Carriage bolts are robust, smooth-headed fasteners designed for secure, tamper-resistant fixing in timber and metal applications, making them ideal for construction, fencing, decking, and outdoor projects. Featuring the classic DIN 603 round head with a square neck to prevent rotation, these bolts are commonly paired with hex full nuts (DIN 934) and, in some assemblies, Form A washers (DIN 125-A) for added load distribution. Available in hot dipped galvanised, exterior silver, green exterior finishes, and A2 stainless steel, they offer reliable strength and corrosion resistance across interior and exterior environments, ensuring long-lasting performance in demanding conditions.