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 5930-00-851-4196
NSN 5998-00-150-2634
NSN 6150-01-221-8548
NSN 5990-00-506-8315
NSN 6130-01-227-1714
NSN 6220-01-106-3215
NSN 6110-01-546-6925
NSN 5935-00-369-1092
NSN 5925-01-236-0468
NSN 6650-01-442-7893
NSN 6220-01-327-4999
NSN 6220-01-565-3212