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 6105-01-035-1065
NSN 5910-00-521-0524
NSN 5999-01-139-3720
NSN 6110-01-398-1507
NSN 5960-01-386-3855
NSN 5996-01-290-0988
NSN 5930-00-149-9843
NSN 6110-01-524-7465
NSN 4140-01-085-4965
NSN 5855-01-539-0639
NSN 5910-01-239-8855
NSN 4140-00-804-5667