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 5835-00-804-0569
NSN 5999-01-290-8058
NSN 5975-01-350-2050
NSN 5855-01-446-7574
NSN 5965-01-504-8199
NSN 5945-01-293-5163
NSN 6145-01-306-1353
NSN 5905-00-232-0606
NSN 6220-01-158-6556
NSN 6105-01-268-0604
NSN 6650-01-364-8504
NSN 5835-00-660-4523