This document, EN 14399:2005, defines the criteria for high-strength structural bolted assemblies. It addresses a comprehensive range of bolted connections used in structural applications. The standard establishes procedures for the design, manufacture, inspection, and testing of bolted assemblies to ensure their performance. It also specifies the

DIN 931 specifies the standards for six-sided head screws. These bolts are widely employed in numerous industries, from mechanical engineering tomanufacturing. The DIN 931 standard covers parameters such as diameter and thread pitch. It also sets criteria for material grade and accuracy. Complying with DIN 931 ensures reliable connections and imp