This document, EN 14399:2005, defines the specifications for high-strength structural bolted assemblies. It addresses a wide range of bolted assemblies used in engineering applications. The standard establishes methods for the design, manufacture, inspection, and testing of bolted assemblies to ensure their performance. It also specifies the materi

DIN 931 defines the specifications for hexagonal head fasteners. These nuts are frequently utilized in various industries, from automotive engineering tomanufacturing. The DIN 931 standard covers sizes such as length and thread form. It also defines standards for material quality and precision. Complying with DIN 931 ensures reliable connections