The advanced timber fixing screw features a wafer head with a Torx-compatible insert, designed specifically for decking construction. It includes a reamer to prevent jacking, a serrated thread to prevent splitting, and a quick start type 17 slash point. With a 40º deep single thread, synthetic lubrication, and surface hardening, this screw offers superior performance. It is widely used in exterior timber, fencing, and landscaping applications. The screw has a multi-layer Ruspert coating, salt spray tested to 1000 hours.