The universal screw is faithful to its name, a real all-rounder and universally applicable. The screw surface is coated with the Spax exclusive Wirox technology. Compared to conventional surfaces, Wirox has higher corrosion protection and much higher surface hardness, which makes it exceptionally resistant and abrasion-resistant. Spax refined with Wirox are therefore ideal for indoor and outdoor use without direct weathering, for example in carports, where they are exposed to the outside air thanks to a canopy, but not directly to the weather.