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 7035-00-200-5162
NSN 5960-01-252-8821
NSN 6110-01-347-9134
NSN 5930-01-640-9993
NSN 5965-00-006-8004
NSN 5985-00-630-1613
NSN 6135-00-057-2005
NSN 5950-01-227-1913
NSN 5895-00-939-7479
NSN 6650-00-163-9554
NSN 5835-01-140-9306
NSN 6650-01-462-0830