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 6610-00-119-7819
NSN 6645-00-935-7046
NSN 5895-00-893-6057
NSN 4140-01-571-9794
NSN 5975-00-541-8531
NSN 5915-00-467-9323
NSN 6110-00-479-0403
NSN 5965-01-046-9619
NSN 6240-00-643-4532
NSN 5905-00-086-9386
NSN 6650-01-275-3112
NSN 5975-01-196-7100