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 6610-01-633-8931
NSN 6130-01-634-0603
NSN 6610-00-104-8223
NSN 6130-01-334-5863
NSN 5985-00-394-5888
NSN 6685-00-086-4930
NSN 6135-01-554-1842
NSN 5975-01-342-6061
NSN 6650-01-396-2145
NSN 5960-01-024-7918
NSN 5999-01-160-7905
NSN 5855-00-484-8638