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 5945-01-650-6411
NSN 5855-01-329-6087
NSN 6150-01-218-4974
NSN 5910-00-246-3561
NSN 5905-01-131-2161
NSN 5910-01-330-7116
NSN 6685-01-319-9828
NSN 6645-00-150-6526
NSN 6650-01-447-2858
NSN 2925-00-152-1825
NSN 6130-01-043-4066
NSN 5905-01-305-7549