A soft metal or nonmetal sleeve, designed to mate with a pin-rivet. it may include an external wrenching facility which breaks off at a perdetermined torque to form a head.
NSN 6650-01-421-2370
NSN 4140-01-219-9700
NSN 5910-01-094-6168
NSN 6150-01-331-5385
NSN 5835-01-612-4753
NSN 6150-00-659-1310
NSN 5935-01-581-0706
NSN 2925-00-275-1807
NSN 5905-00-839-3823
NSN 6105-01-406-2077
NSN 6320-00-553-8427
NSN 5998-01-068-3352