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 6620-01-465-7615
NSN 6220-01-024-9444
NSN 5905-00-222-3784
NSN 5945-00-262-2968
NSN 5998-00-278-4481
NSN 5990-00-689-2949
NSN 5985-00-466-2404
NSN 6135-00-993-6823
NSN 5990-00-499-9816
NSN 5915-01-620-4302
NSN 5910-00-237-5250
NSN 5855-01-477-5332