1. EN 1090-2:2008+A1:2011, Execution of steel structures and aluminium structures ― Part 2: Technical requirements for steel structures
2. Optimization of the procedure for slip factor tests according to EN 1090-2;Stranghöner;Steel Construction,2017
3. EN 14399-4:2015, High-strength structural bolting assemblies for preloading - Part 4: System HV - Hexagon bolt and nut assemblies
4. EN 14399-3:2015, High-strength structural bolting assemblies for preloading - Part 3: System HR - Hexagon bolt and nut assemblies
5. EN ISO 4017:2014, Fasteners - Hexagon head screws ― Product grades A and B (ISO 4017 2014