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 5910-01-457-4800
NSN 5996-00-392-7626
NSN 5905-01-551-4683
NSN 6105-00-692-4468
NSN 5935-01-626-8428
NSN 6685-01-580-0311
NSN 5998-00-070-5795
NSN 5905-00-740-8205
NSN 6685-00-258-9191
NSN 5999-01-614-4106
NSN 6685-01-362-9536
NSN 6110-01-335-0580