Hexagon screw according to DIN EN ISO 4017, including toothed flange nut according to DIN EN 1661. The strength class of the screw is stamped on the screw head. Especially for connections that have to transfer vertical loads through friction, it is essential to pay attention to the screw tightening torque and to check it with a torque wrench! In product combinations (hexagon screw with nut), the lower strength class must be used to determine the torque. For use in functional maintenance or for suspended ceilings with fire protection requirements (model pipe system guideline MLAR 2/2015), please observe additional regulations! Dimensions (approx. dimensions) Thread: M 10 Screw length: 80 mm Screw strength class: 8.8 Nut strength class: 8 Screw tightening torque: 48 Nm Material: Steel, hot-dip galvanized according to DIN EN ISO 10684