DS EN 14399-4:2005
DS EN 14399-4:2005 High-Strength Structural Bolting Assemblies For Preloading - Part 4: System Hv - Hexagon Bolt And Nut Assemblies Defines the requirements for assemblies of high-strength structural bolts and nuts of system HV suitable for preloaded joints with large widths across flats, thread sizes M12 to M36 and property class