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

DIN 931 outlines the specifications for hexagonal head bolts. These nuts are frequently utilized in various industries, from mechanical engineering tomanufacturing. The DIN 931 standard covers parameters such as head size and thread pitch. It also sets criteria for material grade and precision. Following DIN 931 ensures robust connections and boo