Decking screw cylindrical (external) for wood joist C4

Patented design with a sharp tip and threads adapted for anchoring in wood. The threads grip immediately and pull the screw into the decking. The threads under the head secure the decking, while the head sinks in by itself. Suitable for the installation of decking, patios, fences, etc. The screw's unique driving properties have been achieved by equipping the screw with a cutting drill tip, as well as angled and longitudinal cuts between the threads.