This European Standard specifies the technical requirements for high-strength structural bolting assemblies in order to ensure the suitability for preloading of bolted connections in metallic structures. A suitability test is specified to check the behaviour of the structural bolting assemblies so as to ensure that the required preload can be reliably obtained by the tightening methods specified in EN 1090-2 with sufficient margins against overtightening and against failure.
EN 14399-2:2015 Referenced Document
EN 14399-10:2009 High-strength structural bolting assemblies for preloading - Part 10: System HRC - Bolt and nut assemblies with calibrated preload
EN 14399-1:2015 High-strength structural bolting assemblies for preloading - Part 1: General requirements
EN 14399-3:2015 High-strength structural bolting assemblies for preloading - Part 3: System HR - Hexagon bolt and nut assemblies
EN 14399-4:2015 High-strength structural bolting assemblies for preloading - Part 4: System HV - Hexagon bolt and nut assemblies
EN 14399-5:2015 High-strength structural bolting assemblies for preloading - Part 5: Plain washers
EN 14399-6:2015 High-strength structural bolting assemblies for preloading - Part 6: Plain chamfered washers
EN 14399-7:2007 High-strength structural bolting assemblies for preloading - Part 7: System HR - Countersunk head bolt and nut assemblies*， 2024-04-20 Update
EN 14399-8:2007 High-strength structural bolting assemblies for preloading - Part 8: System HV - Hexagon fit bolt and nut assemblies*， 2024-04-20 Update
EN 14399-9:2009 High-strength structural bolting assemblies for preloading - Part 9: System HR or HV - Direct tension indicators for bolt and nut assemblies
EN ISO 898-1:2013 Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1: Bolts, screws and studs with specified property classes - Coarse thread and fine pitch thread
EN ISO 898-2:2012 Mechanical properties of fasteners made of carbon steel and alloy steel - Part 2: Nuts with specified property classes - Coarse thread and fine pitch thread (ISO 898-2:2012)
ISO 272:1982 Fasteners; Hexagon products; Widths across flats
EN 14399-2:2015 history
2015EN 14399-2:2015 High-strength structural bolting assemblies for preloading - Part 2: Suitability for preloading
2005EN 14399-2:2005 High-strength structural bolting assemblies for preloading - Part 2: Suitability test for preloading