DS EN 14399-10:2009
DS EN 14399-10:2009 High-Strength Structural Bolting Assemblies For Preloading - Part 10: System Hrc - Bolt And Nut Assemblies With Calibrated Preload Defines the requirements for assemblies of high-strength structural bolts and nuts of system HRC suitable for preloaded joints, with hexagon head (large widths across flats) or cup head, thread sizes