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 5905-01-378-0043
NSN 6240-01-159-5043
NSN 5945-01-044-9991
NSN 5910-01-181-9716
NSN 5905-00-471-3755
NSN 2925-01-262-1418
NSN 5855-01-602-9335
NSN 5895-01-268-9675
NSN 6320-01-280-5091
NSN 5950-00-137-6482
NSN 7035-01-513-3025
NSN 5975-01-045-7623