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 6145-01-011-8251
NSN 5915-01-592-0584
NSN 5895-01-068-2722
NSN 6650-01-459-8575
NSN 5960-00-581-8342
NSN 6240-01-157-2935
NSN 6685-01-515-8092
NSN 5975-00-739-6515
NSN 2925-00-188-5003
NSN 5950-01-445-5586
NSN 2925-01-541-5031
NSN 6320-00-186-6452