SIST EN 4012:2026
(Main)Aerospace series - Nuts, bihexagonal, self-locking, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), MoS2 coated - Classification: 1 550 MPa (at ambient temperature) / 425 °C
Aerospace series - Nuts, bihexagonal, self-locking, in heat resisting nickel base alloy NI-PH2601 (Inconel 718), MoS2 coated - Classification: 1 550 MPa (at ambient temperature) / 425 °C
This document specifies the characteristics of self-locking bihexagonal nuts in NI-PH2601, MoS2 coated, for aerospace applications.
Classification: 1 550 MPa /425 °C .
Luft- und Raumfahrt - Zwölfkantmutter, selbstsichernd, aus hochwarmfester Nickelbasislegierung NI-PH2601 (Inconel 718), MoS2-beschichtet - Klasse: 1 550 MPa (bei Raumtemperatur) / 425 °C
Série aérospatiale - Écrou bihexagonaux, à freinage interne, en alliage résistant à chaud à base de nickel NI-PH2601 (Inconel 718), revêtus MoS2 - Classification : 1 550 MPa (à température ambiante ) / 425 °C
Le présent document spécifie les caractéristiques des écrous bihexagonaux, à freinage interne, en NI PH2601, revêtus au MoS2, pour les applications aérospatiales.
Classification : 1 550 MPa /425 °C.
Aeronavtika - Zakovne matice, biheksagonalne, samozaporne, iz toplotnoodporne zlitine na nikljevi osnovi NI-PH2601 (Inconel 718), mazane z MoS2 - Klasifikacija: 1 550 MPa (pri temperaturi okolice)/425 °C
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2026
Nadomešča:
SIST EN 4012:2005
Aeronavtika - Zakovne matice, biheksagonalne, samozaporne, iz toplotnoodporne
zlitine na nikljevi osnovi NI-PH2601 (Inconel 718), mazane z MoS2 - Klasifikacija: 1
550 MPa (pri temperaturi okolice)/425 °C
Aerospace series - Nuts, bihexagonal, self-locking, in heat resisting nickel base alloy NI-
PH2601 (Inconel 718), MoS2 coated - Classification: 1 550 MPa (at ambient
temperature) / 425 °C
Luft- und Raumfahrt - Zwölfkantmutter, selbstsichernd, aus hochwarmfester
Nickelbasislegierung NI-PH2601 (Inconel 718), MoS2-beschichtet - Klasse: 1 550 MPa
(bei Raumtemperatur) / 425 °C
Série aérospatiale - Écrou bihexagonaux, à freinage interne, en alliage résistant à chaud
à base de nickel NI-PH2601 (Inconel 718), revêtus MoS2 - Classification : 1 550 MPa (à
température ambiante ) / 425 °C
Ta slovenski standard je istoveten z: EN 4012:2025
ICS:
49.030.30 Matice Nuts
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 4012
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2025
EUROPÄISCHE NORM
ICS 49.030.30 Supersedes EN 4012:2004
English Version
Aerospace series - Nut, bihexagonal, self-locking, in heat
resisting nickel base alloy NI-PH2601 (Inconel 718), MoS2
coated - Classification: 1 550 MPa (at ambient
temperature)/425 °C
Série aérospatiale - Écrou bihexagonal, à freinage Luft- und Raumfahrt - Zwölfkantmutter,
interne, en alliage résistant à chaud base nickel NI- selbstsichernd, aus hochwarmfester
PH2601 (Inconel 718), revêtu MoS2 - Classification : 1 Nickelbasislegierung NI-PH2601 (Inconel 718), MoS2-
550 MPa (à température ambiante)/425 °C beschichtet - Klasse: 1 550 MPa (bei
Umgebungstemperatur)/425 °C
This European Standard was approved by CEN on 25 August 2025.
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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4012:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Required characteristics . 4
4.1 Configuration – Dimensions – Tolerances – Masses . 4
4.2 Material . 4
4.3 Surface treatment . 5
5 Designation . 6
6 Marking . 6
7 Technical specification . 6
8 Quality management system . 6
Bibliography . 8
European foreword
This document (EN 4012:2025) 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 April 2026, and conflicting national standards shall be
withdrawn at the latest by April 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 4012:2004.
This document inclu
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.