Galvanised through bolts are through bolts that have been coated with a layer of zinc to protect them from rust and corrosion. Galvanisation is a process of applying a protective layer of zinc to a metal surface by dipping it in molten zinc or by using an electroplating process. Galvanised through bolts are commonly used in outdoor applications or in environments where there is exposure to moisture or corrosive elements. The zinc coating acts as a sacrificial layer, corroding before the underlying metal, thus extending the life of the bolt. Timco offers a range of galvanised through bolts that are suitable for a variety of applications. Their through bolts are made from high tensile steel and are available in different lengths and diameters to suit different requirements. When installing galvanised through bolts, it is important to ensure that the bolt is correctly sized and tightened to the appropriate torque. It is also important to avoid over-tightening the bolt, as this can damage the threads or the substrate being fastened.