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 5998-00-633-5169
NSN 5975-01-501-6362
NSN 6135-00-921-6487
NSN 5935-01-252-1455
NSN 5915-01-368-1168
NSN 5945-01-163-5198
NSN 5965-01-098-7028
NSN 6220-01-409-1585
NSN 5990-01-621-2788
NSN 6320-01-616-0843
NSN 6685-00-279-3620
NSN 6650-00-565-1659