EN 15048-1:2016
(Main)Non-preloaded structural bolting assemblies - Part 1: General requirements
General Information
- Abstract
This part of this European Standard specifies the general requirements for bolting assemblies for non-preloaded structural bolting. Bolting assemblies in accordance with this European Standard are designed to be used in structural bolting connections for shear and/or tensile loading.
The intended use of bolting assemblies in accordance with this European standard is structural metallic works.
It applies to bolts (the term used when bolts partially threaded, screws, studs and stud-bolts are considered all together) and nuts made of carbon steel, alloy steel, stainless steel or aluminium or aluminium alloy with the following property classes:
- bolts made of carbon steel and alloy steel: 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 10.9 (in accordance with EN ISO 898 1);
- nuts made of carbon steel and alloy steel: 5, 6, 8, 10, 12 (in accordance with EN ISO 898 2);
- bolts made of austenitic stainless steel: 50, 70, 80 (in accordance with EN ISO 3506 1);
- nuts made of austenitic stainless steel: 50, 70, 80 (in accordance with EN ISO 3506 2);
- bolts made of aluminium or aluminium alloy: AL1 to AL6 (in accordance with EN 28839);
- nuts made of aluminium or aluminium alloy: AL1 to AL6 (in accordance with EN 28839).
This European Standard applies to bolting assemblies with ISO metric coarse pitch thread from sizes M12 to M39 for use in steel structures according to EN 1090 2, and from M5 to M39 for use in aluminium or aluminium alloy structures according to EN 1090 3. The use of thread sizes larger than M39 is not precluded provided all applicable requirements of this standard are met.
WARNING — Only bolting assemblies are covered by this harmonized standard: separate bolts or nuts, not tested as part of an assembly lot of bolting assemblies in accordance with EN 15048 2, are not covered by this harmonized standard and cannot be CE marked.
NOTE 1 The property classes 4.8, 5.8 and 6.8 may be subjected to limitations of use.
NOTE 2 High-strength structural bolting assemblies for preloading which meet the requirements of EN 14399–1 are not within the scope of this European Standard but they are also suitable for use in non-preloaded structural bolting.
NOTE 3 Bolts and nuts made of aluminium or aluminium alloys are not designed to be used in steel structures, see EN 1090–2.
Bolting assemblies in accordance with this European Standard are not designed to be welded.
Railway rail fasteners are not covered by this European Standard.
- Status
- Published
- Publication Date
- 19-Jul-2016
- Withdrawal Date
- 29-Apr-2018
- Technical Committee
- CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
- Drafting Committee
- CEN/TC 185/WG 6 - Structural bolting
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 16-Apr-2023
- Completion Date
- 17-Sep-2026
- Directive
- Harmonized Standard305/2011 - 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
Not Harmonized89/106/EEC - Construction products
Overview
EN 15048-1:2016 - Non-preloaded structural bolting assemblies: Part 1, General requirements sets the European product requirements for matched bolting assemblies (bolt + nut) intended for non-preloaded structural bolting in metallic works. It covers assemblies designed for shear and/or tensile loading, made from carbon/alloy steel, austenitic stainless steel or aluminium/aluminium alloy, and using ISO metric coarse threads (nominal sizes M5–M39 depending on application). This harmonized standard supports CE marking of bolting assemblies under the EU Construction Products Regulation (CPR) but covers only assembled bolting sets-not individual untested bolts or nuts.
Key topics and technical requirements
- Scope of materials & property classes
- Carbon/alloy steel bolts: property classes 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 10.9 (EN ISO 898-1)
- Nuts (carbon/alloy): classes 5, 6, 8, 10, 12 (EN ISO 898-2)
- Austenitic stainless bolts/nuts: classes 50, 70, 80 (EN ISO 3506)
- Aluminium bolts/nuts: AL1–AL6 (EN 28839)
- Thread sizes and use
- For steel structures (EN 1090‑2): typically M12–M39
- For aluminium structures (EN 1090‑3): M5–M39
- Larger threads allowed if all requirements are met
- Performance requirements
- Assemblies must achieve defined minimum tensile resistance values (derived from relevant property-class tensile strengths). Tensile testing and verification procedures are specified in EN 15048‑2 (fitness for purpose).
- Conformity & factory controls
- Assessment and Verification of Constancy of Performance (AVCP) and Factory Production Control (FPC) requirements are included for CE marking of assemblies.
- Limitations & exclusions
- Washers are not considered part of the assembly (but may be used); assemblies are not intended to be welded; railway rail fasteners are excluded.
- Aluminium fasteners are not intended for use in steel structures.
- High‑strength preloaded assemblies (EN 14399) are outside scope, though they can be used in non‑preloaded connections.
Applications and users
- Practical applications: structural bolting in steel and aluminium buildings, bridges, frames and other metallic constructions where non‑preloaded connections are employed (shear joints, slip‑critical not required).
- Typical users: structural engineers, fabricators, fastener manufacturers, procurement specialists, construction compliance officers and testing laboratories responsible for CE marking and product certification.
