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 5999-00-269-3663
NSN 5910-00-892-3187
NSN 5998-01-589-3601
NSN 5835-01-642-4705
NSN 6105-01-189-4885
NSN 6650-01-111-6825
NSN 5996-01-390-8845
NSN 6110-01-010-4551
NSN 6650-01-015-6133
NSN 6110-00-393-1212
NSN 6620-01-538-2294
NSN 6130-00-489-9835