This standard, EN 14399:2005, defines the criteria for high-strength structural bolted assemblies. It deals with a wide range of bolted joints used in structural applications. The standard provides procedures for the design, fabrication, inspection, and testing of bolted assemblies to ensure their performance. It also specifies the components that

DIN 931 defines the specifications for hexagonal head fasteners. These fixings are widely employed in diverse fields, from mechanical engineering toconstruction. The DIN 931 standard covers sizes such as length and thread form. It also establishes criteria for material composition and tolerances. Complying with DIN 931 ensures robust connections