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 6110-01-277-4595
NSN 6645-01-267-1868
NSN 5960-01-054-3752
NSN 5895-01-104-3125
NSN 5945-01-386-5718
NSN 5895-01-508-1844
NSN 5935-01-343-9154
NSN 6645-01-537-1066
NSN 5996-01-350-4139
NSN 5895-01-040-0290
NSN 6685-01-032-4752
NSN 6220-01-634-0660