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 6610-01-640-9367
NSN 6220-00-379-4044
NSN 5905-01-391-4983
NSN 5985-01-076-5094
NSN 6220-01-385-7964
NSN 6135-01-238-2878
NSN 5996-01-421-3373
NSN 5915-01-469-1892
NSN 6220-01-189-1373
NSN 5935-00-715-2862
NSN 5998-00-842-4940
NSN 6220-01-009-8329