This document, EN 14399:2005, defines the requirements for high-strength structural bolted assemblies. It deals with a wide range of bolted assemblies used in civil applications. The standard outlines guidelines for the design, production, inspection, and testing of bolted assemblies to ensure their performance. It also specifies the elements that

DIN 931 specifies the standards for hexagonal head fasteners. These bolts are frequently utilized in numerous fields, from automotive engineering toassembly. The DIN 931 standard covers parameters such as length and thread pitch. It also sets criteria for material composition and tolerances. Complying with DIN 931 ensures durable connections and