Coach Screw

A Coach Screw is a heavy duty screw which has a square or hexagonal head and an externally threaded cylindrical shaft that tapers to a point at the tip. They are primarily used for holding together heavy timber, fixing metal to timber and in some cases masonry or concrete. Coach screws differ to woodscrews due to their size. Woodscrews range between 3mm and 6mm in thickness. Coach screws range from 6mm to 12mm in thickness, making them a much heavier duty fixing.