NBN EN 14399-1:2015

This European Standard specifies the general requirements for bolt/nut/washer(s) assemblies for high-strength structural bolting, which are suitable for preloading.
The intended use of bolting assemblies in accordance with this European Standard is structural metallic works.
NOTE 1 High-strength structural bolting assemblies in accordance with EN 14399-2 to EN 14399-10 are designed to fulfil the requirements of this European Standard.
NOTE 2 High-strength structural bolting assemblies are suitable for preloading in accordance with EN 1090-2 in steel structures.
High-strength structural bolting assemblies smaller than M12 are not designed to be preloaded.
High-strength structural bolting assemblies are not designed to be welded.
Railway rail fasteners are not covered by this standard.
Directives : Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec