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 5965-01-398-9579
NSN 5935-01-303-1427
NSN 5998-01-629-5419
NSN 7035-00-153-3826
NSN 5998-01-248-0688
NSN 5965-00-855-4500
NSN 5935-01-578-7979
NSN 5835-01-319-4636
NSN 6645-00-262-7448
NSN 5930-01-501-1694
NSN 5996-00-014-7811
NSN 5895-01-210-2604