This standard, EN 14399:2005, defines the requirements for high-strength structural bolted assemblies. It addresses a comprehensive range of bolted assemblies used in structural applications. The standard outlines guidelines for the design, manufacture, inspection, and testing of bolted assemblies to ensure their reliability. It also specifies the

DIN 931 specifies the requirements for hexagonal head fasteners. These nuts are widely employed in numerous applications, from mechanical engineering tomanufacturing. The DIN 931 standard covers dimensions such as length and thread pitch. It also establishes standards for material grade and accuracy. Complying with DIN 931 ensures robust connecti