Related standards
- EN 15048-2 (Fitness for purpose / testing)
- EN 1090-2 (steel execution) and EN 1090-3 (aluminium execution)
- EN ISO 898-1 / EN ISO 898-2 (mechanical properties of carbon/alloy steel fasteners)
- EN ISO 3506-1 / -2 (stainless steel fasteners)
- EN 28839 (aluminium fastener properties)
- EN 14399 (preloaded structural bolting assemblies)
- EN ISO 10684 (hot-dip galvanizing effects)
EN 15048-1 is essential when specifying non-preloaded bolting assemblies to ensure consistent mechanical performance, regulatory compliance (CE marking), and safe application in structural metallic works.
Relations
- Replaces
EN 15048-1:2007 - Non-preloaded structural bolting assemblies - Part 1: General requirements - Effective Date
- 19-Mar-2011
- Effective Date
- 25-Aug-2026
- Effective Date
- 25-Aug-2026
- Effective Date
- 25-Aug-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-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
Frequently Asked Questions
EN 15048-1:2016 is a standard published by the European Committee for Standardization (CEN). Its full title is "Non-preloaded structural bolting assemblies - Part 1: General requirements". This standard covers: This part of this European Standard specifies the general requirements for bolting assemblies for non-preloaded structural bolting. Bolting assemblies in accordance with this European Standard are designed to be used in structural bolting connections for shear and/or tensile loading. The intended use of bolting assemblies in accordance with this European standard is structural metallic works. It applies to bolts (the term used when bolts partially threaded, screws, studs and stud-bolts are considered all together) and nuts made of carbon steel, alloy steel, stainless steel or aluminium or aluminium alloy with the following property classes: - bolts made of carbon steel and alloy steel: 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 10.9 (in accordance with EN ISO 898 1); - nuts made of carbon steel and alloy steel: 5, 6, 8, 10, 12 (in accordance with EN ISO 898 2); - bolts made of austenitic stainless steel: 50, 70, 80 (in accordance with EN ISO 3506 1); - nuts made of austenitic stainless steel: 50, 70, 80 (in accordance with EN ISO 3506 2); - bolts made of aluminium or aluminium alloy: AL1 to AL6 (in accordance with EN 28839); - nuts made of aluminium or aluminium alloy: AL1 to AL6 (in accordance with EN 28839). This European Standard applies to bolting assemblies with ISO metric coarse pitch thread from sizes M12 to M39 for use in steel structures according to EN 1090 2, and from M5 to M39 for use in aluminium or aluminium alloy structures according to EN 1090 3. The use of thread sizes larger than M39 is not precluded provided all applicable requirements of this standard are met. WARNING — Only bolting assemblies are covered by this harmonized standard: separate bolts or nuts, not tested as part of an assembly lot of bolting assemblies in accordance with EN 15048 2, are not covered by this harmonized standard and cannot be CE marked. NOTE 1 The property classes 4.8, 5.8 and 6.8 may be subjected to limitations of use. NOTE 2 High-strength structural bolting assemblies for preloading which meet the requirements of EN 14399–1 are not within the scope of this European Standard but they are also suitable for use in non-preloaded structural bolting. NOTE 3 Bolts and nuts made of aluminium or aluminium alloys are not designed to be used in steel structures, see EN 1090–2. Bolting assemblies in accordance with this European Standard are not designed to be welded. Railway rail fasteners are not covered by this European Standard.
This part of this European Standard specifies the general requirements for bolting assemblies for non-preloaded structural bolting. Bolting assemblies in accordance with this European Standard are designed to be used in structural bolting connections for shear and/or tensile loading. The intended use of bolting assemblies in accordance with this European standard is structural metallic works. It applies to bolts (the term used when bolts partially threaded, screws, studs and stud-bolts are considered all together) and nuts made of carbon steel, alloy steel, stainless steel or aluminium or aluminium alloy with the following property classes: - bolts made of carbon steel and alloy steel: 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 10.9 (in accordance with EN ISO 898 1); - nuts made of carbon steel and alloy steel: 5, 6, 8, 10, 12 (in accordance with EN ISO 898 2); - bolts made of austenitic stainless steel: 50, 70, 80 (in accordance with EN ISO 3506 1); - nuts made of austenitic stainless steel: 50, 70, 80 (in accordance with EN ISO 3506 2); - bolts made of aluminium or aluminium alloy: AL1 to AL6 (in accordance with EN 28839); - nuts made of aluminium or aluminium alloy: AL1 to AL6 (in accordance with EN 28839). This European Standard applies to bolting assemblies with ISO metric coarse pitch thread from sizes M12 to M39 for use in steel structures according to EN 1090 2, and from M5 to M39 for use in aluminium or aluminium alloy structures according to EN 1090 3. The use of thread sizes larger than M39 is not precluded provided all applicable requirements of this standard are met. WARNING — Only bolting assemblies are covered by this harmonized standard: separate bolts or nuts, not tested as part of an assembly lot of bolting assemblies in accordance with EN 15048 2, are not covered by this harmonized standard and cannot be CE marked. NOTE 1 The property classes 4.8, 5.8 and 6.8 may be subjected to limitations of use. NOTE 2 High-strength structural bolting assemblies for preloading which meet the requirements of EN 14399–1 are not within the scope of this European Standard but they are also suitable for use in non-preloaded structural bolting. NOTE 3 Bolts and nuts made of aluminium or aluminium alloys are not designed to be used in steel structures, see EN 1090–2. Bolting assemblies in accordance with this European Standard are not designed to be welded. Railway rail fasteners are not covered by this European Standard.
