ISO 6410-3:2021
(Main)Technical drawings - Screw threads and threaded parts - Part 3: Simplified representation
Technical drawings - Screw threads and threaded parts - Part 3: Simplified representation
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.
Dessins techniques — Filetages et pièces filetées — Partie 3: Représentation simplifiée
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.
General Information
Relations
Overview
ISO 6410-3:2021 is an international standard published by ISO that defines rules for the simplified representation of screw threads and threaded parts in technical drawings. This document applies specifically to cases where detailed depiction of thread geometry is unnecessary, such as in assembly drawings. It complements ISO 6410-1, which covers general conventions, and ISO 6410-2, which addresses screw thread inserts. The standard facilitates clear communication in technical product documentation by establishing universally recognized symbols and representations for threaded components.
Key Topics
- Simplified Representation Principles: The standard emphasizes showing only essential features of threaded parts to reduce complexity while preserving clarity. Details such as chamfer edges, thread run-outs, screw ends, and undercuts are omitted in simplified views.
- Screws and Nuts Symbols: ISO 6410-3 provides predefined simplified symbols for common screw heads (hexagon, square, cylinder, countersunk), drive types (slot, cross slot, hexagon socket), and nut types (hexagon, crown, square, wing). These symbols enable quick identification without excessive detail.
- Small Diameter Threads: Special provisions allow further simplification and dimensional indication for threads with diameters ≤ 6 mm or for repeated patterns of identical threaded holes. Dimensions must comply with ISO 6410-1 requirements. Leaders with arrows pinpoint the center-lines of holes for clarity.
- Visual Aids: The standard includes tables and figures demonstrating typical simplified representations to guide technical draughtsmen and engineers in applying consistent symbols across drawings.
- Scope of Use: The simplified representation is not intended for detailed manufacturing drawings but rather for assembly or higher-level documentation where full thread detail is unnecessary.
Applications
ISO 6410-3:2021 is highly relevant for:
- Mechanical Engineering Drawing: Assisting engineers and drafters in representing threaded components clearly while avoiding clutter, which streamlines the design and review process.
- Product Assembly Documentation: Used in assembly manuals and exploded views where thread details do not affect assembly instructions or fit checks.
- Standardized Communication: Ensures universal understanding of thread representations between manufacturers, designers, and quality assurance teams worldwide, minimizing misinterpretation and reducing errors.
- CAD and Technical Illustration: Facilitates the integration of standard symbols into CAD software templates and technical illustrations to maintain consistency across documentation.
- Educational Resources: Serves as a reference for training engineers and technicians on industry-standard representations of threaded parts.
Related Standards
- ISO 6410-1:1993 – Technical Drawings - Screw Threads and Threaded Parts - Part 1: General Conventions: Establishes basic rules and symbolic representations for threads. ISO 6410-3 builds on these to provide simplified forms.
- ISO 6410-2 – Technical Drawings - Screw Threads and Threaded Parts - Part 2: Screw Thread Inserts: Covers representation rules for threaded inserts, which are excluded from ISO 6410-3.
- ISO 129-1 – Technical Product Documentation - Presentation of Dimensions and Tolerances - Part 1: General Principles: Provides guidelines on dimensioning practices referenced for indicating small diameter threads in ISO 6410-3.
- ISO 225 – Fasteners - Bolts, Screws, Studs and Nuts - Symbols and Descriptions of Dimensions: Offers complementary symbols for fasteners useful alongside ISO 6410 series for comprehensive technical documentation.
Summary
ISO 6410-3:2021 delivers an essential framework for simplified drawings of screw threads and threaded parts, streamlining technical documentation without sacrificing clarity. Its widespread adoption promotes uniformity and accuracy in engineering communication and is indispensable for professionals involved in mechanical design, drafting, and assembly processes. Implementing this standard improves drafting efficiency and reduces the risk of misunderstandings across global manufacturing and engineering teams.
Frequently Asked Questions
ISO 6410-3:2021 is a standard published by the International Organization for Standardization (ISO). Its full title is "Technical drawings - Screw threads and threaded parts - Part 3: Simplified representation". 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.
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.
ISO 6410-3:2021 has the following relationships with other standards: It is inter standard links to ISO 6410-3:1993. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase 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 ISO standards.
Standards Content (Sample)
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 2021
© ISO 2021
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
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 . 2
Bibliography . 4
Foreword
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This document was prepared by Technical Committee ISO/TC 10, Technical product documentation,
Subcommittee SC 6, Mechanical engineering documentation, in collabor
...
NORME ISO
INTERNATIONALE 6410-3
Deuxième édition
2021-03
Dessins techniques — Filetages et
pièces filetées —
Partie 3:
Représentation simplifiée
Technical drawings — Screw threads and threaded parts —
Part 3: Simplified representation
Numéro de référence
©
ISO 2021
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2021
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii © ISO 2021 – Tous droits réservés
Sommaire Page
Avant-propos .iv
Introduction .v
1 Domaine d'application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Représentation simplifiée . 1
4.1 Généralité . 1
4.2 Vis et écrous . 2
4.3 Filetages de petit diamètre . 2
Bibliographie . 4
Avant-propos
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nationaux de normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est
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Le présent document a été élaboré par le comité technique ISO/TC 10, Documentation technique
de produits, sous-comité SC 6, Documentation sur l'ingénierie mécanique, en collaboration avec le
Comité Technique CEN/SS F01, Dessins techniques, du Comité Européen pour la Normalisation (CEN),
conformém
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