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 5996-01-430-7180
NSN 6610-00-061-7882
NSN 6610-00-663-4163
NSN 5960-00-018-3477
NSN 6145-01-130-9585
NSN 6685-01-359-8716
NSN 6105-01-434-8770
NSN 5910-00-837-9360
NSN 5985-01-133-2360
NSN 6145-00-699-8963
NSN 6685-01-443-2080
NSN 6220-00-079-2943