EN ISO 6410-3:2021
(Main)Technical drawings - Screw threads and threaded parts - Part 3: Simplified representation (ISO 6410-3:2021)
Technical drawings - Screw threads and threaded parts - Part 3: Simplified representation (ISO 6410-3:2021)
This document establishes rules for the simplified representation of threaded parts, with the exception of screw thread inserts, which are covered in ISO 6410-2. This representation is applicable when it is not necessary to show the exact shape and details of the parts (see ISO 6410-1), for example in assembly drawings.
Technische Zeichnungen - Gewinde und Gewindeteile - Teil 3: Vereinfachte Darstellung (ISO 6410-3:2021)
Dieses Dokument legt Regeln für die vereinfachte Darstellung von Gewindeteilen fest, mit Ausnahme von Gewindeeinsätzen, die in ISO 6410 2 beschrieben sind. Diese Darstellung ist anwendbar, wenn es nicht notwendig ist, die genaue Form und Einzelheiten der Teile darzustellen (siehe ISO 6410 1), z. B. in Zusammenbauzeichnungen.
Dessins techniques - Filetages et pièces filetées - Partie 3: Représentation simplifiée (ISO 6410-3:2021)
Le présent document établit des règles pour la représentation simplifiée des pièces filetées, à l'exception des inserts filetés qui font l'objet de l'ISO 6410-2. Cette représentation s'applique dans le cas où il n'est pas nécessaire de montrer la forme exacte et le détail des pièces (voir ISO 6410-1), par exemple dans les dessins d'assemblage.
Tehniške risbe - Navoji in deli z navojem - 3. del: Poenostavljeno prikazovanje (ISO 6410-3:2021)
General Information
Relations
Overview
EN ISO 6410-3:2021 - "Technical drawings - Screw threads and threaded parts - Part 3: Simplified representation" (CEN adoption of ISO 6410-3:2021) defines rules for the simplified graphical representation of screw threads and threaded parts on technical drawings. It applies when showing the exact thread geometry is unnecessary (for example, in assembly drawings). Screw thread inserts are excluded (see ISO 6410-2).
Key topics and requirements
- Scope and purpose
- Applies to drawings where only essential features are needed; reduces drawing complexity while preserving functional information.
- What not to show
- Edges of chamfers on nuts and heads
- Thread run-outs
- Shape of screw ends
- Undercuts
- Screws and nuts
- When head shape or drive pattern must be indicated, use the standardized simplified symbols/examples given in the standard (Table 1). Typical simplified designations include hexagon head, socket head, countersunk, pan/washer-head, set screws, nuts (hexagon, square, wing, crown), and common drive slots/cross-slots.
- A simplified representation of the opposite threaded end view is not required.
- Small-diameter threads
- Simplification or abbreviated indication is permissible when the drawn diameter is ≤ 6 mm or when a regular pattern of identical holes/threads exists.
- The designation must still include all features normally required by conventional representation and dimensioning (as specified in ISO 6410-1:1993, clause 4.3).
- Designation should be placed on a leader line pointing to the hole centre-line, terminating in an arrowhead (illustrated in Figures 1–4).
- Conformance notes
- The document aligns with ISO 129-1 for certain notation conventions and references ISO 6410-1 for general conventions.
Practical applications
- Use in assembly drawings and higher-level mechanical schematics where thread form detail is unnecessary.
- Saves CAD/drafting time and reduces visual clutter while keeping manufacturing-relevant information.
- Typical users: mechanical engineers, design drafters, CAD technicians, manufacturing engineers, technical product documentation specialists, and standards/quality teams responsible for drawing consistency.
Related standards
- ISO 6410-1:1993 - General conventions for screw threads and threaded parts
- ISO 6410-2 - Screw thread inserts (not covered here)
- ISO 129-1 - Presentation of dimensions and tolerances (notations)
- ISO 225 - Fastener symbols and descriptions
Using EN ISO 6410-3:2021 ensures consistent, economical representation of threaded components across mechanical engineering drawings and assembly documentation.
Frequently Asked Questions
EN ISO 6410-3:2021 is a standard published by the European Committee for Standardization (CEN). Its full title is "Technical drawings - Screw threads and threaded parts - Part 3: Simplified representation (ISO 6410-3:2021)". This standard covers: This document establishes rules for the simplified representation of threaded parts, with the exception of screw thread inserts, which are covered in ISO 6410-2. This representation is applicable when it is not necessary to show the exact shape and details of the parts (see ISO 6410-1), for example in assembly drawings.
This document establishes rules for the simplified representation of threaded parts, with the exception of screw thread inserts, which are covered in ISO 6410-2. This representation is applicable when it is not necessary to show the exact shape and details of the parts (see ISO 6410-1), for example in assembly drawings.
EN ISO 6410-3:2021 is classified under the following ICS (International Classification for Standards) categories: 01.100.20 - Mechanical engineering drawings; 21.040.01 - Screw threads in general. The ICS classification helps identify the subject area and facilitates finding related standards.
EN ISO 6410-3:2021 has the following relationships with other standards: It is inter standard links to EN ISO 6410-3:1996. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN ISO 6410-3:2021 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)
SLOVENSKI STANDARD
01-junij-2021
Nadomešča:
SIST EN ISO 6410-3:2001
Tehniške risbe - Navoji in deli z navojem - 3. del: Poenostavljeno prikazovanje (ISO
6410-3:2021)
Technical drawings - Screw threads and threaded parts - Part 3: Simplified
representation (ISO 6410-3:2021)
Technische Zeichnungen - Gewinde und Gewindeteile - Teil 3: Vereinfachte Darstellung
(ISO 6410-3:2021)
Dessins techniques - Filetages et pièces filetées - Partie 3: Représentation simplifiée
(ISO 6410-3:2021)
Ta slovenski standard je istoveten z: EN ISO 6410-3:2021
ICS:
01.100.20 Konstrukcijske risbe Mechanical engineering
drawings
21.040.01 Navoji na splošno Screw threads in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 6410-3
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2021
EUROPÄISCHE NORM
ICS 01.100.20; 21.040.01 Supersedes EN ISO 6410-3:1996
English Version
Technical drawings - Screw threads and threaded parts -
Part 3: Simplified representation (ISO 6410-3:2021)
Dessins techniques - Filetages et pièces filetées - Partie Technische Zeichnungen - Gewinde und Gewindeteile -
3: Représentation simplifiée (ISO 6410-3:2021) Teil 3: Vereinfachte Darstellung (ISO 6410-3:2021)
This European Standard was approved by CEN on 11 March 2021.
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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6410-3:2021 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 6410-3:2021) 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 October 2021, and conflicting national standards shall
be withdrawn at the latest by October 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 6410-3:1996.
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, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 6410-3:2021 has been approved by CEN as EN ISO 6410-3:2021 without any
modification.
INTERNATIONAL ISO
STANDARD 6410-3
Second edition
2021-03
Technical drawings — Screw threads
and threaded parts —
Part 3:
Simplified representation
Dessins techniques — Filetages et pièces filetées —
Partie 3: Représentation simplifiée
Reference number
ISO 6410-3:2021(E)
©
ISO 2021
ISO 6410-3:2021(E)
© ISO 2021
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ii © ISO 2021 – All rights reserved
ISO 6410-3:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Simplified representation . 1
4.1 General . 1
4.2 Screws and nuts . 1
4.3 Small diameter threads .
...
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