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 6110-01-586-3479
NSN 6130-01-192-0961
NSN 6320-01-512-2031
NSN 5950-01-234-4778
NSN 6320-01-255-2096
NSN 5985-00-081-3456
NSN 5998-01-465-8783
NSN 6620-00-635-7347
NSN 5945-00-185-6609
NSN 5950-01-523-9173
NSN 6240-01-014-7530
NSN 5985-01-249-6452