EN 15048-1:2016 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 15048-1:2016 has the following relationships with other standards: It is inter standard links to EN 15048-1:2007, ISO 965-2:1998, ISO 965-3:1998, ISO 965-4:1998, ISO 965-5:1998, ISO 965-1:2013, EN ISO 898-2:2022, EN 1090-2:2018+A1:2024, EN ISO 10684:2004, EN ISO 898-1:2013, EN ISO 4759-1:2000, EN ISO 3506-2:2020, EN ISO 3506-1:2020, EN ISO 9013:2002/A1:2003, EN ISO 225:2010. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 15048-1:2016 is associated with the following European legislation: EU Directives/Regulations: 305/2011, 89/106/EEC; Standardization Mandates: M/120. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN 15048-1:2016 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.Garnituren für nicht vorgespannte Schraubverbindungen im Metallbau - Teil 1: Allgemeine AnforderungenBoulonnerie de construction métallique non précontrainte - Partie 1: Exigences généralesNon-preloaded structural bolting assemblies - Part 1: General requirements21.060.10Sorniki, vijaki, stebelni vijakiBolts, screws, studsICS:Ta slovenski standard je istoveten z:EN 15048-1:2016SIST EN 15048-1:2016en,fr,de01-oktober-2016SIST EN 15048-1:2016SLOVENSKI
STANDARDSIST EN 15048-1:20071DGRPHãþD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 15048-1
July
t r s x ICS
t sä r x rä r s Supersedes EN
s w r v zæ sã t r r yEnglish Version
Nonæpreloaded structural bolting assemblies æ Part
sã General requirements Boulonnerie de construction métallique non précontrainte æ Partie
sã Exigences générales
Garnituren für nicht vorgespannte Schraubverbindungen im Metallbau æ Teil
sã Allgemeine Anforderungen This European Standard was approved by CEN on
s { March
t r s wä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey andUnited Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s w r v zæ sã t r s x ESIST EN 15048-1:2016
Clauses of this European Standard addressing the provisions of the EU Construction Products Regulation . 24 ZA.1 Scope and relevant characteristics . 24 ZA.2 Procedure for Assessment and Verification of Constancy of Performance (AVCP) of Non-preloaded structural bolting assemblies . 24 ZA.3 CE marking and labelling . 28 Bibliography . 30
« t r °Ca 27 J – 27 J Impact strength KV,min at +20 °Ca – 27 J – a Impact strength may be tested at lower temperature, in this case the minimum impact strength value shall be KV = 27 J. 4.3.8 Hardness (bolts and nuts) Bolts and nuts shall be assessed in accordance with 5.3.8. The results for hardness shall meet the requirements specified in EN ISO 898-1 or EN ISO 898-2 for the relevant property class. NOTE There is no requirement for bolting assemblies manufactured from aluminium, aluminium alloy or stainless steel. 4.4 Product grade (bolts and nuts) 4.4.1 General Product grade covers tolerances on dimensions and shape for bolts and nuts. It is relevant for the ability of components to be matched together in order to provide the declared performances of the bolting assemblies. SIST EN 15048-1:2016
¶ 0,05 mm Measurement Width across corners (e)
¶ 0,05 mm Measurement Head height (k)
¶ 0,05 mm Measurement Shank diameter (ds)
¶ 0,05 mm Measurement Length (l)
¶ 0,1 mm Measurement Shank length (ls)
¶ 0,1 mm Measurement Grip length (lg)
¶ 0,1 mm Measurement Thread dimensions –b Gauge Head angle (of countersunk bolts) ()
¶ 0,5° Measurement a Symbols and descriptions of dimensions as defined in EN ISO 225. b The use of GO/NO-GO gauges does not permit the specification of a value of accuracy. Table 7 — 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 –b Gauge a Symbols and descriptions of dimensions as defined in EN ISO 225. b The use of GO/NO-GO gauges does not permit the specification of a value of accuracy. 6 Assessment and Verification of Constancy of Performance (AVCP) 6.1 General The compliance of structural bolting assemblies with the requirements of this standard and with the performances declared by the manufacturer in the Declaration of Performance (DoP) shall be demonstrated by: — determination of the product-type (type-testing); — factory production control by the manufacturer, including product assessment. The manufacturer shall always retain the overall control and shall have the necessary means to take responsibility for the conformity of the product with its declared performance(s). SIST EN 15048-1:2016
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