ZENITH Hot Dipped Galvanised Cup Head Bolts & Nuts are perfect for general purpose construction applications involving fastening timber to timber, metal to timber, or metal to metal. A highly versatile product, they can be used for retaining walls, gates and fences, pergolas, outdoor furniture, and more. Hot Dipped Galvanised coating provides high protection against rust and corrosion, suitable for use in internal and external environments.