This document, EN 14399:2005, defines the criteria for high-strength structural bolted assemblies. It covers a broad range of bolted joints used in civil applications. The standard outlines guidelines for the design, manufacture, inspection, and testing of bolted assemblies to ensure their performance. It also specifies the elements that can be use

DIN 931 defines the requirements for hexagonal head fasteners. These bolts are commonly used in diverse industries, from mechanical engineering tomanufacturing. The DIN 931 standard covers sizes such as length and thread form. It also establishes criteria for material composition and precision. Adhering to DIN 931 ensures robust connections and b