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

This European Standard specifies the characteristics of self-locking serrated shank nuts in FE-PA2601, for aerospace applications.
Classification: 1 100 MPa1) / 650 °C 2).
NOTE FE-PA2601 is the new designation for FE-PA92HT, see TR 3900.

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

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

La présente Norme Européenne spécifie les caractéristiques des écrous à sertir, dentelés, à freinage interne, en FE-PA2601, pour les applications aérospatiales.
Classification : 1 100 MPa ) / 650 °C  ).
NOTE   FE-PA2601 est la nouvelle désignation pour FE-PA92HT, voir TR 3900.

Aeronavtika - Sidrne/utrdilne matice, samoblokirne, nazobčane, iz toplotnoodpornega jekla FE-PA2601 (A286), posrebrene - Klasifikacija: 1100 MPa (pri okoljski temperaturi)/650 °C

Ta evropski standard določa lastnosti samoblokirnih nazobčanih sidrnih matic v FE-PA2601 za uporabo v aeronavtiki.
Razvrstitev: 1 100 MPa1) / 650 °C 2).
OPOMBA: FE-PA2601 je nova oznaka za FE-PA92HT, glejte TR 3900.

General Information

Status
Published
Publication Date
09-Jul-2015
ICS
49.030.30 - Nuts
Technical Committee
I13 - Imaginarni 13
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
08-Jul-2015
Due Date
12-Sep-2015
Completion Date
10-Jul-2015
Ref Project
EN 3015:2015 - Aerospace series - Shank nuts, self-locking, serrated, in heat resisting steel FE-PA2601 (A286), silver plated - Classification: 1 100 MPa (at ambient temperature) / 650 °C

Relations

Replaces
SIST EN 3015:2002 - Aerospace series - Shank nuts, self-locking, serrated, in heat resisting steel FE-PA2601 (A286), silver plated - Classification: 1 100 MPa (at ambient temperature) / 650 °C
Effective Date
01-Sep-2015

Overview

SIST EN 3015:2015 is a European standard developed by CEN that specifies the characteristics of self-locking, serrated shank nuts made from heat-resistant steel FE-PA2601 (A286), silver plated, for aerospace applications. These nuts are designed to provide secure fastening in high-temperature environments, with a classification of 1,100 MPa tensile strength at ambient temperature and resistance up to 650 °C. The standard ensures consistent manufacturing quality, dimensions, material properties, and performance criteria essential for aerospace safety and reliability.

The FE-PA2601 steel designation represents a heat-resistant alloy formerly known as FE-PA92HT, optimized for demanding aerospace conditions, providing excellent mechanical strength and corrosion resistance at elevated temperatures. SIST EN 3015:2015 replaces the earlier EN 3015:2001, updating technical specifications and manufacturing tolerances.

Key Topics

  • Material Specification
    The nuts are manufactured from FE-PA2601 (A286), a high-strength, heat-resistant steel alloy suitable for aerospace components operating up to 650 °C. The material complies with referenced standards EN 2399 and EN 3639 for forged bolts and fastener wire.

  • Design and Dimensions
    SIST EN 3015:2015 defines precise dimensions, tolerances, and geometric configuration of the self-locking serrated shank nuts, including thread codes (MJ5×0.8, MJ6×1, MJ7×1, MJ8×1) with detailed parameters such as pitch diameter, serration length, and number of teeth. Tight control on out-of-round deformation ensures optimal locking performance.

  • Self-Locking Serrated Feature
    Serrations on the nut facilitate an internal braking function to prevent loosening under vibration or thermal cycling. The formation of out-of-round threads in the locking zone enhances the locking effect while maintaining load capacity.

  • Marking and Identification
    Nuts are marked according to EN 2424, enabling traceability and compliance verification. Marking styles include specifications on thread size and production batch to ensure quality control.

  • Installation Guidelines
    Installation procedures follow EN 3064, with specific requirements for installation holes per EN 3065. Proper attention to the notch sensitivity of the mounting material is crucial to preserving the integrity of the assembly.

Applications

SIST EN 3015:2015 shank nuts are primarily used in aerospace structures and components where high mechanical strength and temperature resistance are critical. Typical aerospace applications include:

  • Aircraft structural fasteners - ensuring secure assembly of airframes, engine mounts, and other high-stress components.
  • High-temperature engine components - fastening parts exposed to thermal cycling and elevated temperatures.
  • Defense and space vehicles - requiring reliable, lightweight, and heat-resistant fastening solutions.
  • Maintenance and repair operations - where standardized, traceable fasteners ease replacement and quality assurance.

