The SCI A2 Countersunk Screw from Rothoblaas. Thanks to the 3 THORNS tip, minimum installation distances are reduced. More screws can be used in less space and larger screws in smaller elements. Costs and time for project implementation are reduced. New tip, special asymmetrical umbrella thread, elongated reamer cutter and under-head cutting ribs provide the screw with higher torsional strength and safer screwing. A2 austenitic stainless steel. It offers high corrosion resistance. Suitable for outdoor applications up to 1 km from the sea in class C4 on most acid woods in class T4.
