class 8 carbon steel nut
Class 8 dry hex nuts are made of steel grade with a tensile strength of 800 N/mm2. Dry hex nuts are used in the connections of half rib and full dry hex bolts, dry Allen screws and dry metric screws. In the chemical composition of this steel alloy, an average percentage of carbon is used, and in order to increase the mechanical capabilities of the dry nut, heat hardening is also used.