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 6145-00-840-6685
NSN 5990-00-473-1809
NSN 5935-01-094-7144
NSN 5930-01-643-1292
NSN 6130-00-125-5138
NSN 5975-01-113-3002
NSN 6110-01-027-0091
NSN 6320-01-462-2295
NSN 4140-01-586-9605
NSN 5915-01-614-7157
NSN 6145-00-820-9982
NSN 5920-01-656-5648