SIST EN 3750:2026

SLOVENSKI STANDARD
01-maj-2026
Aeronavtika - Matica, sidrna, samozaporna, fiksna, rob 90°, zmanjšana serija, z
izvrtino za vijake, iz toplotnoodpornega jekla, namazana z MoS2 - Klasifikacija:
1100 MPa (pri temperaturi okolice)/315 °C
Aerospace series - Nut, anchor, self-locking, fixed, 90° corner, reduced series, with
counterbore, in heat resisting steel, MoS2 lubricated - Classification: 1 100 MPa (at
ambient temperature) / 315 °C
Luft- und Raumfahrt - Annietmutter, selbstsichernd, einseitiger verkürzter 90°
Eckflansch, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, MoS2-geschmiert
- Klasse: 1 100 MPa (bei Raumtemperatur) / 315 °C
Série aérospatiale - Écrous à river, à freinage interne, fixes, d'angle 90°, série réduite,
avec chambrage, en acier résistant à chaud, lubrifiés MoS2 - Classification : 1 100 MPa
(à température ambiante) / 315 °C
Ta slovenski standard je istoveten z: EN 3750:2026
ICS:
49.030.30 Matice Nuts
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 3750
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2026
EUROPÄISCHE NORM
ICS 49.030.30 Supersedes EN 3750:2010
English Version
Aerospace series - Nut, anchor, self-locking, fixed, 90°
corner, reduced series, with counterbore, in heat resisting
steel, MoS lubricated - Classification: 1 100 MPa (at
ambient temperature) / 315 °C
Série aérospatiale - Écrou à river, à freinage interne, Luft- und Raumfahrt - Annietmutter, selbstsichernd,
fixe, d'angle 90°, série réduite, avec chambrage, en einseitiger verkürzter 90°-Eckflansch, mit
acier résistant à chaud, lubrifié au MoS - Classification zylindrischer Aussenkung, aus hochwarmfestem Stahl,
: 1 100 MPa (à température ambiante)/315 °C MoS2-geschmiert - Klasse: 1 100 MPa (bei
Raumtemperatur)/315 °C
This European Standard was approved by CEN on 2 February 2026.

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
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COMITÉ EUROPÉEN DE NORMALISATIO N

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© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3750:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Required characteristics . 5
4.1 Configuration — Dimensions — Masses . 5
4.2 Materials . 5
4.3 Surface treatment . 5
5 Designation . 6
6 Marking . 7
7 Technical specification . 7
7.1 General. 7
7.2 Approval of manufacturers . 7
7.3 Qualification of products . 7
Bibliography . 8

European foreword
This document (EN 3750:2026) has been prepared by ASD-STAN.
After enquiries and votes carried out in accordance with the rules of this Association, this document has
received the approval of the National Associations and the Official Services of the member countries of
ASD-STAN, prior to its presentation to CEN.
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 September 2026, and conflicting national standards
shall be withdrawn at the latest by September 2026.
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 3750:2010.
— normative references updated;
— Clause 3 “Terms and definitions” added;
— Figure 1 corrected (hole diameter);
— Bibliography added.
Any feedback and questions on this document should be directed to the users’ national standards body.
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