EN ISO 14581:2023

Fasteners - Hexalobular socket countersunk flat head screws (common head style) with reduced loadability (ISO 14581:2022)

This document specifies the characteristics of hexalobular socket countersunk flat head screws with reduced loadability due to head design, in steel and stainless steel, with metric coarse pitch threads M2 to M10, and with product grade A.
If in certain cases other specifications are requested, stainless steel grades can be selected from ISO 3506‑1, and dimensional options from ISO 888 or ISO 4753.
NOTE 1   The reduced loadability (related to the countersunk head dimensions in combination with penetration of the hexalobular socket specified in this document) implies a limitation of ultimate tensile load shown by a specific marking (property class preceded by a zero). The loadability in the head is assumed to be 80 % of that in the thread for all sizes and all property classes; see Table 3.
NOTE 2   Hexalobular socket countersunk head screws (high head), with full loadability are specified in ISO 14582, but these products are not interchangeable, because of different head heights.
NOTE 3   Particular attention is needed to ensure alignment of the countersunk head with the bearing surface of the countersink in the assembly.

Verbindungselemente - Senkschrauben mit Innensechsrund (Einheitskopf) mit reduzierter Belastbarkeit (ISO 14581:2022)

Dieses Dokument legt die Eigenschaften von Senkschrauben mit Innensechsrund mit reduzierter Belastbarkeit aufgrund ihrer Kopfgeometrie in Stahl und nichtrostendem Stahl mit metrischen Regelgewinden von M2 bis M10 in Produktklasse A fest.
Falls in bestimmten Fällen andere Festlegungen gefordert werden, können die nichtrostenden Stahlsorten nach ISO 3506 1 und maßliche Alternativen nach ISO 888 oder ISO 4753 ausgewählt werden.
ANMERKUNG 1   Die reduzierte Belastbarkeit (bezogen auf die Kopfgeometrie in Kombination mit der in diesem Dokument festgelegten Eindringtiefe des Innensechsrunds) bringt eine Begrenzung der Mindestbruchkraft mit sich, die durch eine spezifische Kennzeichnung (Festigkeitsklasse mit vorangestellter Null) angezeigt wird. Es wird angenommen, dass die Belastbarkeit im Kopf 80 % der Belastbarkeit im Gewinde für alle Größen und alle Festigkeitsklassen beträgt; siehe Tabelle 3.
ANMERKUNG 2   Senkkopfschrauben mit Innensechsrund (mit hohem Kopf) mit voller Belastbarkeit sind in ISO 14582 festgelegt, jedoch sind diese Produkte aufgrund unterschiedlicher Kopfhöhen nicht austauschbar.
ANMERKUNG 3   Besondere Aufmerksamkeit ist notwendig, um ein Fluchten des Senkkopfes mit der Auflagefläche der Ansenkung in der Baugruppe sicherzustellen.

Fixations - Vis à tête fraisée (tête commune) à six lobes internes à capacité de charge réduite (ISO 14581:2022)

Le présent document spécifie les caractéristiques des vis à tête fraisée à six lobes internes à capacité de charge réduite du fait de la conception de la tête, en acier et en acier inoxydable, à filetage métrique à pas gros M2 à M10, et de grade A.
Si dans certains cas d’autres spécifications sont requises, les grades d’acier inoxydable peuvent être choisis dans l'ISO 3506‑1, et les options dimensionnelles dans l'ISO 888 ou l'ISO 4753.
NOTE 1      La capacité de charge réduite (du fait des dimensions de la tête fraisée et de la profondeur de pénétration du six pans creux spécifiées dans le présent document) implique une limitation de la charge minimale de rupture à la traction, indiquée par un marquage spécifique (classe de qualité prédédée d’un zéro). La capacité de charge dans la tête est considérée comme égale à 80 % de la résistance du filetage pour toutes les dimensions et pour toutes les classes de qualité; voir Tableau 3.
NOTE 2      Les vis à tête fraisée à six lobes internes (tête haute), à capacité de charge intégrale, sont spécifiées dans l’ISO 14582, mais ces produits ne sont pas interchangeables en raison de hauteurs de tête différentes.
NOTE 3      Une attention toute particulière est nécessaire pour assurer l’alignement de la tête fraisée avec la fraisure de la surface d’appui lors de l’assemblage.

