573-5321
NSN 5925-00-250-2907
NSN 5950-00-711-3374
NSN 5925-01-420-7589
NSN 5998-01-353-9290
NSN 6220-00-917-8170
NSN 6220-01-551-1681
NSN 5945-01-614-6567