EN 14399-1:2005

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hochfeste planmäßig vorspannbare Schraubenverbindungen für den Metallbau - Teil 1: Allgemeine AnforderungenBoulonnerie de construction métallique a haute résistance apte a la précontrainte - Partie 1: Exigences généralesHigh-strength structural bolting assemblies for preloading - Part 1: General requirements21.060.01Vezni elementi na splošnoFasteners in generalICS:Ta slovenski standard je istoveten z:EN 14399-1:2005SIST EN 14399-1:2005en01-maj-2005SIST EN 14399-1:2005SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14399-1March 2005ICS 21.060.01English versionHigh-strength structural bolting assemblies for preloading - Part1: General requirementsBoulonnerie de construction métallique à haute résistanceapte à la précontrainte - Partie 1: Exigences généralesGarnituren für hochfeste planmäßig vorspannbareSchraubenverbindungen für den Metallbau - Teil 1:Allgemeine AnforderungenThis European Standard was approved by CEN on 3 February 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14399-1:2005: ESIST EN 14399-1:2005

Clauses of this European Standard addressing the provisions of EU Construction Products Directive (89/106/EEC).17 Bibliography.22
Bolt/nut/washer assembly System HR Bolt/nut/washer assembly System HV General require-ments EN 14399-1 Bolt/nut assembly EN 14399-3 EN 14399-4 Marking HR HV Property classes 8.8/8 10.9/10 10.9/10 Washer(s) EN 14399-5 or EN 14399-6 EN 14399-5 or
EN 14399-6 Marking H H Suitability test for preloading EN 14399-2 EN 14399-2
Preloaded bolted assemblies are very sensitive to differences in manufacture and lubrication. Therefore it is important that the assembly is supplied by one manufacturer who is always responsible for the function of the assembly. For the same reason it is important that coating of the assembly is under the control of one manufacturer. Beside the mechanical properties of the components the functionality of the assembly requires that the specified preload can be achieved if the assembly is tightened with a suitable procedure. For this purpose a test method for the suitability of the components for preloading was created which will demonstrate whether the function of the
assembly is fulfilled. For the time being, the product standards EN 14399-3 to EN 14399-6 are the only European Standards which have regard to the general requirements of EN 14399-1. However, further product standards on  fit bolts,  countersunk head bolts, and  load indicating washers for the use in high strength structural bolting for preloading are under preparation. SIST EN 14399-1:2005

EN ISO 9001, Quality management systems — Requirements (ISO 9001:2000). 3 Terms and definitions For the purposes of this document, the terms and definitions given in Guide to the Implementation of Directives Based on the New Approach and Global Approach and ENV 1090-1:1996 and the following apply. 3.1 assembly comprises matching bolt, nut and necessary washer(s) SIST EN 14399-1:2005

