Aerospace series - Studs, coarse tolerance reduced shank, medium length threads, in heat and corrosion resisting steel, MoS2 lubricated - Classification : 1 100 MPa (at ambient temperature) / 315 °C

This standard specifies the characteristics of studs, coarse tolerance reduced shank, medium length threads, in heat and corrosion resisting steel, MoS2 lubricated.
Classification: 1 100 MPa  ) / 315 °C  )
The shank is reduced for better tension fatigue strength life.

Luft- und Raumfahrt - Stift-Dehnschrauben, mit mittlerer Gewindelänge, aus korrosionsbeständigem und hochwarmfestem Stahl, MoS2-geschmiert - Klasse : 1 100 MPa (bei Raumtemperatur) / 315 °C

Diese Norm legt die Eigenschaften von Stift-Dehnschrauben mit mittlerer Gewindelänge aus korrosions¬beständigem und hochwarmfestem Stahl, MoS2-geschmiert, fest.
Klasse: 1 100 MPa ) / 315 °C ).
Der Schaft ist reduziert, um eine bessere Zeitstandfestigkeit im Zugschwellbereich zu erzielen

Série aérospatiale - Goujons, tige réduite à tolérance large, filetage moyen, en acier résistant à chaud et à la corrosion, lubrifiés MoS2 - Classification : 1 100 MPa (à température ambiante) / 315 °C

Aeronavtika - Elastični stebelni vijaki, široka toleranca, srednja navojna dolžina, iz toplotno in korozijsko odpornega jekla, namazani z MoS2 - Klasifikacija: 1100 MPa (pri temperaturi okolice)/315 °C

General Information

Status
Published
Publication Date
14-May-2009
ICS
49.030.20 - Bolts, screws, studs
Technical Committee
I13 - Imaginarni 13
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
09-Apr-2009
Due Date
14-Jun-2009
Completion Date
15-May-2009
Ref Project
EN 4311:2006 - Aerospace series - Studs, coarse tolerance reduced shank, medium length threads, in heat and corrosion resisting steel, MoS2 lubricated - Classification : 1 100 MPa (at ambient temperature) / 315 °C

Overview

EN 4311:2006 is a CEN aerospace standard that specifies the characteristics of studs, coarse tolerance reduced shank, medium length threads, manufactured from heat- and corrosion-resisting steel and MoS2 lubricated. The standard defines a strength classification: 1 100 MPa (minimum tensile strength at ambient temperature) and a maximum service/coating-related temperature 315 °C. The reduced shank geometry is specified to improve tension fatigue strength life, making these studs suitable for demanding aerospace environments.

Key topics and technical requirements

  • Material and strength: Heat- and corrosion-resisting steels with strength class 1 100 MPa (see TR 3775 for material guidance).
  • Temperature limit: Maximum temperature 315 °C - determined by the MoS2 coating characteristics.
  • Lubrication / coating: Molybdenum disulfide (MoS2) dry lubricant, applied at 5–10 µm per EN 2491; coating products listed in TR 4070.
  • Geometry and dimensions: Coarse tolerance, reduced shank, medium length threads with detailed diameter, length and mass tables (Figures and Tables in the standard); dimensions given in millimetres and apply before lubrication.
  • Thread and tolerance references: Rolled external threads per ISO 3353-1; MJ thread limit dimensions per ISO 5855-2; tolerances of form and position per ISO 7913.
  • Designation and marking: Standardized designation format (example: EN4311D050040F) and marking per EN 2424 (style C plus MJ).
  • Procurement and quality: Technical procurement reference ISO 8168 (with EN 9100 applied for manufacturer approval/quality management); qualification of studs is not applicable under this standard.

Applications and users

  • Intended for the aerospace industry where fasteners must resist high temperature and corrosive conditions and require improved fatigue life.
  • Typical users:
    • Aerospace design and structural engineers specifying fasteners
    • Fastener manufacturers and coating suppliers producing MoS2-lubricated studs
    • Procurement and quality assurance teams using the procurement/inspection references (ISO 8168, EN 9100)
    • Maintenance and repair organisations selecting replacement studs to match aerospace specifications

Related standards (normative references)

  • ISO 3353-1, ISO 5855-2, ISO 7913, ISO 8168
  • EN 2491 (MoS2 coating methods), EN 2424 (marking), EN 9100 (quality systems)
  • AECMA Technical Reports: TR 3775, TR 4070

Keywords: EN 4311:2006, aerospace studs, MoS2 lubricated, reduced shank, heat and corrosion resisting steel, 1 100 MPa, 315 °C, MJ threads, fastener standard.

Frequently Asked Questions

SIST EN 4311:2009 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Aerospace series - Studs, coarse tolerance reduced shank, medium length threads, in heat and corrosion resisting steel, MoS2 lubricated - Classification : 1 100 MPa (at ambient temperature) / 315 °C". This standard covers: This standard specifies the characteristics of studs, coarse tolerance reduced shank, medium length threads, in heat and corrosion resisting steel, MoS2 lubricated. Classification: 1 100 MPa ) / 315 °C ) The shank is reduced for better tension fatigue strength life.

This standard specifies the characteristics of studs, coarse tolerance reduced shank, medium length threads, in heat and corrosion resisting steel, MoS2 lubricated. Classification: 1 100 MPa ) / 315 °C ) The shank is reduced for better tension fatigue strength life.

SIST EN 4311:2009 is classified under the following ICS (International Classification for Standards) categories: 49.030.20 - Bolts, screws, studs. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN 4311:2009 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 - Stift-Dehnschrauben, mit mittlerer Gewindelänge, aus korrosionsbeständigem und hochwarmfestem Stahl, MoS2-geschmiert - Klasse : 1 100 MPa (bei Raumtemperatur) / 315 °CSérie aérospatiale - Goujons, tige réduite à tolérance large, filetage moyen, en acier résistant à chaud et à la corrosion, lubrifiés MoS2 - Classification : 1 100 MPa (à température ambiante) / 315 °CAerospace series - Studs, coarse tolerance reduced shank, medium length threads, in heat and corrosion resisting steel, MoS2 lubricated - Classification : 1 100 MPa (at ambient temperature) / 315 °C49.030.20Sorniki, vijaki, stebelni vijakiBolts, screws, studsICS:Ta slovenski standard je istoveten z:EN 4311:2006SIST EN 4311:2009en,de01-julij-2009SIST EN 4311:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4311
June 2006 ICS 49.030.20 English Version
Aerospace series - Studs, coarse tolerance reduced shank, medium length threads, in heat and corrosion resisting steel, MoS2 lubricated - Classification : 1 100 MPa (at ambient temperature) / 315 °C
Série aérospatiale - Goujons, tige réduite à tolérance large, filetage moyen, en acier résistant à chaud et à la corrosion, lubrifiés MoS2 - Classification : 1 100 MPa (à température ambiante) / 315 °C
Luft- und Raumfahrt - Stift-Dehnschrauben, mit mittlerer Gewindelänge, aus korrosionsbeständigem und hochwarmfestem Stahl, MoS2-geschmiert - Klasse : 1 100 MPa (bei Raumtemperatur) / 315 °C This European Standard was approved by CEN on 6 February 2006.
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 Central Secretariat 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 Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, 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: rue de Stassart, 36
B-1050 Brussels © 2006 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4311:2006: ESIST EN 4311:2009
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

Loading comments...