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 5935-01-435-3062
NSN 6220-01-616-9807
NSN 5905-01-578-6998
NSN 5835-01-301-0022
NSN 6320-01-543-1194
NSN 5920-00-057-5934
NSN 5835-01-632-6627
NSN 5910-01-392-4817
NSN 5990-00-568-4940
NSN 6145-00-481-0325
NSN 6130-00-799-9383
NSN 7035-01-570-5091