Carriage bolts feature a unique design with a squared shank that locks within the hole, preventing rotation and providing a secure fastening. These bolts comprise 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 for

DIN 931 defines the specifications for six-sided head screws. These bolts are widely employed in diverse industries, from mechanical engineering toassembly. The DIN 931 standard covers dimensions such as length and thread pitch. It also establishes standards for material grade and tolerances. Complying with DIN 931 ensures robust connections and