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 7035-01-518-0561
NSN 6620-01-266-5545
NSN 6145-01-132-6843
NSN 5960-01-264-2087
NSN 5855-00-930-8828
NSN 5975-01-227-5543
NSN 5998-01-408-5919
NSN 5855-01-448-9794
NSN 6620-01-283-1338
NSN 6105-01-429-0232
NSN 5950-01-391-9097
NSN 5930-00-274-7167