This document, EN 14399:2005, defines the criteria for high-strength structural bolted assemblies. It deals with a broad range of bolted assemblies used in structural applications. The standard provides guidelines for the design, manufacture, inspection, and testing of bolted assemblies to ensure th

DIN 931 defines the specifications for hexagonal head fasteners. These bolts are commonly used in various fields, from automotive engineering toconstruction. The DIN 931 standard covers sizes such as diameter and thread form. It also sets requirements for material grade and accuracy. Complying wit