This European Standard specifies, together with EN 14399-1 and EN 14399-2, the requirements for assemblies of high-strength structural bolts and nuts of system HR suitable for preloaded joints with large widths across flats, thread sizes M12 to M36 and property classes 8.8/8 or 8.8/10 and 10.9/10. Bolting assemblies in accordance with this document have been designed to allow preloading of at least 0,7 fub × As 1) according to EN 1993-1-8 (Eurocode 3) and to obtain ductility predominantly by plastic elongation of the bolt. For this purpose the components have the following characteristics: - normal nut height (style 1), see EN ISO 4032; - thread length of the bolt according to ISO 888. Bolting assemblies in accordance with this document include washers according to EN 14399-6 or to EN 14399-5 (under the nut only). NOTE Attention is drawn to the importance of ensuring that bolting assemblies are correctly used if satisfactory results are to be obtained. For recommendations concerning proper application, reference to EN 1090-2 is made. General requirements and requirements for suitability for preloading are specified in EN 14399-2. Clamp lengths and grip lengths for the bolting assemblies are specified in the normative Annex A.
EN 14399-3:2015 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 14399-2:2015 High-strength structural bolting assemblies for preloading - Part 2: Suitability for preloading
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 1993-1-8:2005 Eurocode 3: Design of steel structures - Part 1-8: Design of joints
EN 26157-1:1991 Fasteners - Surface Discontinuities - Part 1: Bolts, Screws and Studs for General Requirements
EN ISO 10684:2004 Fasteners - Hot dip galvanized coatings (ISO 10684:2004)
EN ISO 3269:2000 Fasteners - Acceptance Inspection ISO 3269:2000
EN ISO 4032:2012 Hexagon regular nuts (style 1) - Product grades A and B (ISO 4032:2012)*， 2024-04-20 Update
EN ISO 4759-1:2000 Tolerances for Fasteners - Part 1: Bolts, Screws, Studs and Nuts - Product Grades A, B and C ISO 4759-1:2000*， 2024-04-20 Update
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 261:1998 ISO general purpose metric screw threads - General plan
ISO 272:1982 Fasteners; Hexagon products; Widths across flats
ISO 3508:1976 Thread run-outs for fasteners with thread in accordance with ISO 261 and ISO 262
ISO 888:2012 Fasteners - Bolts, screws and studs - Nominal lengths and thread lengths
ISO 965-2:1998 ISO general purpose metric screw threads - Tolerances - Part 2: Limits of sizes for general purpose external and internal screw threads - Medium quality
ISO 965-5:1998 ISO general purpose metric screw threads - Tolerances - Part 5: Limits of sizes for internal screw threads to mate with hot-dip galvanized external screw threads with maximum size of tolerance position h before galvanizing
EN 14399-3:2015 history
2015EN 14399-3:2015 High-strength structural bolting assemblies for preloading - Part 3: System HR - Hexagon bolt and nut assemblies
2005EN 14399-3:2005 High-strength structural bolting assemblies for preloading - Part 3: System HR - Hexagon bolt and nut assemblies