Aerospace series - Nuts, anchor, self-locking, fixed, two lug, reduced series, with counterbore, in heat resisting steel, MoS2 lubricated - Classification: 1100 MPa (at ambient temperature)/315 °C

This European Standard specifies the characteristics of two lug, reduced series, counterbored fixed anchor nuts, with a self-locking feature achieved by forming the upper portion out-of-round, in heat resisting steel, MoS2 lubricated.
Classification: 1 100 MPa  / 315 °C

Luft- und Raumfahrt - Annietmuttern, selbstsichernd, beiderseitiger verkürzter Flansch, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, MoS2-geschmiert - Klasse: 1100 MPa (bei Raumtemperatur)/315 °C

Diese Norm legt die Merkmale von Annietmuttern mit zylindrischer Aussenkung und beiderseitigem
verkürztem Flansch, selbstsichernd durch ovale Formgebung des oberen Teils, aus hochwarmfestem Stahl,
MoS2-geschmiert, fest.
Klasse: 1 100 MPa 1) / 315 °C 2)

Série aérospatiale - Écrous à river, à freinage interne, fixes, double patte, série reduite, avec chambrage, en acier résistant à chaud, lubrifiés MoS2 - Classification: 1100 MPa (à température ambiante)/315 °C

Aeronavtika - Zakovne matice, samovarovalne, fiksne, dvostranske, skrajšana serija, z izvrtino za valjaste vijake, iz toplotnoodpornega jekla, mazane z MoS2 - Klasifikacija: 1100 MPa (pri temperaturi okolice)/315 °C

Ta evropski standard določa značilnosti dvostranskih fiksnih zakovnih matic, skrajšana serija, z izvrtino za vijake, s samozapiranjem, ki je omogočeno tako, da je zgornji del oblikovan ovalno, iz toplotnoodpornega jekla, mazanih z MoS2. Klasifikacija: 1.100 MPa (pri temperaturi okolice)/315 °C.

General Information

Status
Published
Publication Date
07-Mar-2010
ICS
49.030.30 - Nuts
Technical Committee
I13 - Imaginarni 13
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Mar-2010
Due Date
06-May-2010
Completion Date
08-Mar-2010
Ref Project
EN 3538:2010 - Aerospace series - Nuts, anchor, self-locking, fixed, two lug, reduced series, with counterbore, in heat resisting steel, MoS2 lubricated - Classification: 1 100 MPa (at ambient temperature)/315 °C

Overview

EN 3538:2010 is a CEN (European) aerospace standard that specifies the characteristics and procurement requirements for anchor nuts, self‑locking, fixed, two‑lug, reduced series with a counterbore. These nuts are manufactured in heat‑resisting steel, MoS2 (molybdenum disulphide) lubricated, and are classified 1100 MPa (at ambient temperature) / 315 °C. The self‑locking feature is achieved by forming the upper portion of the nut out‑of‑round. EN 3538 is intended for aerospace applications where high strength and elevated temperature resistance are required.

Key topics and requirements

  • Product configuration and dimensions
    • Two‑lug (double‑patte), reduced‑series anchor nuts with counterbore; dimensions and tolerances conform to ISO 3225 and are expressed in millimetres.
    • Supplied for MJ threads (see ISO 5855‑2 for thread limits). Diameter codes include typical sizes (e.g., MJ4, MJ5, MJ6).
  • Self‑locking feature
    • Achieved by forming the upper portion out‑of‑round (tooling marks permitted in this area).
  • Materials and heat resistance
    • Heat‑resisting steels per EN 2398 / EN 2399 / EN 3638 / EN 3639 or TR 3791.
    • Classification: 1100 MPa corresponds to the associated bolt strength the nut can withstand at ambient temperature; 315 °C is the maximum temperature the nut can tolerate without permanent alteration after cooling (surface treatment dependent).
  • Surface treatment and lubrication
    • MoS2 dry lubricant applied per EN 2491 (coating method referenced).
  • Form, position and surface finish
    • Tolerances per ISO 8788; surface texture and edge‑break guidelines specified.
  • Marking and identification
    • Marking style per EN 2424; designation format defined (e.g., EN3538–060).
  • Quality and procurement
    • Manufacturer approval and quality systems per EN 9100; product qualification per EN 9133; technical procurement guidance references ISO 5858.

