Zinc plated. Looking for a strong and heavy-duty fixing when working with timber? These coach screws are tough, reliable and easy to use - with a sharp tip and coarse thread, they're easy to insert for a firm and secure fit, and the traditional hexagon head allows you to achieve even greater torque with a socket driver. These Forgefix single thread Coach Screws are Zinc plated for increased durability. Features: Used predominantly when fixing to timber in many fencing and joinery applications. Heavy duty fixing. Conforms to DIN571 standards. Traditional hexagon head suitable for use with socket drivers. Zinc Plated for improved durability. Widely used in conjunction with nylon wall plugs in particular, the satellite industry. Head: Hexagon Head. Finish: Zinc Plated. Single Thread Screw. Specifications Country of Origin: China. Pack of 10.