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 5996-00-518-4880
NSN 6145-00-360-7760
NSN 5895-00-005-0306
NSN 6650-01-436-1173
NSN 6145-00-448-1636
NSN 6320-01-564-0893
NSN 5925-01-609-6270
NSN 5996-01-586-4061
NSN 5895-00-427-6159
NSN 5915-01-238-4673
NSN 7035-01-654-1480
NSN 6610-00-987-0680