This standard, EN 14399:2005, defines the criteria for high-strength structural bolted assemblies. It addresses a comprehensive range of bolted joints used in engineering applications. The standard provides guidelines for the design, production, inspection, and testing of bolted assemblies to ensure their performance. It also specifies the elements

DIN 931 specifies the specifications for hex head bolts. These fixings are commonly used in diverse applications, from mechanical engineering toassembly. The DIN 931 standard covers sizes such as diameter and thread type. It also establishes requirements for material composition and tolerances. Adhering to DIN 931 ensures reliable connections and