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 5930-01-096-8979
NSN 5915-01-650-3482
NSN 5920-01-407-8701
NSN 5965-00-594-3115
NSN 5930-00-504-0151
NSN 6650-00-849-9689
NSN 5930-00-577-0172
NSN 6645-00-558-0028
NSN 5996-01-340-5268
NSN 6650-00-641-6139
NSN 4140-01-104-0743
NSN 5930-00-861-2725