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 5910-01-389-1145
NSN 6240-01-112-7577
NSN 6620-00-420-1061
NSN 5996-01-352-9434
NSN 5915-01-122-2988
NSN 5910-00-842-3007
NSN 6685-00-361-9797
NSN 6105-01-431-8959
NSN 6130-01-605-2047
NSN 6105-00-580-1434
NSN 6110-01-090-2583
NSN 6130-01-210-4736