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 6135-01-069-2482
NSN 7035-00-096-9986
NSN 6130-01-564-7488
NSN 5935-01-379-1366
NSN 5915-01-545-7642
NSN 5895-01-411-6024
NSN 6145-00-188-3657
NSN 5990-00-827-4891
NSN 5905-01-519-1933
NSN 5905-01-318-3976
NSN 6150-01-026-5364
NSN 5920-00-063-0532