Carriage bolts feature a unique design with a squared shank that remains within the hole, preventing rotation and guaranteeing 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 adhere to the stringent standards set by the German Institute

DIN 931 defines the requirements for six-sided head fasteners. These nuts are commonly used in numerous fields, from automotive engineering tomanufacturing. The DIN 931 standard covers dimensions such as diameter and thread pitch. It also defines standards for material grade and accuracy. Following DIN 931 ensures reliable connections and enhance