This specification, EN 14399:2005, defines the specifications for high-strength structural bolted assemblies. It deals with a broad range of bolted connections used in civil applications. The standard establishes methods for the design, fabrication, inspection, and testing of bolted assemblies to ensure their reliability. It also specifies the mate

DIN 931 outlines the standards for hex head bolts. These bolts are commonly used in various fields, from mechanical engineering toassembly. The DIN 931 standard covers dimensions such as head size and thread form. It also sets criteria for material grade and precision. Complying with DIN 931 ensures durable connections and enhances the integrity