This specification, EN 14399:2005, defines the specifications for high-strength structural bolted assemblies. It addresses a wide range of bolted connections used in engineering applications. The standard provides guidelines for the design, fabrication, inspection, and testing of bolted assemblies to ensure their reliability. It also specifies the

DIN 931 specifies the specifications for hex head fasteners. These nuts are commonly used in numerous industries, from automotive engineering toassembly. The DIN 931 standard covers sizes such as head size and thread form. It also defines criteria for material grade and tolerances. Complying with DIN 931 ensures robust connections and improves th