BS EN 14399-10. High-strength structural bolting assemblies for preloading. Part 10. System HRC. Bolt & nut assemblies with calibrated preload Fasteners, Structures, Bolting, Bolts, Steels, High-tensile steels, Threaded fasteners, Strength of materials, Mechanical properties of materials, Conformity, Type testing, Quality control, Approval testing, Acceptance (approval), Marking