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 6220-01-096-4583
NSN 6150-01-473-6842
NSN 5960-00-593-5603
NSN 5910-01-415-5758
NSN 6650-01-099-6271
NSN 6650-01-361-9336
NSN 5996-01-070-9911
NSN 5835-00-247-0161
NSN 5935-01-102-9518
NSN 6220-01-422-3602
NSN 4140-01-435-4887
NSN 5905-01-032-4681