Coach Screws, also referred to as lag screws, are heavy-duty fasteners designed with a tapered shank, deep coarse threads, and a sharp pointed tip, making them ideal for wood-to-wood or wood-to-metal connections. These screws typically feature a square or hexagonal head, allowing for strong torque application using standard wrenches or sockets.
Engineered for structural and construction applications, coach screws are widely used in timber framing, fencing, decking, and heavy-duty wooden assemblies. The unthreaded portion of the shank ensures a tight grip, drawing materials together securely when driven into pre-drilled holes.
Available in both metric and imperial sizes, Coach Screws can be manufactured from a range of materials including:
Carbon Steel (zinc plated)
Stainless Steel A2 / A4 (304 / 316)
Duplex 2205
Brass, Copper, Titanium, and more.
These screws are produced in compliance with DIN 571 and ASME B18.2.1 standards, ensuring dimensional accuracy and reliable performance in structural applications.