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 5905-01-330-7747
NSN 2925-00-890-9837
NSN 6610-01-559-5073
NSN 5950-01-278-8205
NSN 5935-01-429-8697
NSN 5925-01-125-5078
NSN 5855-00-079-2370
NSN 6110-00-248-7475
NSN 6685-01-488-6932
NSN 6220-01-299-6790
NSN 5835-01-383-1313
NSN 6240-01-099-2472