Aerospace series - Bolts, normal hexagonal head, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated - Classification: 1 100 MPa (at ambient temperature) / 425 °C

This standard specifies the characteristics of bolts, normal hexagonal head, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated.
Classification: 1 100 MPa  / 425 °C

Luft- und Raumfahrt - Sechskant-Paßschrauben, kurzes Gewinde, aus Titanlegierung, Aluminium-IVD-beschichtet - Klasse: 1 100 MPa (bei Raumtemperatur) / 425 °C

Diese Norm legt Eigenschaften von Sechskantschrauben, kurzes Gewinde, aus Titanlegierung, Aluminium-
IVD-beschichtet, fest.
Klasse: 1 100 MPa1)/425 °C2)

Série aérospatiale - Vis à tête hexagonale normale, fût normal à tolérance serrée, filetage court, en alliage de titane, revêtues aluminium IVD - Classification: 1 100 MPa (à température ambiante) / 425 °C

Aeronavtika - Sorniki, normalna šestroba glava, ozka toleranca, kratek navoj, iz titanove zlitine, prevlečene z aluminijem IVD - Klasifikacija: 1100 MPa (pri temperaturi okolice)/425 °C

General Information

Status
Published
Publication Date
21-Jul-2009
Withdrawal Date
30-Jan-2010
ICS
49.030.20 - Bolts, screws, studs
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 3 - Mechanical
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
21-Jan-2025
Completion Date
14-May-2025
Ref Project
SIST EN 4071:2009 - Aerospace series - Bolts, normal hexagonal head, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated - Classification: 1100 MPa (at ambient temperature)/425 °C

Overview

EN 4071:2009 is a CEN aerospace standard that specifies the characteristics of bolts, normal hexagonal head, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated. It defines the classification 1100 MPa (minimum tensile strength at ambient temperature) / 425 °C (maximum allowable temperature after return to ambient) and covers dimensions, materials, surface treatment, marking and procurement/quality requirements for aerospace fasteners.

Key topics and requirements

  • Bolt type and geometry: Normal hexagonal head, close-tolerance normal shank, short thread. Dimensions and tolerances conform to ISO 3193 (MJ thread series) and related dimensional tables in the standard.
  • Material: Titanium alloy per Aerospace TR 3775 with strength class 1 100 MPa.
  • Strength & temperature classification: Footnotes clarify that 1100 MPa is minimum tensile strength at ambient and 425 °C is the maximum temperature the coated bolt can tolerate without permanent change to properties (temperature limit is driven by surface treatment).
  • Surface treatment / coating: Aluminium ion vapor deposited (IVD) coating in accordance with MIL‑C‑83488C (Type II, Class 3), deposit thickness 4–12 µm. After deposition, mechanical blasting and a chromate conversion coating within 24 hours are required; optional lubrication with cethylic alcohol (code E).
  • Surface finish & form tolerances: Surface roughness per ISO 7913; form and position tolerances per ISO 7913 and ISO 9152 for procurement/specification (with EN 4071 modifications).
  • Identification & marking: Marking rules reference EN 2424; designation example format: EN4071D080060E (standard number, hole code, diameter code, length code, lubrication code).
  • Quality & approval: Manufacturer approval per EN 9100 and bolt qualification per EN 9133; technical procurement based on ISO 9152 (modified).
  • Related parts: Oversized bolt provision referenced to EN 4016.

Applications and users

  • Practical use: Specification for aerospace bolts where a combination of high static strength (1100 MPa) and elevated temperature resistance (up to 425 °C) is required, together with lightweight corrosion-resistant titanium alloy construction and controlled aluminium IVD coating.
  • Typical users:
    • Aerospace design and stress engineers specifying fasteners for structural or high-temperature assemblies
    • Fastener manufacturers and heat‑treatment/coating suppliers
    • Procurement and quality managers ensuring compliance with EN 4071:2009
    • Maintenance/overhaul organizations and certification authorities verifying part conformity

Related standards

  • ISO 3193, ISO 3353-1, ISO 5855-2, ISO 7913, ISO 9152 (procurement), EN 2424 (marking), EN 4016 (oversized bolts), EN 9100 (quality management), EN 9133 (qualification), MIL‑C‑83488C (aluminium IVD coating).

Keywords: EN 4071:2009, aerospace bolts, titanium alloy bolts, aluminium IVD coated, 1100 MPa, 425 °C, hexagonal head, MJ thread, close tolerance shank.

Frequently Asked Questions

EN 4071:2009 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Bolts, normal hexagonal head, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated - Classification: 1 100 MPa (at ambient temperature) / 425 °C". This standard covers: This standard specifies the characteristics of bolts, normal hexagonal head, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated. Classification: 1 100 MPa / 425 °C

This standard specifies the characteristics of bolts, normal hexagonal head, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated. Classification: 1 100 MPa / 425 °C

EN 4071:2009 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.

EN 4071:2009 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 - Sechskant-Paßschrauben, kurzes Gewinde, aus Titanlegierung, Aluminium IVD beschichtet - Klasse: 1100 MPa (bei Raumtemperatur)/425 °CSérie aérospatiale - Vis à tête hexagonale normale,
fût normal à tolérance serrée, filetage court, en alliage de titane, revêtues aluminium IVD - Classification: 1100 MPa (à température ambiante)/425 °CAerospace series - Bolts, normal hexagonal head, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated - Classification: 1100 MPa (at ambient temperature)/425 °C49.030.20Sorniki, vijaki, stebelni vijakiBolts, screws, studs49.025.30TitanTitanium49.025.20AluminijAluminiumICS:Ta slovenski standard je istoveten z:EN 4071:2009SIST EN 4071:2009en,de01-oktober-2009SIST EN 4071:2009SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4071
July 2009 ICS 49.030.20 English Version
Aerospace series - Bolts, normal hexagonal head, close tolerance normal shank, short thread, in titanium alloy, aluminium IVD coated - Classification: 1 100 MPa (at ambient temperature) / 425 °C
Série aérospatiale - Vis à tête hexagonale normale,
fût normal à tolérance serrée, filetage court, en alliage de titane, revêtues aluminium IVD - Classification: 1 100 MPa (à température ambiante) / 425 °C
Luft- und Raumfahrt - Sechskant-Paßschrauben, kurzes Gewinde, aus Titanlegierung, Aluminium IVD beschichtet - Klasse: 1 100 MPa (bei Raumtemperatur) / 425 °C This European Standard was approved by CEN on 23 April 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, 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 © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4071:2009: ESIST EN 4071:2009
...

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