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


DIN 931 defines the standards for hex head bolts. These fixings are commonly used in numerous fields, from mechanical engineering toassembly. The DIN 931 standard covers dimensions such as head size and thread type. It also sets requirements for material grade and precision. Following DIN 931 ensures reliable connections and enhances the integrit… Read More