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 5915-00-813-1845
NSN 6135-00-134-6648
NSN 5999-01-254-8514
NSN 6685-00-968-1953
NSN 6130-00-132-1839
NSN 5996-00-979-5929
NSN 5930-01-132-3959
NSN 6145-00-216-6613
NSN 5910-00-554-1422
NSN 5998-01-521-1240
NSN 5930-01-649-1517
NSN 5990-01-419-0661