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 4140-01-579-3686
NSN 6320-01-442-3428
NSN 6240-01-382-1279
NSN 5925-00-081-9135
NSN 2925-01-085-0691
NSN 6130-01-586-2386
NSN 6145-01-465-4770
NSN 6105-00-097-1371
NSN 5999-00-518-5419
NSN 2925-00-167-6762
NSN 6240-01-163-2813
NSN 6110-01-566-8069