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 5950-00-625-9692
NSN 5895-01-476-7344
NSN 5998-00-938-1625
NSN 5975-01-290-9387
NSN 5835-01-527-2629
NSN 5935-01-534-7773
NSN 5945-00-244-1579
NSN 6145-00-019-0047
NSN 5925-01-476-3541
NSN 6130-00-969-0458
NSN 4140-01-289-7912
NSN 5990-01-485-0260