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 6645-01-542-6159
NSN 6220-00-225-3780
NSN 5999-00-779-6268
NSN 5920-01-430-2530
NSN 2925-00-293-7213
NSN 5950-01-445-8905
NSN 5855-00-466-2309
NSN 6320-01-212-8749
NSN 6610-01-478-9183
NSN 5835-01-502-9228
NSN 6610-00-244-2816
NSN 6685-00-227-6750