Aerospace series - Hexagonal bars, drawn in aluminium and aluminium alloys - Tolerance class h 11 - Width across flats 7 mm < a < 50 mm - Dimensions

This standard specifies the dimensions and tolerances of:
Hexagonal bars, drawn
in aluminium and aluminium alloys
Tolerance class h 11
Width across flats 7 mm < a < 50 mm
for aerospace applications.

Luft- und Raumfahrt - Sechskantstangen, gezogen aus Aluminium und Aluminiumlegierungen - Toleranzklasse h 11 - Schlüsselweite 7 mm < a < 50 mm - Maße

Diese Norm legt die Maße und Toleranzen von
Sechskantstangen, gezogen
aus Aluminium und Aluminiumlegierungen
Toleranzklasse h 11
Schlüsselweite 7 mm < a < 50 mm
für die Luft- und Raumfahrt fest.

Série aérospatiale - Barres hexagonales, étirées en aluminium et alliages d'aluminium - Classe de tolérance h 11 - Surplats 7 mm < a < 50 mm - Dimensions

La présente norme spécifie les dimensions et les tolérances des :
Barres hexagonales, étirées
en aluminium et alliages d'aluminium
Classe de tolérance h 11
Surplats 7 mm < a < 50 mm
pour applications aérospatiales.

Aerospace series - Hexagonal bars, drawn in aluminium and aluminium alloys - Tolerance class h 11 - Width across flats 7 mm < a < 50 mm - Dimensions

General Information

Status
Published
Publication Date
04-Dec-2001
Withdrawal Date
29-Jun-2002
ICS
49.025.20 - Aluminium
Technical Committee
ASD-STAN - Aerospace
Drafting Committee
ASD-STAN/D 4 - Metallic
Current Stage
9093 - Decision to confirm - Review Enquiry
Start Date
01-Jun-2017
Completion Date
14-Apr-2025
Ref Project
SIST EN 2046:2004 - Aerospace series - Hexagonal bars, drawn in aluminium and aluminium alloys - Tolerance class h 11 - Width across flats 7 mm < a < 50 mm - Dimensions

Overview

EN 2046:2001 defines the dimensional and tolerance requirements for drawn hexagonal bars made of aluminium and aluminium alloys for aerospace applications. The standard covers bars with a width across flats (a) in the range 7 mm < a < 50 mm and specifies tolerance class h11. It is part of the aerospace series of metallic material standards and is intended to ensure consistent form, fit and interchangeability of semi-finished hexagonal sections used in the aerospace supply chain.

Key Topics

  • Scope and form: Dimensions and geometric form for drawn hexagonal bars intended for aerospace use, with reference to a standard form figure.
  • Tolerance class: Guidance and requirements are given for tolerance class h11 on width across flats.
  • Dimensional data: The standard provides recommended nominal widths and associated guidance on linear mass per metre and mass calculation basis (density reference given for information).
  • Length supply: Orders must specify whether bars are to be supplied in fixed lengths or random lengths; when random lengths are supplied, minimum and maximum length limits must be stated on the order.
  • Corner radii and edge form: Corner radii values are specified relative to width across flats to control section geometry and fit in assemblies.
  • Geometric tolerances and measurement methods: The document references standardised measurement methods for straightness, twist and surface flatness.

Applications

EN 2046:2001 is specifically tailored for the aerospace industry where precise geometry and repeatability are critical. Typical practical benefits include:

  • Interchangeability: Manufacturers and assemblers can expect consistent mating and assembly without additional machining.
  • Quality control: Clear dimensional and geometric tolerances support acceptance criteria and inspection routines.
  • Supply chain clarity: Defined requirements for lengths, corner radii and mass enable accurate ordering, costing and handling.

Common use cases include structural components, fittings and fastener stock where hexagonal aluminium sections are required to meet aerospace-grade tolerance and form expectations.

Related Standards

EN 2046:2001 references and works alongside other aerospace series standards to ensure consistent measurement and organization:

  • EN 3848 - Method of measuring form deviations (used for straightness, twist and flatness measurement procedures).
  • EN 4258 - General organisation of aerospace metallic material standards (explains series structure and cross-references).

Practical note: When specifying EN 2046 bars, include material designation, tolerance class (h11), the exact width across flats required (within 7–50 mm), and whether lengths should be fixed or random. Referencing the normative measurement methods (EN 3848) in inspection plans will streamline acceptance and verification activities.

Frequently Asked Questions

EN 2046:2001 is a standard published by the European Committee for Standardization (CEN). Its full title is "Aerospace series - Hexagonal bars, drawn in aluminium and aluminium alloys - Tolerance class h 11 - Width across flats 7 mm < a < 50 mm - Dimensions". This standard covers: This standard specifies the dimensions and tolerances of: Hexagonal bars, drawn in aluminium and aluminium alloys Tolerance class h 11 Width across flats 7 mm < a < 50 mm for aerospace applications.

This standard specifies the dimensions and tolerances of: Hexagonal bars, drawn in aluminium and aluminium alloys Tolerance class h 11 Width across flats 7 mm < a < 50 mm for aerospace applications.

EN 2046:2001 is classified under the following ICS (International Classification for Standards) categories: 49.025.20 - Aluminium. The ICS classification helps identify the subject area and facilitates finding related standards.

You can purchase EN 2046:2001 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 CEN standards.

Standards Content (Sample)


2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Hexagonal bars, drawn in aluminium and aluminium alloys - Tolerance class h 11 - Width across flats 7 mm < a < 50 mm - DimensionsLuft- und Raumfahrt - Sechskantstangen, gezogen aus Aluminium und Aluminiumlegierungen - Toleranzklasse h 11 - Schlüsselweite 7 mm < a < 50 mm - MaßeSérie aérospatiale - Barres hexagonales, étirées en aluminium et alliages d'aluminium - Classe de tolérance h 11 - Surplats 7 mm < a < 50 mm - DimensionsAerospace series - Hexagonal bars, drawn in aluminium and aluminium alloys - Tolerance class h 11 - Width across flats 7 mm < a < 50 mm - Dimensions49.025.20AluminijAluminiumICS:Ta slovenski standard je istoveten z:EN 2046:2001SIST EN 2046:2004en01-maj-2004SIST EN 2046:2004SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 2046December 2001ICS 49.025.20English versionAerospace series - Hexagonal bars, drawn in aluminium andaluminium alloys - Tolerance class h 11 - Width across flats 7mm
a
50 mm - DimensionsSérie aérospatiale - Barres hexagonales, étirées enaluminium et alliages d'aluminium - Classe de tolérance h11 - Surplats 7 mm
a
50 mm - DimensionsLuft- und Raumfahrt - Sechskantstangen, gezogen ausAluminium und Aluminiumlegierungen - Toleranzklasse h11 - Schlüsselweite 7 mm
a
50 mm - MaßeThis European Standard was approved by CEN on 2 May 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2046:2001 ESIST EN 2046:2004
...

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