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 7035-01-344-1806
NSN 5935-01-360-0413
NSN 6320-01-301-4699
NSN 5985-00-285-0798
NSN 5996-01-649-2142
NSN 5998-01-147-2013
NSN 6610-00-676-2705
NSN 5915-01-415-3100
NSN 5998-01-381-2039
NSN 5999-01-126-0927
NSN 6610-00-633-4338
NSN 6620-01-469-7828