Carriage bolts possess a unique design with a squared shank that locks within the hole, preventing rotation and providing a secure fastening. These bolts include a cylindrical head with a square or hexagonal recess, designed to be driven by a wrench or socket. DIN 603 carriage bolts conform with the stringent standards set by the German Institute f… Read More


This specification, EN 14399:2005, defines the requirements for high-strength structural bolted assemblies. It addresses a wide range of bolted joints used in engineering applications. The standard outlines guidelines for the design, manufacture, inspection, and testing of bolted assemblies to ensure their reliability. It also specifies the element… Read More


DIN 931 specifies the standards for hex head fasteners. These fixings are widely employed in diverse applications, from structural engineering toassembly. The DIN 931 standard covers dimensions such as length and thread form. It also establishes criteria for material composition and tolerances. Adhering to DIN 931 ensures durable connections and … Read More