Hexagon Head Coach Screw (DIN571)

Product Code DIN571

Coach screws are heavy duty screws designed for metal to timber connections, or to join heavy timbers. Coach screws are also known as lag bolts or lag screws, and they have a square or hexagonal head engineered to be used with a wrench, spanner, or pliers.

Suitable for use in wood or for a secure fixing when used with a nylon plug.

Coach screws consist of an externally threaded cylindrical shaft that tapers to a point, with a head at the other end. When coach screws are driven into timber, the threads bite into the wood, while the head stops the screw from going all the way through as it provides compression.



    Hexagon Head Coach Screws, also known as coach bolts and specified by DIN 571, are essential fasteners used both in woodworking and construction. The “DIN 571” designation refers to the German Industrial Standard that outlines the specifications for these screws. They are heavy-duty wood screws with a hexagon head, so they can withstand much higher insertion torque. They are commonly used for fastening metal to timber or heavy-duty timber to timber applications in the construction industry.

    Key Features:

    • Head Style: These screws feature a hexagonal head that can be tightened with a wrench or socket, ensuring a secure fit.
    • Thread Type: They are equipped with a coarse, fully threaded shaft, providing a strong grip in wood and other materials.
    • Material: Typically constructed from carbon steel, which offers durability and strength for various applications.
    • Length and Diameter: Available in a range of lengths and diameters to suit different needs, with length measured from the underside of the head to the screw’s tip.
    • Applications: Ideal for woodworking, carpentry, and construction, these screws are commonly used for creating robust joints, such as securing timber beams, fence posts, and structural components.

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