Applications and users

  • Typical users:
    • Aerospace design and structural engineers specifying fasteners for airframe and propulsion attachments.
    • Fastener manufacturers and suppliers producing high‑temperature, self‑locking anchor nuts.
    • Quality, procurement and certification teams ensuring parts meet aerospace standards.
  • Practical applications:
    • High‑strength, heat‑resisting fastening points in aircraft and aerospace systems where vibration resistance, temperature durability and positive locking are required (e.g., engine mounts, hot‑structure assemblies).

Related standards

  • ISO 3225, ISO 5855‑2, ISO 8788, EN 2398, EN 2399, EN 3638, EN 3639, EN 2491, EN 2424, EN 9100, EN 9133, TR 3791.

Keywords: EN 3538:2010, aerospace nuts, anchor nut, self‑locking nut, two lug, reduced series, counterbore, heat resisting steel, MoS2 lubricant, 1100 MPa, 315 °C, MJ threads.

Frequently Asked Questions

SIST EN 3538:2010 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Nuts, anchor, self-locking, fixed, two lug, reduced series, with counterbore, in heat resisting steel, MoS2 lubricated - Classification: 1100 MPa (at ambient temperature)/315 °C". This standard covers: This European Standard specifies the characteristics of two lug, reduced series, counterbored fixed anchor nuts, with a self-locking feature achieved by forming the upper portion out-of-round, in heat resisting steel, MoS2 lubricated. Classification: 1 100 MPa / 315 °C

This European Standard specifies the characteristics of two lug, reduced series, counterbored fixed anchor nuts, with a self-locking feature achieved by forming the upper portion out-of-round, in heat resisting steel, MoS2 lubricated. Classification: 1 100 MPa / 315 °C

SIST EN 3538:2010 is classified under the following ICS (International Classification for Standards) categories: 49.030.30 - Nuts. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 3538:2010 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.Aeronavtika - Zakovne matice, samovarovalne, fiksne, dvostranske, skrajšana serija, z izvrtino za valjaste vijake, iz toplotnoodpornega jekla, mazane z MoS2 - Klasifikacija: 1100 MPa (pri temperaturi okolice)/315 °CLuft- und Raumfahrt - Annietmuttern, selbstsichernd, beiderseitiger verkürzter Flansch, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, MoS2-geschmiert - Klasse: 1100 MPa (bei Raumtemperatur)/315 °CSérie aérospatiale - Écrous à river, à freinage interne, fixes, double patte, série reduite, avec chambrage, en acier résistant à chaud, lubrifiés MoS2 - Classification: 1100 MPa (à température ambiante)/315 °CAerospace series - Nuts, anchor, self-locking, fixed, two lug, reduced series, with counterbore, in heat resisting steel, MoS2 lubricated - Classification: 1100 MPa (at ambient temperature)/315 °C49.030.30MaticeNutsICS:Ta slovenski standard je istoveten z:EN 3538:2010SIST EN 3538:2010en01-april-2010SIST EN 3538:2010SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3538
February 2010 ICS 49.030.30 English Version
Aerospace series - Nuts, anchor, self-locking, fixed, two lug, reduced series, with counterbore, in heat resisting steel, MoS2 lubricated - Classification: 1 100 MPa (at ambient temperature)/315 °C
Série aérospatiale - Écrous à river, à freinage interne, fixes, double patte, série reduite, avec chambrage, en acier résistant à chaud, lubrifiés MoS2 - Classification: 1 100 MPa (à température ambiante)/315 °C
Luft- und Raumfahrt - Annietmuttern, selbstsichernd, beiderseitiger verkürzter Flansch, mit zylindrischer Aussenkung, aus hochwarmfestem Stahl, MoS2-geschmiert - Klasse: 1 100 MPa (bei Raumtemperatur)/315 °C This European Standard was approved by CEN on 18 December 2009.
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 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3538:2010: ESIST EN 3538:2010
...

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