1) Size of a bolt means thread diameter and length. SIST EN 14399-1:2005

EN ISO 898-1 Minimum tensile strength
EN ISO 898-1 Stress at 0,2 % non-proportional elongation
EN ISO 898-1 Stress under proof load
EN ISO 898-1 Strength under wedge loading
EN ISO 898-1 Hardness
EN ISO 898-1 Impact strength
EN 14399-3 and
EN 14399-4
Table 3 — Nuts Mechanical characteristic Standard Stress under proof load EN 14399-3 for system HR and
EN 20898-2 for system HV Hardness EN 14399-3 for system HR and EN 20898-2 for system HV
Table 4 — Washers Mechanical characteristic Standard Hardness EN 14399-5 and EN 14399-6
4.4.4 Functional characteristics of the assembly The functional characteristics of the assemblies shall comply with the relevant requirements in accordance with EN 14399-3 (system HR) and EN 14399-4 (system HV), see Table 5. Table 5 — Assemblies Functional characteristics Standard Suitability for preloading (Fbi maxa, ∆Θ2b, k-class)
EN 14399-3 or EN 14399-4 a Maximum individual value of the bolt force during tightening test in accordance with
EN 14399-2. b Angle by which the nut (or bolt) has to be turned starting from a preload of 0,7 fub × As s
until the individual value of the bolt force has dropped again to 0,7 fub × As.
Assemblies according to k-class K2 shall be supplied only according alternative a) of 4.3. Table 6 — k-classes k-class Information to be supplied K0 No requirements for k-factor K1 Range of individual test value ki K2 Mean test value km Coefficient of variation of k-factor Vk
4.4.5 Marking All components used in assemblies for high strength structural bolting, which are suitable for preloading, shall be marked with the identification mark of the manufacturer of the assemblies and with the letter H. Additional letters defining the system (e.g. R for HR or V for HV) shall be added to H for bolts and nuts. All components of an assembly shall be marked with the same identification mark. 4.5 Durability Finish and coating of assemblies shall be in accordance with 4.2.4. A surface coating shall be used to enhance the inherent durability of assemblies against corrosion, if required. This durability shall be achieved either by applying a specified coating, or as part of the durability of the structure in which the assemblies are used. NOTE 1 For durability of structures against corrosion, protective coatings and method application, ENV 1090-1:1996, Clause 10, refers to
the relevant part of EN ISO 12944. The mechanical durability of assemblies is assured for a reasonable economic working life if the assembly com-plies with the requirements of this document and is used in accordance with the manufacturer's specification for tightening. NOTE 2 Tightening methods are given in ENV 1090-1. 5 Testing for conformity evaluation 5.1 Testing for dangerous substances Release of dangerous substances may be assessed indirectly by controlling the content of the substances in the materials used. 5.2 Testing of dimensional requirements of the components The tolerances of critical dimensions of the components shall be checked by standard gauges or measuring equipment of the required accuracy as given in the Tables 7 to 9. SIST EN 14399-1:2005

≤ 0,05
Measurement Width across corners (e)
≤ 0,05
Measurement Head height (k)
≤ 0,05
Measurement Shank diameter (ds)
≤ 0,05
Measurement Nominal length (l)
≤ 0,1
Measurement Shank length (ls)
≤ 0,1
Measurement Grip length (lg)
≤ 0,1
Measurement Thread dimensions —
Gauge Underhead radius (r) —
Gauge Head angle (of countersunk bolts) (α)
≤ 0,5°
Measurement a Symbols and descriptions of dimensions as defined in EN 20225.
Table 8 — Nuts Critical dimensiona Accuracy (mm) Method Width across flats (s)
≤ 0,05
Measurement Width across corners (e)
≤ 0,05
Measurement Nut height (m)
≤ 0,05
Measurement Thread dimensions —
Gauge a Symbols and descriptions of dimensions as defined in EN 20225.
Table 9 — Washers Critical dimensiona Accuracy (mm) Method Hole diameter (d1)
≤ 0,1/–
Measurement/Gauge Outer diameter (d2)
≤ 0,1
Measurement Thickness (h)
≤ 0,05
Measurement a Symbols and descriptions of dimensions as defined in EN 14399-5 and EN 14399-6.
5.3 Testing of mechanical characteristics of components The mechanical characteristics of bolts, nuts and washers shall be tested in accordance with Tables 10 to 12. Table 10 — Bolts Mechanical characteristic Test Reference standard for the test procedure Percent elongation after fracture Tensile test
EN ISO 898-1 Minimum tensile strength Tensile test
EN ISO 898-1 Stress at 0,2 % non-proportional elongation Tensile test
EN ISO 898-1 Stress under proof load Proof load test
EN ISO 898-1 Strength under wedge loading Wedge loading test
EN ISO 898-1 Hardness Hardness test
EN ISO 898-1 Impact strength Impact test
EN 10045-1 SIST EN 14399-1:2005

Table 12 — Washers Mechanical characteristic Test Reference standard for the test procedure Hardness Hardness test EN ISO 6507-1
5.4 Testing of functional characteristics of assembly The test of functional characteristics shall be in accordance with Table 13. Table 13 — Testing of assembly Functional characteristic Test Standard Suitability for preloading (Fbi maxa, ∆Θ2a, k-class) Suitability test for preloading EN 14399-2 a See Table 5
5.5 Acceptance criteria All fasteners tested for conformity evaluation shall pass the tests to be in conformance with this document. 6 Evaluation of conformity 6.1 General The conformity of the components and assemblies to the requirements of this document and with the stated values shall be demonstrated by:  initial type testing;  factory production control by the manufacturer, including product assessment. For th
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