Front only
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 5920-01-534-7042
NSN 5945-00-287-8022
NSN 5985-01-382-9979
NSN 6685-01-392-8470
NSN 5950-01-436-4980
NSN 5905-01-093-8435
NSN 5990-01-485-0260
NSN 5915-01-494-3176
NSN 6145-01-293-3754
NSN 5915-01-341-3481
NSN 2925-00-696-6278
NSN 5895-01-184-3803