Vezni elementi - Notranji šestrogeljnik v ugrezni ploski glavi vijaka (običajna oblika glave) z manjšo obremenljivostjo (ISO 14581:2022)

Ta dokument določa lastnosti vijakov z notranjim šestrogeljnikom v ugrezni ploski glavi z manjšo obremenljivostjo zaradi zasnove glave, v jeklu in nerjavnem jeklu, z grobim metričnim navojem velikosti od M2 do M10, in razredom izdelave A.
Če se v določenih primerih zahtevajo druge specifikacije, je razrede lastnosti nerjavnega jekla mogoče izbrati po standardu ISO 3506-1, dimenzijske možnosti pa po ISO 888 ali ISO 4753.
OPOMBA 1: Zmanjšana obremenljivost (povezana z dimenzijami ugreznjene glave v kombinaciji s prebojem šestrogeljnika, navedenega v tem dokumentu) pomeni omejitev končne natezne sile, ki ima posebno oznako (razred lastnosti z ničlo na začetku). Predpostavlja se, da je obremenljivost v glavi 80 % tiste v navoju za vse velikosti in vse razrede lastnosti; glej preglednico 3.
OPOMBA 2: V standardu ISO 14582 so določeni vijaki s šestrogeljnikom v ugreznjeni glavi (visoka glava) s polno obremenljivostjo, vendar ti izdelki zaradi različnih višin glave niso zamenljivi.
OPOMBA 3: Posebej je treba paziti na poravnavo ugreznjene glave z naležno površino ugreza v sklopu.

General Information

• Status: Published
• Publication Date: 10-Jan-2023
• ICS: 21.060.10 - Bolts, screws, studs
• Technical Committee: CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
• Drafting Committee: CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 11-Jan-2023
• Completion Date: 11-Jan-2023
• Ref Project: SIST EN ISO 14581:2023 - Fasteners - Hexalobular socket countersunk flat head screws (common head style) with reduced loadability (ISO 14581:2022)

Relations

• Replaces: EN ISO 14581:2013 - Fasteners - Hexalobular socket countersunk flat head screws (ISO 14581:2013)
• Effective Date: 16-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 14581:2023
01-marec-2023
Nadomešča:
SIST EN ISO 14581:2014
Vezni elementi - Notranji šestrogeljnik v ugrezni ploski glavi vijaka (običajna oblika
glave) z manjšo obremenljivostjo (ISO 14581:2022)
Fasteners - Hexalobular socket countersunk flat head screws (common head style) with
reduced loadability (ISO 14581:2022)
Verbindungselemente - Senkschrauben mit Innensechsrund (Einheitskopf) mit
reduzierter Belastbarkeit (ISO 14581:2022)
Fixations - Vis à tête fraisée (tête commune) à six lobes internes à capacité de charge
réduite (ISO 14581:2022)
Ta slovenski standard je istoveten z: EN ISO 14581:2023
ICS:
21.060.10 Sorniki, vijaki, stebelni vijaki Bolts, screws, studs
SIST EN ISO 14581:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN ISO 14581:2023

---------------------- Page: 2 ----------------------
SIST EN ISO 14581:2023


EN ISO 14581
EUROPEAN STANDARD

NORME EUROPÉENNE

January 2023
EUROPÄISCHE NORM
ICS 21.060.10 Supersedes EN ISO 14581:2013
English Version

Fasteners - Hexalobular socket countersunk flat head
screws (common head style) with reduced loadability (ISO
14581:2022)
Fixations - Vis à tête fraisée (tête commune) à six lobes Verbindungselemente - Senkschrauben mit
internes à capacité de charge réduite (ISO 14581:2022) Innensechsrund (Einheitskopf) mit reduzierter
Belastbarkeit (ISO 14581:2022)
This European Standard was approved by CEN on 26 November 2022.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14581:2023 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------
SIST EN ISO 14581:2023
EN ISO 14581:2023 (E)
Contents Page
European foreword . 3

2

---------------------- Page: 4 ----------------------
SIST EN ISO 14581:2023
EN ISO 14581:2023 (E)
European foreword
This document (EN ISO 14581:2023) has been prepared by Technical Committee ISO/TC 2 "Fasteners"
in collaboration with Technical Committee CEN/TC 185 “Fasteners” the secretariat of which is held by
BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by July 2023, and conflicting national standards shall be
withdrawn at the latest by July 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 14581:2013.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 14581:2022 has been approved by CEN as EN ISO 14581:2023 without any modification.

3

---------------------- Page: 5 ----
...