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 5930-01-463-8698
NSN 5985-00-782-0423
NSN 5998-01-241-2593
NSN 5855-01-484-6507
NSN 5945-01-624-0018
NSN 5920-01-387-7779
NSN 5925-00-581-6902
NSN 5996-00-577-0483
NSN 6645-01-102-2321
NSN 6685-00-998-0354
NSN 5895-01-167-2970
NSN 5915-00-552-4355