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 2925-01-599-1901
NSN 5960-01-038-5637
NSN 6645-01-118-2058
NSN 6130-01-641-7201
NSN 5985-01-300-8525
NSN 5835-01-090-6712
NSN 5998-01-210-7860
NSN 5965-01-592-2436
NSN 5965-01-398-0779
NSN 7035-00-703-3535
NSN 5910-00-713-0152
NSN 6150-01-195-6931