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 5935-01-076-4294
NSN 5915-01-061-7981
NSN 6685-01-459-8565
NSN 6105-00-419-3174
NSN 5945-00-059-7521
NSN 6610-01-221-2606
NSN 6320-00-857-4073
NSN 6610-00-719-6882
NSN 6240-01-359-2721
NSN 6610-00-207-4207
NSN 6135-01-124-2376
NSN 6110-01-572-7769