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 6685-01-115-9119
NSN 2925-01-159-0506
NSN 6320-01-631-7828
NSN 5960-01-141-5790
NSN 5895-00-734-5401
NSN 6130-01-634-0603
NSN 5990-01-485-0260
NSN 5960-00-136-7046
NSN 5855-01-010-4921
NSN 6110-01-210-5607
NSN 6150-01-032-2916
NSN 5990-00-900-0672