SIST EN 14399-4:2015

High-strength structural bolting assemblies for preloading - Part 4: System HV - Hexagon bolt and nut assemblies

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 HV suitable for preloaded joints with large widths across flats, thread sizes M12 to M36 and property classes 10.9/10.
Bolting assemblies in accordance with 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 deformation of the engaged threads. For this purpose the components have the following characteristics:
-   nut height approximately 0,8 d;
-   bolt with short thread length.
Bolting assemblies in accordance with this document include washers according to EN 14399 6.
NOTE   Attention is drawn to the importance of ensuring that the 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.

Hochfeste vorspannbare Garnituren für Schraubverbindungen im Metallbau - Teil 4: System HV - Garnituren aus Sechskantschrauben und muttern

Diese Europäische Norm legt, zusammen mit EN 14399-1 und EN 14399-2, die Anforderungen fest für hochfeste Garnituren mit Sechs¬kantschrauben und -muttern im Metallbau des Systems HV mit großer Schlüsselweite in den Abmessungen M12 bis M36 und den Festigkeitsklassen 10.9/10, die für vorspannbare Schraubverbindungen geeignet sind.
Die Garnituren für Schraubverbindungen im Metallbau die diesem Dokument entsprechen, wurden so gestaltet, dass sie ein Vorspannen auf mindestens 0,7 fub  As ) in Übereinstimmung mit EN 1993 1 8 (Eurocode 3) erlauben, und dass sie ihr Verformungsvermögen vorwiegend durch plastische Verformung der gepaarten Gewinde erreichen. Zu diesem Zweck weisen die Komponenten folgende Merkmale auf:
-   Mutterhöhe etwa 0,8 d,
-   Schraube mit kurzem Gewinde.
Garnituren für Schraubverbindungen im Metallbau nach diesem Dokument entsprechen, beinhalten Scheiben nach EN 14399-6.
ANMERKUNG   Es wird darauf hingewiesen, dass zufrieden stellende Ergebnisse nur dann erzielt werden, wenn sicher¬gestellt ist, dass die Garnituren für Schraubverbindungen im Metallbau sachgerecht eingesetzt werden. Für Empfehlungen zur richtigen Anwendung wird auf EN 1090-2 verwiesen.
Die allgemeinen Anforderungen und die Anforderungen für die Eignung für das Vorspannen sind in EN 14399 2 festgelegt.
Klemmlängen und Paketdicken für  Garnituren für Schraubverbindungen im Metallbau sind im normativen Anhang A festgelegt.
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1) fub ist die Nenn-Zugfestigkeit (Rm) und As der Nenn-Spannungsquerschnitt der Schraube.

Ensembles de boulonnerie de construction métallique à haute résistance apte à la précontrainte - Partie 4: Système HV - Boulons à tête hexagonale (vis + écrou)

La présente Norme européenne, avec l’EN 14399-1 et l’EN 14399-2, spécifie les exigences applicables aux boulons de construction métallique à haute résistance du système HV (vis + écrou), à surplat de série large, de diamètre de filetage de M12 à M36 et de classes de qualité 10.9/10, destinés à être utilisés dans les assemblages précontraints.
Les boulons conformes au présent document ont été conçus de manière à permettre une précontrainte d’au moins 0,7 fub As ) conformément à l’EN 1993-1-8 (Eurocode 3) et à obtenir la ductilité principalement par déformation plastique du filetage en prise. Pour ce faire, les composants doivent avoir les caractéristiques suivantes :
-   hauteur d’écrou d’environ 0,8 d ;
-   vis de longueur filetée réduite.
Les boulons conformes au présent document comportent des rondelles conformes à l’EN 14399-6.
NOTE   Il est important de s’assurer que les boulons sont utilisés de façon correcte afin d’obtenir un résultat satisfaisant. Pour les recommandations relatives à la bonne utilisation, se référer à l’EN 1090-2.
Les exigences générales et les exigences relatives à l'aptitude à l'emploi pour la mise en précontrainte sont spécifiées dans l’EN 14399-2.
Les longueurs de serrage des boulons (vis + écrou + rondelles(s)) et les épaisseurs serrées sont données dans l’Annexe A normative.
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1) fub est la résistance nominale à la traction (Rm) et As la section résistante nominale de la vis.

