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 5975-00-428-1683
NSN 5985-00-597-2966
NSN 5930-01-647-0914
NSN 6645-00-226-2270
NSN 5915-01-367-8614
NSN 5855-01-446-0527
NSN 5975-01-229-0979
NSN 5960-01-177-0338
NSN 5930-01-579-2194
NSN 6610-01-181-4398
NSN 5915-01-633-9845
NSN 6105-01-096-4883