SIST EN ISO 6433:2012
(Main)Technical product documentation - Part references (ISO 6433:2012)
Technical product documentation - Part references (ISO 6433:2012)
This International Standard gives rules for the presentation of part references in assembly representations,
e.g. on assembly drawings, in order to identify the constituent parts in a related parts list.
Technische Zeichnungen - Positionsnummern (ISO 6433:2012)
Diese Internationale Norm definiert Regeln für die Angabe von Bauteil Positionsnummern in Zusammen-baudarstellungen, beispielsweise in Zusammenbauzeichnungen, damit die einzelnen Bauteile in einer zuge-hörigen Stückliste identifiziert werden können.
Documentation technique de produits - Références de pièce (ISO 6433:2012)
La présente Norme internationale fournit des règles de représentation des références de pièce dans des
représentations d'ensemble, par exemple sur des dessins représentant des ensembles, afin d'identifier les
éléments constitutifs dans une nomenclature de composants associée.
Tehnične risbe - Pozicioniranje delov (ISO 6433:2012)
Ta mednarodni standard določa pravila za prikaz pozicioniranja delov v prikazih sestave, npr. pri risbah sestave, da se določijo sestavni deli na zadevnem seznamu delov.
General Information
Relations
Overview
EN ISO 6433:2012 - Technical product documentation - Part references specifies rules for presenting part references (position numbers) on assembly representations such as assembly drawings and exploded views. Its purpose is to ensure clear, unambiguous identification of constituent parts in the related parts list (parts list / BOM). This harmonized CEN/ISO standard aligns drawing conventions across design, manufacturing and documentation teams.
Key topics and requirements
- Scope and purpose: Defines how part references are shown on assembly drawings to link each part to a parts list (see ISO 7573).
- Identifiers: Preferably use numerals only; capital letters may augment if necessary. Recommended maximum of three characters for part reference numbers. Characters must comply with ISO 3098-0 lettering.
- Appearance: All references on a drawing must be uniform in type and height and be clearly distinguishable from other annotations. Typical methods include:
- Encircling the part reference with a continuous narrow line (ISO 128 line type 01.1).
- Using larger character height (for example, larger than dimension text).
- Location and leader lines: Part references must be placed outside part outlines and connected to the part by a leader line that complies with ISO 128-22. Leader lines should not intersect and should be short and angled for clarity.
- Identical parts: Identical components should carry the same part reference and need only be indicated once on the drawing unless ambiguity requires repetition (see Annex A).
- Positioning: Arrange part references in horizontal rows and/or vertical columns where possible to maintain legibility; multiple references sharing a leader line may be grouped.
- Numbering sequence: Adopt a clear numbering sequence (e.g., assembly order, component importance, or another logical order).
- Annex A: Rules for indicating number of parts (use of “×” in line with ISO 129-1) and repeating encircled references when required.
Applications and users
EN ISO 6433:2012 is used by:
- Mechanical designers, CAD technicians and draughtsmen preparing assembly drawings
- Technical illustrators and documentation specialists creating exploded views and manuals
- Manufacturing, procurement and maintenance teams that rely on accurate parts lists (BOMs)
- Quality assurance and standardization teams implementing drawing conventions
Practical benefits include improved clarity of assembly documentation, reduced errors in parts ordering and manufacturing, and consistent cross-team communication.
Related standards
Normative references that should be used alongside EN ISO 6433:2012:
- ISO 128‑22, ISO 128‑23, ISO 128‑24, ISO 128‑25 (leader and line conventions)
- ISO 129‑1 (dimensioning - use of “×” for quantity)
- ISO 3098‑0 (lettering)
- ISO 7573 (parts lists / BOM)
Keywords: EN ISO 6433:2012, part references, assembly drawings, technical product documentation, parts list, leader lines, ISO 6433.
Frequently Asked Questions
SIST EN ISO 6433:2012 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Technical product documentation - Part references (ISO 6433:2012)". This standard covers: This International Standard gives rules for the presentation of part references in assembly representations, e.g. on assembly drawings, in order to identify the constituent parts in a related parts list.
This International Standard gives rules for the presentation of part references in assembly representations, e.g. on assembly drawings, in order to identify the constituent parts in a related parts list.
SIST EN ISO 6433:2012 is classified under the following ICS (International Classification for Standards) categories: 01.100.01 - Technical drawings in general. The ICS classification helps identify the subject area and facilitates finding related standards.
SIST EN ISO 6433:2012 has the following relationships with other standards: It is inter standard links to SIST EN ISO 6433:1998. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase SIST EN ISO 6433:2012 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 SIST standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2012
1DGRPHãþD
SIST EN ISO 6433:1998
7HKQLþQHULVEH3R]LFLRQLUDQMHGHORY ,62
Technical product documentation - Part references (ISO 6433:2012)
Technische Zeichnungen - Positionsnummern (ISO 6433:2012)
Documentation technique de produits - Références de pièce (ISO 6433:2012)
Ta slovenski standard je istoveten z: EN ISO 6433:2012
ICS:
01.100.01 7HKQLþQRULVDQMHQDVSORãQR Technical drawings in
general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 6433
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2012
ICS 01.110 Supersedes EN ISO 6433:1994
English Version
Technical product documentation - Part references (ISO
6433:2012)
Documentation technique de produits - Références de Technische Zeichnungen - Positionsnummern (ISO
pièce (ISO 6433:2012) 6433:2012)
This European Standard was approved by CEN on 10 May 2012.
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, 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
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6433:2012: E
worldwide for CEN national Members.
Contents Page
Foreword .3
Foreword
This document (EN ISO 6433:2012) has been prepared by Technical Committee ISO/TC 10 "Technical
product documentation" in collaboration with CCMC.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by November 2012, and conflicting national standards shall be withdrawn
at the latest by November 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 6433:1994.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, 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, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 6433:2012 has been approved by CEN as a EN ISO 6433:2012 without any modification.
INTERNATIONAL ISO
STANDARD 6433
Second edition
2012-05-15
Technical product
documentation — Part references
Documentation technique de produits — Références de pièce
Reference number
ISO 6433:2012(E)
©
ISO 2012
ISO 6433:2012(E)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
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ii © ISO 2012 – All rights reserved
ISO 6433:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for
...
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