Carriage bolts feature a unique design with a squared shank that remains 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 f… Read More


This specification, EN 14399:2005, defines the requirements for high-strength structural bolted assemblies. It covers a comprehensive range of bolted connections used in civil applications. The standard provides methods for the design, fabrication, inspection, and testing of bolted assemblies to ensure their reliability. It also specifies the compo… Read More


DIN 931 defines the specifications for hex head fasteners. These bolts are widely employed in various applications, from automotive engineering tomanufacturing. The DIN 931 standard covers parameters such as length and thread pitch. It also defines standards for material quality and accuracy. Following DIN 931 ensures reliable connections and boo… Read More