EN 4312:2006
(Main)Aerospace series - Studs, coarse tolerance reduced shank, medium length thread, in heat and corrosion resisting steel, with aluminium pigmented coating - Classification: 1 100 MPa (at ambient temperature) / 315 °C
Aerospace series - Studs, coarse tolerance reduced shank, medium length thread, in heat and corrosion resisting steel, with aluminium pigmented coating - Classification: 1 100 MPa (at ambient temperature) / 315 °C
This standard specifies the characteristics of studs, close tolerance shank, medium length thread, in heat and corrosion resisting steel, with aluminium pigmented coating.
Classification: 1 100 MPa ) / 315 °C )
Luft- und Raumfahrt - Stift-Dehnschrauben, mit mittlerer Gewindelänge, aus hochwarmfestem und korrosionsbeständigem Stahl, mit aluminiumpigmentierter Beschichtung - Klasse: 1 100 Mpa (bei Raumtemperatur) / 315 °C
Diese Norm legt die Anforderungen an Stift-Dehnschrauben mit mittlerer Gewindelänge, aus hochwarmfestem und korrosionsbeständigem Stahl, mit aluminiumpigmentierter Beschichtung fest.
Klasse: 1 100 MPa )/315 C )
Série aérospatiale - Goujons, fût à tolérance large, filetage moyen, en acier résistant à chaud et à la corrosion, avec revêtement alumino-organique - Classification : 1 100 MPa (à température ambiante) / 315 °C
Aeronavtika - Elastični stebelni vijaki, široka toleranca, srednja navojna dolžina, iz toplotno in korozijsko odpornega jekla, z aluminijem pigmentiranim premazom - Klasifikacija: 1100 MPa (pri temperaturi okolice)/315 °C
General Information
- Status
- Published
- Publication Date
- 13-Jun-2006
- Withdrawal Date
- 30-Dec-2006
- Technical Committee
- ASD-STAN - Aerospace
- Drafting Committee
- ASD-STAN/D 3 - Mechanical
- Current Stage
- 9093 - Decision to confirm - Review Enquiry
- Start Date
- 31-May-2017
- Completion Date
- 28-Jan-2026
Relations
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
- Effective Date
- 28-Jan-2026
Overview
EN 4312:2006 is a CEN aerospace standard that defines the characteristics of studs with a reduced (close tolerance) shank and medium length MJ threads, made from heat- and corrosion-resisting steel and finished with an aluminium‑pigmented coating. The studs are classified by material strength and temperature capability: 1 100 MPa (minimum tensile strength at ambient temperature) and 315 °C (maximum service temperature determined by the coating). Dimensions and tolerances are specified after coating.
Key topics and requirements
- Scope and classification
- Studs with reduced/close tolerance shank and medium-length MJ threads.
- Strength class: 1100 MPa; max temperature 315 °C (coating-limited).
- Geometry, dimensions and masses
- Detailed tables for diameter codes, length codes and approximate masses (values in mm and kg/1000 pieces).
- Dimensions and tolerances apply after coating; optional hole (D3) and break‑sharp‑edges requirements.
- Threads and tolerances
- External threads per ISO 3353-1 (rolled threads) and MJ limit dimensions per ISO 5855-2.
- Form and position tolerances referenced to ISO 7913.
- Materials
- Heat- and corrosion-resisting steels as referenced in TR 3775 (strength class 1100 MPa).
- Surface treatment and lubrication
- Aluminium-pigmented coating per EN 4474; optional lubrication with cethylic alcohol (code E).
- Marking and designation
- Marking per EN 2424 (style C) with MJ indication.
- Example designation format: EN4312D050040E (standard number + diameter/length/hole/lubrication codes).
- Procurement and quality
- Technical specification references ISO 8168; manufacturer approval and quality management per EN 9100.
Applications and users
EN 4312 is intended for the aerospace supply chain where fasteners must combine high tensile strength, elevated-temperature performance and corrosion resistance. Typical users and applications include:
- Aerospace OEMs and component manufacturers specifying studs for airframes, engine mounts and hot-structure assemblies.
- Fastener manufacturers producing MJ‑thread studs to aerospace procurement requirements.
- Purchasing, quality assurance and design engineers who need standardized part designation, marking and inspection criteria.
- Maintenance and repair organizations selecting replacement studs that meet strength and temperature limits.
Related standards (selected)
- ISO 3353-1 - Rolled external threads
- ISO 5855-2 - MJ thread limit dimensions
- ISO 7913 - Tolerances of form and position
- ISO 8168 - Procurement specification for similar bolts
- EN 4474 - Aluminium pigmented coatings
- EN 2424 - Marking of aerospace products
- EN 9100 - Aerospace quality management
EN 4312 helps ensure consistent performance, interchangeability and traceability of high‑strength, heat‑resistant studs used in demanding aerospace environments.
Get Certified
Connect with accredited certification bodies for this standard
National Aerospace and Defense Contractors Accreditation Program (NADCAP)
Global cooperative program for special process quality in aerospace.
NSF-ISR
NSF International Strategic Registrations.
Orion Registrar Inc.
US-based certification body for management systems.
Sponsored listings
Frequently Asked Questions
EN 4312:2006 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Studs, coarse tolerance reduced shank, medium length thread, in heat and corrosion resisting steel, with aluminium pigmented coating - Classification: 1 100 MPa (at ambient temperature) / 315 °C". This standard covers: This standard specifies the characteristics of studs, close tolerance shank, medium length thread, in heat and corrosion resisting steel, with aluminium pigmented coating. Classification: 1 100 MPa ) / 315 °C )
This standard specifies the characteristics of studs, close tolerance shank, medium length thread, in heat and corrosion resisting steel, with aluminium pigmented coating. Classification: 1 100 MPa ) / 315 °C )
EN 4312:2006 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.
EN 4312:2006 has the following relationships with other standards: It is inter standard links to EN 2424:2008, EN 9100:2018, EN 840-6:2004+A1:2008, EN 14460:2006, EN 13200-3:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 4312:2006 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 hochwarmfestem und korrosionsbeständigem Stahl, mit aluminiumpigmentierter Beschichtung - Klasse: 1100 Mpa (bei Raumtemperatur)/315 °CSérie aérospatiale - Goujons, fût à tolérance large, filetage moyen, en acier résistant à chaud et à la corrosion, avec revêtement alumino-organique - Classification: 1100 MPa (à température ambiante)/315 °CAerospace series - Studs, coarse tolerance reduced shank, medium length thread, in heat and corrosion resisting steel, with aluminium pigmented coating - Classification: 1100 MPa (at ambient temperature)/315 °C49.030.20Sorniki, vijaki, stebelni vijakiBolts, screws, studs49.025.20AluminijAluminiumICS:Ta slovenski standard je istoveten z:EN 4312:2006SIST EN 4312:2009en,de01-julij-2009SIST EN 4312:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4312
June 2006 ICS 49.030.20 English Version
Aerospace series - Studs, coarse tolerance reduced shank, medium length thread, in heat and corrosion resisting steel, with aluminium pigmented coating - Classification: 1 100 MPa (at ambient temperature) / 315 °C
Série aérospatiale - Goujons, fût à tolérance large, filetage moyen, en acier résistant à chaud et à la corrosion, avec revêtement alumino-organique - Classification : 1 100 MPa (à température ambiante) / 315 °C
Luft- und Raumfahrt - Stift-Dehnschrauben, mit mittlerer Gewindelänge, aus korrosionsbeständigem und hochwarmfestem Stahl, mit Aluminium pigmenttete Beschichtung - 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 4312:2006: ESIST EN 4312:2009
...
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...