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 5835-01-449-7511
NSN 6650-01-203-4746
NSN 5895-01-024-8736
NSN 5990-00-869-2122
NSN 5910-01-083-9577
NSN 5835-00-055-0953
NSN 5915-01-167-8506
NSN 5930-01-322-9525
NSN 6610-01-274-2479
NSN 6150-01-361-9162
NSN 5996-01-501-4462
NSN 6130-01-432-0986