HeadLOK Timber fasteners from FastenMaster are heavy duty flathead, self-drilling screws which is ideal for fixing timber decking materials. These timber fasteners come with the added benefits of a sharp gimlet point for ease of use, no counter-sinking, no pre-drilling, a patented spider drive and a guaranteed corrosion resistant coating. They are suitable for fixing decking materials, fencing, landscaping materials or any other wood to wood fixing. Available in a range of different sizes and ideal for use the Carpenters Mate No. 3 Spider Drive Tool.