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 6135-01-648-4875
NSN 6650-00-140-8776
NSN 6105-01-130-5901
NSN 6320-01-414-3515
NSN 5975-00-126-5724
NSN 6320-01-473-9024
NSN 5905-00-599-8736
NSN 5960-01-495-0859
NSN 6685-01-128-6935
NSN 5998-01-592-3058
NSN 6220-01-554-2501
NSN 5925-01-503-3233