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


DIN 931 defines the standards for six-sided head screws. These fixings are widely employed in numerous industries, from structural engineering toassembly. The DIN 931 standard covers dimensions such as head size and thread pitch. It also establishes criteria for material quality and precision. Following DIN 931 ensures reliable connections and en… Read More