Aerospace series - Shank nuts, self-locking, in heat resisting steel FE-PA2601 (A286), silver plated on thread - Classification: 1 100 MPa (at ambient temperature) / 650 °C

This document specifies the characteristics of self-locking shank nuts in FE PA2601, silver plated on thread, for aerospace applications.
Classification: 1 100 MPa / 650 °C.

Luft- und Raumfahrt - Einnietmuttern, selbstsichernd, aus hochwarmfestem Stahl FE-PA2601 (A286), Gewinde versilbert - Klasse: 1 100 MPa (bei Raumtemperatur) / 650 °C

Diese Europäische Norm legt die Eigenschaften von selbstsichernden Einnietmuttern aus FE PA2601, Gewinde versilbert, für Anwendungen in der Luft  und Raumfahrt fest.
Klasse: 1 100 MPa/650 °C

Série aérospatiale - Écrous à sertir, à freinage interne, en acier résistant à chaud FE-PA2601 (A286), argentés sur filetage - Classification : 1 100 MPa (à température ambiante ) / 650 °C

La présente norme spécifie les caractéristiques des écrous à sertir, à freinage interne, en FE-PA2601, argentés sur filetage, pour applications aérospatiales.
Classification : 1 100 MPa / 650 °C

Aeronavtika - Zakovičene matice, samovarovalne, iz toplotno odpornega jekla FE-PA2601 (A286), posrebreni navoji - Klasifikacija: 1100 MPa (pri temperaturi okolice)/650 °C

Ta dokument določa lastnosti samoblokirnih sidrnih matic s posrebreni navoji iz FE-PA2601 za uporabo v aeronavtiki.
Klasifikacija: 1 100 MPa1/650 °C2.

General Information

Status
Published
Publication Date
05-Jun-2018
ICS
49.030.30 - Nuts
Technical Committee
I13 - Imaginarni 13
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
30-May-2018
Due Date
04-Aug-2018
Completion Date
06-Jun-2018
Ref Project
EN 4122:2018 - Aerospace series - Shank nuts, self-locking, in heat resisting steel FE-PA2601 (A286), silver plated on thread - Classification: 1 100 MPa (at ambient temperature) / 650 °C

Relations

Replaces
SIST EN 4122:2005 - Aerospace series - Shank nuts, self-locking, in heat resisting steel FE-PA2601 (A286), silver plated on thread - Classification: 1 100 MPa (at ambient temperature) / 650 °C
Effective Date
23-May-2018
Revised
SIST EN 4122:2005 - Aerospace series - Shank nuts, self-locking, in heat resisting steel FE-PA2601 (A286), silver plated on thread - Classification: 1 100 MPa (at ambient temperature) / 650 °C
Effective Date
30-Nov-2016

Overview

EN 4122:2018 specifies the characteristics of aerospace shank nuts that are self-locking, manufactured from heat‑resisting steel FE‑PA2601 (A286) and silver plated on the thread. It applies to parts classified for minimum tensile capacity 1 100 MPa (ambient temperature) and a maximum test temperature of 650 °C. This European Standard (CEN) supersedes EN 4122:2004 and is intended for aerospace applications requiring heat‑resistant, high‑strength fasteners.

Key topics and technical requirements

  • Materials
    • Base material: FE‑PA2601 (A286) as referenced to EN 2399 or EN 3639.
  • Configuration, dimensions and tolerances
    • Detailed dimensional requirements, tolerances and masses are provided (figures and Table 1); dimensions are in millimetres and apply after silver plating.
    • Threads follow MJ series limits (see ISO 5855‑2 for MJ thread limit dimensions).
    • Self‑locking function is achieved by forming a controlled out‑of‑round zone in the locking area (tooling marks permissible).
  • Surface treatment / plating
    • Electrolytic silver plating on thread and chamfers in accordance with EN 2786.
    • Minimum thickness: MJ6 threads - 5 µm minimum on thread flanks; MJ5 threads must show complete coverage (no thickness requirement). Plating may optionally extend to counterbore and chamfers.
  • Designation and marking
    • Designation format and marking follow EN 2424 (style A); marking locations are specified to avoid the locking area.
  • Classification
    • Mechanical classification: 1 100 MPa minimum tensile (ambient) and 650 °C maximum test temperature.

