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 6145-01-093-0383
NSN 6150-00-021-3337
NSN 6240-01-633-2239
NSN 6685-01-423-4613
NSN 6610-01-008-9636
NSN 6685-01-538-7945
NSN 5905-01-428-9660
NSN 5915-00-233-6346
NSN 6105-00-136-2989
NSN 6130-00-866-9119
NSN 6135-00-613-1068
NSN 5945-00-648-6237