EN 14399-9:2009
(Main)High-strength structural bolting assemblies for preloading - Part 9: System HR or HV - Direct tension indicators for bolt and nut assemblies
General Information
- Abstract
This document specifies, together with EN 14399-1, the requirements for assemblies of high-strength structural bolts and nuts, with large width across flats, of system HR or HV, including the requirements for the general dimensions, tolerances, materials and performance for two grades, H8 and H10, of compressible washer-type direct tension indicators, nut face washers and bolt face washers suitable for preloaded joints. The assemblies include the nominal thread sizes M12 up to and including M36 and property classes 8.8/8, 8.8/10 and 10.9/10.
Bolt and nut assemblies to this document have been designed to allow preloading of at least 0,7 fub × As according to EN 1993-1-8 (Eurocode 3) and to obtain ductility predominantly by plastic elongation of the bolt for system HR according to EN 14399-3 or by plastic deformation of the engaged threads for system HV according to EN 14399-4; also countersunk and fit bolts according to EN 14399-7 and -8 respectively.
Bolt and nut assemblies conforming to this document may include washer(s) according to EN 14399-6 or to EN 14399-5 (under the nut only).
The purpose of the direct tension indicators is to show that a defined preload is achieved in the bolt. The direct tension indicator can be used alone or with bolt face washers or nut face washers conforming to this standard. In either case the direct tension indicators shall be used as part of an assembly in accordance with EN 14399-1.
To comply with EN 14399-1, the assemblies shall be supplied by one manufacturer include bolts, nuts, washers and direct tension indicators.
NOTE 1 Attention is drawn to the importance of ensuring that the assemblies are correctly used if satisfactory results are to be obtained.
The test method for suitability for preloading is specified in EN 14399-2 and supplemented by Clause 5.
Guidance on the use of compressible washer-type direct tension indicators is given in EN 1090-2.
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- Status
- Withdrawn
- Publication Date
- 17-Mar-2009
- Withdrawal Date
- 22-Sep-2026
- Technical Committee
- CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
- Drafting Committee
- CEN/TC 185/WG 6 - Structural bolting
- Current Stage
- 9960 - Withdrawal effective - Withdrawal
- Start Date
- 03-May-2018
- Completion Date
- 23-Sep-2026
Relations
- Effective Date
- 09-May-2018
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Refers
EN 14399-5:2015 - High-strength structural bolting assemblies for preloading - Part 5: Plain washers - Effective Date
- 28-Jan-2026
Frequently Asked Questions
EN 14399-9:2009 is a standard published by the European Committee for Standardization (CEN). Its full title is "High-strength structural bolting assemblies for preloading - Part 9: System HR or HV - Direct tension indicators for bolt and nut assemblies". This standard covers: This document specifies, together with EN 14399-1, the requirements for assemblies of high-strength structural bolts and nuts, with large width across flats, of system HR or HV, including the requirements for the general dimensions, tolerances, materials and performance for two grades, H8 and H10, of compressible washer-type direct tension indicators, nut face washers and bolt face washers suitable for preloaded joints. The assemblies include the nominal thread sizes M12 up to and including M36 and property classes 8.8/8, 8.8/10 and 10.9/10. Bolt and nut assemblies to this document have been designed to allow preloading of at least 0,7 fub × As according to EN 1993-1-8 (Eurocode 3) and to obtain ductility predominantly by plastic elongation of the bolt for system HR according to EN 14399-3 or by plastic deformation of the engaged threads for system HV according to EN 14399-4; also countersunk and fit bolts according to EN 14399-7 and -8 respectively. Bolt and nut assemblies conforming to this document may include washer(s) according to EN 14399-6 or to EN 14399-5 (under the nut only). The purpose of the direct tension indicators is to show that a defined preload is achieved in the bolt. The direct tension indicator can be used alone or with bolt face washers or nut face washers conforming to this standard. In either case the direct tension indicators shall be used as part of an assembly in accordance with EN 14399-1. To comply with EN 14399-1, the assemblies shall be supplied by one manufacturer include bolts, nuts, washers and direct tension indicators. NOTE 1 Attention is drawn to the importance of ensuring that the assemblies are correctly used if satisfactory results are to be obtained. The test method for suitability for preloading is specified in EN 14399-2 and supplemented by Clause 5. Guidance on the use of compressible washer-type direct tension indicators is given in EN 1090-2. (...)
This document specifies, together with EN 14399-1, the requirements for assemblies of high-strength structural bolts and nuts, with large width across flats, of system HR or HV, including the requirements for the general dimensions, tolerances, materials and performance for two grades, H8 and H10, of compressible washer-type direct tension indicators, nut face washers and bolt face washers suitable for preloaded joints. The assemblies include the nominal thread sizes M12 up to and including M36 and property classes 8.8/8, 8.8/10 and 10.9/10. Bolt and nut assemblies to this document have been designed to allow preloading of at least 0,7 fub × As according to EN 1993-1-8 (Eurocode 3) and to obtain ductility predominantly by plastic elongation of the bolt for system HR according to EN 14399-3 or by plastic deformation of the engaged threads for system HV according to EN 14399-4; also countersunk and fit bolts according to EN 14399-7 and -8 respectively. Bolt and nut assemblies conforming to this document may include washer(s) according to EN 14399-6 or to EN 14399-5 (under the nut only). The purpose of the direct tension indicators is to show that a defined preload is achieved in the bolt. The direct tension indicator can be used alone or with bolt face washers or nut face washers conforming to this standard. In either case the direct tension indicators shall be used as part of an assembly in accordance with EN 14399-1. To comply with EN 14399-1, the assemblies shall be supplied by one manufacturer include bolts, nuts, washers and direct tension indicators. NOTE 1 Attention is drawn to the importance of ensuring that the assemblies are correctly used if satisfactory results are to be obtained. The test method for suitability for preloading is specified in EN 14399-2 and supplemented by Clause 5. Guidance on the use of compressible washer-type direct tension indicators is given in EN 1090-2. (...)