Visokotrdnostne strukturne vijačne zveze za prednapetje - 4. del: Sistem HV - Zveze vijakov s šestrobo glavo in šestrobo matico

Ta dokument skupaj s standardom EN 14399-1 določa zahteve za zveze visokotrdnostnih strukturnih vijakov in matic sistema HR, ki so primerne za prednapetja z velikimi širinami na ravninah, velikostmi navojev od M12 do M36 ter razredi trdnosti 8,8/8 in 10,9/10.
Zveze vijakov in matic v skladu s tem dokumentom so bile zasnovane za prednapetje vsaj 0,7 fub x As 1) v skladu s standardom EN 1993-1-1 (Evrokod 3) in ohranjanje razteznosti predvsem s plastično deformacijo navojev. Za ta namen imajo sestavni deli naslednje značilnosti:
– višino matice približno 0,8 d;
– vijak s kratko dolžino navoja.
Zveze vijakov in matic v skladu s tem dokumentom vključujejo podložke po standardu EN 14399-6.
OPOMBA: Opozoriti je treba na pomembnost zagotavljanja pravilne uporabe vijakov za dosego zadovoljivih rezultatov. Za priporočila glede pravilne uporabe je naveden standard EN 1090-2.
Zahteve za primernost za prednapetje so opredeljene v standardu EN 14399-2.
Dolžine objemk in dolžine oprijema za zveze vijakov/matic/podložk so podane v normativnem dodatku A.

General Information

• Status: Published
• Public Enquiry End Date: 29-Sep-2014
• Publication Date: 23-Mar-2015
• ICS: 21.060.10 - Bolts, screws, studs
• ICS: 21.060.20 - Nuts
• Technical Committee: ISEL - Mechanical elements
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 17-Mar-2015
• Due Date: 22-May-2015
• Completion Date: 24-Mar-2015
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Directive: 97/23/EC - Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment
• Ref Project: EN 14399-4:2015 - High-strength structural bolting assemblies for preloading - Part 4: System HV - Hexagon bolt and nut assemblies

Relations

• Replaces: SIST EN 14399-4:2005 - High-strength structural bolting assemblies for preloading - Part 4: System HV - Hexagon bolt and nut assemblies
• Effective Date: 01-May-2015

Overview - EN 14399-4:2015 (System HV)

EN 14399-4:2015 is the CEN European Standard for high-strength structural bolting assemblies for preloading - Part 4: System HV (hexagon bolt and nut assemblies). It defines requirements for bolt/nut/washers assemblies with thread sizes M12 to M36 and property class 10.9/10, designed to achieve preloads required by Eurocode 3 (EN 1993-1-8). System HV assemblies are engineered to obtain ductility mainly by plastic deformation of engaged threads and to allow preloading of at least 0.7 · fub · As.

Key topics and technical requirements

• Scope & purpose: Assemblies suitable for preloaded joints with large widths across flats; intended for structural steel connections.
• Components: Hexagon bolts, short-thread bolts, nuts with nut height ≈ 0.8 · d, and plain chamfered washers per EN 14399-6.
• Sizes & classes: Thread sizes M12–M36, property class 10.9/10.
• Preload target: Designed to achieve the preloads required by EN 1993-1-8 (Eurocode 3) - minimum 0.7 fub × As.
• Manufacturing & marking: Materials, tolerances and marking follow EN 14399 series and related ISO standards (e.g., EN ISO 898-1/2, ISO 965). Bolts and nuts are supplied and controlled by a single manufacturer for consistent functionality.
• Functional testing: Suitability for preloading and fitness-for-purpose tests (including k-factor measurements and limits on variability Vk) are required as set out in EN 14399-2.
• Fit and dimensions: Bolt thread length, grip/clamp lengths and detailed dimensions are normative (Annex A specifies clamp and grip lengths).
• Surface/coating: Options include uncoated or hot-dip galvanized finishes in accordance with EN ISO 10684; tolerances and thread allowances for coatings are addressed.