Applications and users

EN 4122:2018 is aimed at professionals needing standardized, high‑temperature, self‑locking shank nuts for aerospace assemblies. Typical users include:

  • Aerospace fastener manufacturers and suppliers
  • Aircraft OEMs and structural designers
  • Maintenance, Repair & Overhaul (MRO) organizations
  • Procurement and quality assurance teams enforcing conformity to aerospace fastener standards

These nuts are suitable wherever high strength and heat resistance are required, and where predictable locking performance and standardized marking/identification are essential.

Related standards

  • EN 2399 - Heat resisting steel FE‑PA2601 (A286) bars for forged bolts
  • EN 3639 - FE‑PA2601 wire for forged fasteners
  • EN 2786 - Electrolytic silver plating of fasteners
  • EN 3004 - Technical specification for similar self‑locking nuts in FE‑PA2601
  • EN 2424 - Marking of aerospace products
  • ISO 5855‑2 - MJ threads - limit dimensions

Keywords: EN 4122:2018, shank nuts, self‑locking, FE‑PA2601, A286, silver plated, aerospace fasteners, heat resisting steel, 1100 MPa, 650 °C.

Frequently Asked Questions

SIST EN 4122:2018 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Shank nuts, self-locking, in heat resisting steel FE-PA2601 (A286), silver plated on thread - Classification: 1 100 MPa (at ambient temperature) / 650 °C". This standard covers: This document specifies the characteristics of self-locking shank nuts in FE PA2601, silver plated on thread, for aerospace applications. Classification: 1 100 MPa / 650 °C.

This document specifies the characteristics of self-locking shank nuts in FE PA2601, silver plated on thread, for aerospace applications. Classification: 1 100 MPa / 650 °C.

SIST EN 4122:2018 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 4122:2018 has the following relationships with other standards: It is inter standard links to SIST EN 4122:2005, SIST EN 4122:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

You can purchase SIST EN 4122:2018 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of SIST standards.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.HPSHUDWXULLuft- und Raumfahrt - Einnietmuttern, selbstsichernd, aus hochwarmfestem Stahl FE-PA2601 (A286), Gewinde versilbert - Klasse: 1 100 MPa (bei Raumtemperatur) / 650 °CSérie aérospatiale - Écrous à sertir, à freinage interne, en acier résistant à chaud FE-PA2601 (A286), argentés sur filetage - Classification : 1 100 MPa (à température ambiante ) / 650 °CAerospace series - Shank nuts, self-locking, in heat resisting steel FE-PA2601 (A286), silver plated on thread - Classification: 1 100 MPa (at ambient temperature) / 650 °C49.030.30MaticeNutsICS:Ta slovenski standard je istoveten z:EN 4122:2018SIST EN 4122:2018en,fr,de01-julij-2018SIST EN 4122:2018SLOVENSKI
STANDARDSIST EN 4122:20051DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4122
May 2018 ICS 49.030.30 Supersedes EN 4122:2004
English Version
Aerospace series - Shank nuts, self-locking, in heat resisting steel FE-PA2601 (A286), silver plated on thread - Classification: 1 100 MPa (at ambient temperature) / 650 °C
Série aérospatiale - Écrous à sertir, à freinage interne, en acier résistant à chaud FE-PA2601 (A286), argentés sur filetage - Classification : 1 100 MPa (à température ambiante ) / 650 °C
Luft- und Raumfahrt - Einnietmuttern, selbstsichernd, aus hochwarmfestem Stahl FE-PA2601 (A286), Gewinde versilbert - Klasse: 1 100 MPa (bei Raumtemperatur) / 650 °C This European Standard was approved by CEN on 22 January 2018.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey 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 © 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4122:2018 E SIST EN 4122:2018

Page European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Required characteristics . 4 3.1 Configuration — Dimensions — Tolerances — Masses . 4 3.2 Materials . 4 3.3 Surface treatment . 4 4 Designation. 6 5 Marking . 6 6 Technical specification . 6
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