This standard, EN 14399:2005, defines the criteria for high-strength structural bolted assemblies. It covers a wide range of bolted connections used in engineering applications. The standard establishes methods for the design, production, inspection, and testing of bolted assemblies to ensure their safety. It also specifies the elements that can be

DIN 931 defines the requirements for hex head fasteners. These fixings are commonly used in numerous applications, from structural engineering toassembly. The DIN 931 standard covers parameters such as head size and thread type. It also sets criteria for material composition and precision. Adhering to DIN 931 ensures reliable connections and impr