When it comes to ensuring the longevity of wooden urban benches, the choice of fasteners is absolutely critical. We exclusively use high-grade, 304 or 316 stainless steel screws and bolts. Why? Because they offer superior corrosion resistance against rain, humidity, and the salts used for de-icing streets in winter. Unlike standard steel, which can rust and stain the wood, stainless steel maintains its integrity, preventing weak points and structural failure.
Beyond the material, the design of the fastener matters. We prefer screws with features like star-drive or square-drive heads, which provide a much more secure fit and reduce the risk of stripping during installation. For connecting major structural components, such as the legs to the seat frame, we often use through-bolts with washers. This distributes the load more evenly and creates a stronger joint that can withstand constant use and shifting weights.
We also pay close attention to the installation process. Pilot holes are always drilled to prevent the wood from splitting, especially near the ends of the boards. Furthermore, we ensure there is a slight gap between wooden components to allow for natural expansion and contraction with changes in temperature and humidity. This prevents the wood from warping or cracking around the fasteners.
In short, the secret isn't a single magical fastener, but a system: corrosion-resistant stainless steel hardware, robust connection designs like through-bolts, and meticulous installation that respects the natural movement of wood. This comprehensive approach is what guarantees our benches remain safe, sturdy, and beautiful in demanding urban environments for a decade or more.