EN 14399-9:2009 is classified under the following ICS (International Classification for Standards) categories: 21.060.01 - Fasteners in general. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 14399-9:2009 has the following relationships with other standards: It is inter standard links to EN 14399-9:2018, EN 14399-7:2018, EN ISO 3269:2000, EN 14399-6:2015, EN ISO 6508-1:2023, EN ISO 17668:2016, EN 14399-4:2015, EN ISO 4759-3:2016, EN 14399-8:2018, EN ISO 7500-1:2018, EN 14399-2:2005, EN 14399-1:2005, EN ISO 6507-1:2023, EN 14399-3:2015, EN 14399-5:2015. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 14399-9:2009 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hochfeste planmäßig vorspannbare Schraubenverbindungen für den Metallbau - Teil 9: System HR oder HV - Direkte Kraftanzeiger für Garnituren aus Schrauben und MutternBoulonnerie de construction métallique à haute résistance apte à la précontrainte - Partie 9 : Système HR ou HV - Rondelles indicatrices de précontrainte pour les boulonsHigh-strength structural bolting assemblies for preloading - Part 9: System HR or HV - Direct tension indicators for bolt and nut assemblies21.060.20MaticeNuts21.060.10Sorniki, vijaki, stebelni vijakiBolts, screws, studsICS:Ta slovenski standard je istoveten z:EN 14399-9:2009SIST EN 14399-9:2009en,fr,de01-junij-2009SIST EN 14399-9:2009SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14399-9March 2009ICS 21.060.01 English VersionHigh-strength structural bolting assemblies for preloading - Part9: System HR or HV - Direct tension indicators for bolt and nutassembliesBoulonnerie de construction métallique à haute résistanceapte à la précontrainte - Partie 9 : Système HR ou HV -Rondelles indicatrices de précontrainte pour les boulonsHochfeste planmäßig vorspannbareSchraubenverbindungen für den Metallbau - Teil 9: SystemHR oder HV - Direkte Kraftanzeiger für Garnituren ausSchrauben und MutternThis European Standard was approved by CEN on 24 January 2009.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 CEN Management Centre 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14399-9:2009: ESIST EN 14399-9:2009
Special testing conditions and procedures . 22Bibliography . 23 SIST EN 14399-9:2009
Bolt/nut/washer assembly System HR Bolt/nut/washer assembly System HV General requirements EN 14399-1 Bolt/nut assembly EN 14399-3 or EN 14399-7 EN 14399-4 or EN 14399-8 Marking HR HV Property classes 8.8/8 or 8.8/10 10.9/10 10.9/10 Washers EN 14399-5 or EN 14399-6 EN 14399-5 or EN 14399-6 Marking H H Direct tension indicator EN 14399-9 Marking H8 H10 H10 Bolt/nut face washer EN 14399-9 Marking HB/HN HB/HN 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 hot dip galvanizing or other surface coatings of the assembly are 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 when the average gap remaining after tightening (compressed protrusions) is less than the specified values in this standard, if the assembly is tightened with a suitable procedure. The test method given in this standard has been developed to demonstrate the suitability of the components for preloading. SIST EN 14399-9:2009
1) fub is the nominal tensile strength (Rm) and As is the tensile stress area of the bolt. SIST EN 14399-9:2009
Key d1 Internal diameter d2 External diameter d3 Protrusion tangential diameter d4 Protrusion internal diameter h1 Material thickness h2 Height over protrusions h3 Height of protrusions Figure 1 — Dimensions of compressible washer-type direct tension indicator (example with six protrusions) Table 2 — Dimensions of compressible washer-type direct tension indicator Dimensions in millimetresFor use with bolts of designation Internal diameter
d1 External diameter
d2 Material thickness h1 Height over protrusions h2 Height of protrusions h3 Protrusion tangential diameter d3 Protrusion internal diameter d4 min. max. min. max. min. max. min. max. min. M12 12,75 12,85 26,0 32,5 2,50 5,50 0,80 20 13,85 M16 16,75 16,85 35,0 36,8 3,00 6,00 0,80 25 17,85 M20 20,95 21,05 41,0 46,0 3,50 6,50 0,80 29 22,05 M22 23,05 23,15 46,5 50,6 4,00 7,00 0,80 33 24,15 M24 25,15 25,25 50,0 55,2 4,00 7,00 0,80 38 26,25 M27 28,30 28,40 54,0 62,1 4
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