This part of this European Standard specifies, together with EN 14399-1, the requirements for assemblies of high-strength structural bolts and nuts of system HRC suitable for preloaded joints, with hexagon head (large widths across flats) or cup head, thread sizes M12 to M30 and property class 10.9/10.
Bolt and nut assemblies conforming to this part of this European Standard have been designed to allow
preloading of at least 0,7 f × As according to EN 1993-1-8:2005 (Eurocode 3) and to obtain ductility predominantly by plastic elongation of the bolt. For this purpose the components have the following characteristics:
-nut according to EN 14399-3, or
-nut with height m = 1 d,
-thread length of the bolt according to ISO 888.
Bolt and nut assemblies conforming to this part of this European Standard include washer(s) according to EN 14399-6 or to EN 14399-5 (under the nut only).
NOTE Attention is drawn to the importance of ensuring that the bolts are correctly used if a satisfactory result is to be obtained.
The test method for suitability for preloading is specified in EN 14399-2 and in Clause 8.
BS EN 14399-10:2009 Referenced Document
EN 10045-1 Metal Products, Mechanical Tests, Charpy Impact Tests, Test Specimens, Testing Conditions
EN 14399-1 High-strength structural bolting assemblies for preloading - Part 1: General requirements*， 2015-02-01 Update
EN 14399-2:2005 High-strength structural bolting assemblies for preloading - Part 2: Suitability test for preloading
EN 14399-3:2005 High-strength structural bolting assemblies for preloading - Part 3: System HR - Hexagon bolt and nut assemblies
EN 14399-5 High-strength structural bolting assemblies for preloading - Part 5: Plain washers*， 2015-02-01 Update
EN 14399-6 High-strength structural bolting assemblies for preloading - Part 6: Plain chamfered washers*， 2015-02-01 Update
EN 20898-2 Mechanical Properties of Fasteners - Part 2: Nuts with Specified Proof Load Values - Coarse Thread (ISO 898-2 : 1992)
EN 26157-1 Fasteners - Surface Discontinuities - Part 1: Bolts, Screws and Studs for General Requirements
EN ISO 10684 Fasteners - Hot dip galvanized coatings (ISO 10684:2004/Cor 1:2008)
EN ISO 3269 Fasteners - Acceptance inspection (ISO 3269:2019)*， 2019-09-18 Update
EN ISO 4759-1 Tolerances for Fasteners - Part 1: Bolts, Screws, Studs and Nuts - Product Grades A, B and C ISO 4759-1:2000*， 2024-04-19 Update
EN ISO 6157-2 Fasteners - Surface discontinuities - Part 2: Nuts
EN ISO 898-1 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 - Technical Corrigendum 1 (ISO 898-1:2013/Cor 1:2013)*， 2013-10-01 Update
ISO 148-1 Metallic materials - Charpy pendulum impact test - Part 1: Test method*， 2016-10-01 Update
ISO 261 ISO general purpose metric screw threads - General plan
ISO 965-2 ISO general purpose metric screw threads - Tolerances - Part 2: Limits of sizes for general purpose external and internal screw threads - Medium quality; Amendment 1*， 2021-06-30 Update
ISO 965-5 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 positio*， 2021-07-06 Update
BS EN 14399-10:2009 history
2018BS EN 14399-10:2018 High-strength structural bolting assemblies for preloading. System HRC. Bolt and nut assemblies with calibrated preload
2009BS EN 14399-10:2009 High-strength structural bolting assemblies for preloading - Part 10:System HRC - Bolt and nut assemblies with calibrated preload
1969BS 4395-2:1969 Specification for high strength friction grip bolts and associated nuts and washers for structural engineering. Higher grade bolts and nuts and general grade washers