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 6220-01-472-5863
NSN 6135-01-452-2421
NSN 5920-00-783-7859
NSN 6130-00-887-4652
NSN 2925-01-443-5929
NSN 6685-01-096-1714
NSN 6150-01-652-0252
NSN 5925-01-416-9204
NSN 6240-00-758-0874
NSN 5960-01-027-8833
NSN 5835-01-632-6627
NSN 6150-01-490-6032