Their robust self-locking serrated design helps mitigate risks of loosening due to vibration and thermal effects, improving operational safety and reducing maintenance frequency.

Related Standards

SIST EN 3015:2015 interfaces with several aerospace and fastening standards to ensure harmonized design and quality control:

  • EN 2399 - Specification of the heat-resistant steel FE-PA2601 used for the nuts.
  • EN 2424 - Marking standards for aerospace products, ensuring traceability and identification.
  • EN 3004 - Technical specification for self-locking nuts in FE-PA2601 steel.
  • EN 3064 - Installation procedure for shank nuts, ensuring correct mounting practice.
  • EN 3065 - Design standard for installation holes optimized for self-locking serrated nuts.
  • ISO 5855-2 - Thread dimensions and limits for aerospace MJ threads.
  • TR 3900 - Technical report clarifying the designation system for metallic aerospace materials.

Together, these standards provide a comprehensive framework facilitating quality, safety, and interoperability of aerospace fastening components.

Keywords: SIST EN 3015:2015, aerospace fasteners, self-locking serrated shank nuts, FE-PA2601 steel, heat resistant nuts, high-temperature aerospace nuts, aerospace fastening standards, serrated self-locking nuts, aerospace hardware compliance, heat-resistant steel nuts

Frequently Asked Questions

SIST EN 3015:2015 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Shank nuts, self-locking, serrated, in heat resisting steel FE-PA2601 (A286), silver plated - Classification: 1 100 MPa (at ambient temperature) / 650 °C". This standard covers: This European Standard specifies the characteristics of self-locking serrated shank nuts in FE-PA2601, for aerospace applications. Classification: 1 100 MPa1) / 650 °C 2). NOTE FE-PA2601 is the new designation for FE-PA92HT, see TR 3900.

This European Standard specifies the characteristics of self-locking serrated shank nuts in FE-PA2601, for aerospace applications. Classification: 1 100 MPa1) / 650 °C 2). NOTE FE-PA2601 is the new designation for FE-PA92HT, see TR 3900.

SIST EN 3015:2015 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 3015:2015 has the following relationships with other standards: It is inter standard links to SIST EN 3015:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN 3015:2015 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.]Luft- und Raumfahrt - Einnietmuttern, schraubensichernd, verzahnt, aus hochwarmfestem Stahl FE-PA2601 (A286), versilbert - Klassifikation: 1 100 MPa (bei Raumtemperatur) / 650 °CSérie aérospatiale - Ecrous à sertir, dentelés, à freinage interne, en acier résistant à chaud FE-PA2601 (A286), argentés - Classification : 1 100 MPa (à température ambiante) / 650 °CAerospace series - Shank nuts, self-locking, serrated, in heat resisting steel FE-PA2601 (A286), silver plated - Classification: 1 100 MPa (at ambient temperature) / 650 °C49.030.30MaticeNutsICS:Ta slovenski standard je istoveten z:EN 3015:2015SIST EN 3015:2015en,fr,de01-september-2015SIST EN 3015:2015SLOVENSKI
STANDARDSIST EN 3015:20021DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 3015
June 2015 ICS 49.030.30 Supersedes EN 3015:2001English Version
Aerospace series - Shank nuts, self-locking, serrated, in heat resisting steel FE-PA2601 (A286), silver plated - Classification: 1 100 MPa (at ambient temperature) / 650 °C
Série aérospatiale - Ecrous à sertir, dentelés, à freinage interne, en acier résistant à chaud FE-PA2601 (A286), argentés - Classification : 1 100 MPa (à température ambiante) / 650 °C
Luft- und Raumfahrt - Einnietmuttern, schraubensichernd, verzahnt, aus hochwarmfestem Stahl FE-PA2601 (A286), versilbert - Klassifikation: 1 100 MPa (bei Raumtemperatur) / 650 °C This European Standard was approved by CEN on 5 December 2014.
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, 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:
Avenue Marnix 17,
B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3015:2015 ESIST EN 3015:2015

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 .5 4 Designation .6 5 Marking .6 6 Technical specification .6 7 Installation .6 Annex A (informative)
Standard evolution form .7
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