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 6145-00-414-5315
NSN 5930-01-476-8406
NSN 6150-01-462-0827
NSN 5935-01-520-6564
NSN 6145-01-642-6944
NSN 5996-01-387-3414
NSN 5835-00-411-0591
NSN 6150-01-634-0575
NSN 7035-00-763-6180
NSN 6145-01-119-0547
NSN 5855-00-688-9954
NSN 6110-00-111-2761