1. The European standard EN 14399 specifies the requirements for high-strength structural bolting assemblies for preloading.
2. EN 14399 covers the mechanical properties of bolts, nuts, and washers, as well as the dimensions and tolerances of these components.
3. This standard also provides guidelines for the assembly of these components, including the tightening procedures and torque values to ensure proper preloading.
4. Compliance with EN 14399 is essential for ensuring the structural integrity and safety of bolted connections in various applications, such as construction and engineering projects.