Practical applications and users

Who uses EN 14399-4:2015:

• Structural engineers and connection designers specifying preloaded bolted joints in buildings, bridges and heavy steel structures.
• Fabricators and erectors who install preloaded hexagon bolt assemblies.
• Fastener manufacturers, test laboratories and quality inspectors ensuring conformity and functional performance.
• Procurement/specification writers and compliance officers referencing Eurocode-compatible bolting assemblies.

Use cases:

• Preloaded connections where controlled clamp force and ductility are critical (e.g., moment connections, splice joints).
• Situations requiring robust corrosion protection (hot-dip galvanizing) and standardized preload procedures.

Related standards

• EN 14399-1 (General requirements), EN 14399-2 (Suitability for preloading), EN 14399-3, EN 14399-5/6 (washers), EN 1993-1-8 (Eurocode 3), EN ISO 898-1/2, EN ISO 10684, EN 1090-2 (application guidance).

For safe, compliant use, avoid mixing System HR and HV components and consult EN 1090-2 and EN 14399-2 for application and testing procedures.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hochfeste vorspannbare Garnituren für Schraubverbindungen im Metallbau - Teil 4: System HV - Garnituren aus Sechskantschrauben und
mutternEnsembles de boulonnerie de construction métallique à haute résistance apte à la précontrainte - Partie 4: Système HV - Boulons à tête hexagonale (vis + écrou)High-strength structural bolting assemblies for preloading - Part 4: System HV - Hexagon bolt and nut assemblies21.060.20MaticeNuts21.060.10Sorniki, vijaki, stebelni vijakiBolts, screws, studsICS:Ta slovenski standard je istoveten z:EN 14399-4:2015SIST EN 14399-4:2015en,fr,de01-maj-2015SIST EN 14399-4:2015SLOVENSKI
STANDARDSIST EN 14399-4:20051DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14399-4
February 2015 ICS 21.060.01 Supersedes EN 14399-4:2005English Version
High-strength structural bolting assemblies for preloading - Part 4: System HV - Hexagon bolt and nut assemblies
Boulonnerie de construction métallique à haute résistance apte à la précontrainte - Partie 4: Système HV - Boulons à tête hexagonale (vis + écrou)
Hochfeste vorspannbare Garnituren für Schraubverbindungen im Metallbau - Teil 4: System HV - Garnituren aus Sechskantschrauben und -muttern This European Standard was approved by CEN on 18 October 2014.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14399-4:2015 ESIST EN 14399-4:2015

Clamp lengths and Grip lengths . 17 Bibliography . 20
1) fub is the nominal tensile strength (Rm) and As the nominal stress area of the bolt. SIST EN 14399-4:2015

Key a incomplete thread u ≤ 2P b 15° to 30° Figure 1 — Dimensions of bolts The difference between lg and ls should not be less than 1,5 P. For coated bolts, the dimensions apply prior to coating. SIST EN 14399-4:2015

1,75 2 2,5 2,5 3 3 3,5 4 b (ref).
23 28 33 34 39 41 44 52 c min. 0,4 0,4 0,4 0,4 0,4 0,4 0,4 0,4 max. 0,6 0,6 0,8 0,8 0,8 0,8 0,8 0,8 da max. 15,2 19,2 24,0 26,0 28,0 32,0 35,0 41,0 ds nom. 12 16 20 22 24 27 30 36 min. 11,30 15,30 19,16 21,16 23,16 26,16 29,16 35,00 max. 12,70 16,70 20,84 22,84 24,84 27,84 30,84 37,00 dw min. 20,1 24,9 29,5 33,3 38,0 42,8 46,6 55,9 max. b b b b b b b b e min. 23,91 29,56 35,03 39,55 45,20 50,85 55,37 66,44 k nom. 8 10 13 14 15 17 19 23 min. 7,55 9,25 12,10 13,10 14,10 16,10 17,95 21,95 max. 8,45 10,75 13,90 14,90 15,90 17,90 20,05 24,05 kw min. 5,28 6,47 8,47 9,17 9,87 11,27 1
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