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 5930-01-634-0101
NSN 5905-01-361-1514
NSN 6150-00-187-1368
NSN 6145-01-417-6482
NSN 5905-01-010-1806
NSN 5915-01-337-1102
NSN 6150-00-335-7189
NSN 5985-01-640-6279
NSN 5925-01-028-6504
NSN 5999-01-141-6384
NSN 6110-00-443-9624
NSN 5945-00-889-1494