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

DIN 931 outlines the specifications for six-sided head fasteners. These nuts are commonly used in numerous fields, from automotive engineering tomanufacturing. The DIN 931 standard covers dimensions such as length and thread form. It also sets standards for material grade and precision. Complying with DIN 931 ensures robust connections and boosts