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 5999-01-051-8580
NSN 5996-01-623-6268
NSN 5855-01-369-4192
NSN 5835-00-355-9581
NSN 6220-01-157-9062
NSN 5905-00-179-9596
NSN 5998-01-460-1819
NSN 5996-00-201-3763
NSN 5960-01-132-2975
NSN 6105-01-250-2977
NSN 5930-01-534-4695
NSN 5950-00-647-8231