ISO 10669:1999

Plain washers for tapping screw and washer assemblies - Normal and large series - Product grade A

Rondelles plates pour vis à tôle à rondelle incorporée — Séries normale et large — Grade A

La présente Norme internationale spécifie les caractéristiques des rondelles plates en acier, de grade A, pour vis à tôle à rondelle plate incorporée conformes à l'ISO 10510.

General Information

• Status: Published
• Publication Date: 18-Aug-1999
• ICS: 21.060.30 - Washers, locking elements
• Technical Committee: ISO/TC 2 - Fasteners
• Drafting Committee: ISO/TC 2/WG 13 - Washer and non-threaded fasteners
• Current Stage: 9093 - International Standard confirmed
• Start Date: 10-Jul-2024
• Completion Date: 13-Dec-2025

Relations

• Consolidates: ISO 3157:1975 - Radioluminescence for time measurement instruments - Specifications
• Effective Date: 06-Jun-2022

Overview

ISO 10669:1999 defines the characteristics of plain steel washers of product grade A used in tapping screw and washer assemblies (per ISO 10510). Published by ISO and prepared by Technical Committee ISO/TC 2 (Fasteners), the standard covers both normal (Type N) and large (Type L) series, and is intended to ensure consistent dimensions, material properties and workmanship for industrial supply and interchangeability.

Key Topics

• Classification: Two types are specified:

  • Type N - Normal series
  • Type L - Large series

• Dimensions: Nominal thread sizes covered include washers for tapping screws with diameters from approximately 2.2 mm up to 9.5 mm. The standard provides clearance hole, outside diameter and thickness limits for each nominal size (see standard tables).

• Material and chemical limits: Washers are made of steel; the carbon content shall not exceed 0.12% unless otherwise agreed.

• Hardness and mechanical properties: A specified hardness class of 180 HV applies; the broader acceptable hardness range in the as-delivered condition is 180 HV to 300 HV. Hardness tests are to be performed according to ISO 6507-1 (Vickers method) with test forces dependent on nominal thickness.

• Tolerances and product grade: Dimensional tolerances are referenced to ISO 4759-3 for plain washers (product grades A and C). Note that product grade A does not apply to the tolerance of the clearance hole and thickness for these washers.

• Surface finish and coatings: Washers are supplied in a plain (natural) finish, possibly treated with a protective lubricant or coated as agreed between customer and supplier. Electroplating requirements are covered by ISO 4042. All tolerances refer to measurements prior to plating or coating.

• Workmanship and acceptance: Parts must be free of detrimental defects and protruding burrs. Acceptance inspection procedures follow ISO 3269.

• Designation example: Washer ISO 10669 - N - 4,2 - 180 HV

Applications

Plain washers specified by ISO 10669:1999 are used where tapping screws are paired with a washer to:

• Provide consistent bearing area and load distribution
• Maintain assembly reliability in sheet metal and thin-material fastening
• Support procurement specifications and quality control for fastener suppliers
• Facilitate interchangeability across manufacturers in industrial assembly

Typical users include fastener manufacturers, OEMs, procurement teams and quality laboratories that perform incoming inspection and hardness testing.

Related Standards

• ISO 10510 - Tapping screw and washer assemblies with plain washers
• ISO 4759-3 - Tolerances for plain washers (product grades)
• ISO 3269 - Fasteners - Acceptance inspection
• ISO 4042 - Fasteners - Electroplated coatings
• ISO 6507-1 - Vickers hardness test - Test method

For definitive dimensions, tables and procedural requirements consult the full ISO 10669:1999 document and the referenced ISO standards.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 10669
First edition
1999-08-01
Plain washers for tapping screw and washer
assemblies — Normal and large series —
Product grade A
Rondelles plates pour vis à tôle à rondelle incorporée — Séries normale
et large — Grade A
A
Reference number
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 3.
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.
International Standard ISO 10669 was prepared by Technical Committee ISO/TC 2, Fasteners.
©  ISO 1999
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet [e-mail]
Printed in Switzerland
ii
INTERNATIONAL STANDARD  © ISO ISO 10669:1999(E)
Plain washers for tapping screw and washer assemblies —
Normal and large series — Product grade A
1 Scope
This International Standard specifies the characteristics of plain steel washers of product grade A for tapping screw
and washer assemblies in accordance with ISO 10510.
Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC
maintain registers of currently valid International Standards.
1)
ISO 3269:— , Fasteners — Acceptance inspection.
ISO 4042:1999, Fasteners — Electroplated coatings.
2)
ISO 4759-3:— , Tolerances for fasteners — Part 3: Plain washers for bolts, screws and nuts — Product grades A
and C.
ISO 6507-1:1997, Metallic materials — Vickers hardness test — Part 1: Test method.
ISO 10510:1999, Tapping screw and washer assemblies with plain washers.
...

NORME ISO
INTERNATIONALE 10669
Première édition
1999-08-01
Rondelles plates pour vis à tôle à rondelle
incorporée — Séries normale et large —
Grade A
Plain washers for tapping screw and washer assemblies — Normal and
large series — Product grade A
A
Numéro de référence
Avant-propos
L'ISO (Organisation internationale de normalisation) est une fédération mondiale d'organismes nationaux de
normalisation (comités membres de l'ISO). L'élaboration des Normes internationales est en général confiée aux
comités techniques de l'ISO. Chaque comité membre intéressé par une étude a le droit de faire partie du comité
technique créé à cet effet. Les organisations internationales, gouvernementales et non gouvernementales, en
liaison avec l'ISO, participent également aux travaux. L'ISO collabore étroitement avec la Commission
électrotechnique internationale (CEI) en ce qui concerne la normalisation électrotechnique.
Les Normes internationales sont rédigées conformément aux règles données dans les Directives ISO/CEI, Partie 3.
Les projets de Normes internationales adoptés par les comités techniques sont soumis aux comités membres pour
vote. Leur publication comme Normes internationales requiert l'approbation de 75 % au moins des comités
membres votants.
La Norme internationale ISO 10669 a été élaborée par le comité technique ISO/TC 2, Éléments de fixation.
©  ISO 1999
Droits de reproduction réservés. Sauf prescription différente, 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 et les microfilms, sans l'accord écrit de l'éditeur.
Organisation internationale de normalisation
Case postale 56 • CH-1211 Genève 20 • Suisse
Internet [e-mail]
Imprimé en Suisse
ii
NORME INTERNATIONALE  © ISO ISO 10669:1999(F)
Rondelles plates pour vis à tôle à rondelle incorporée —
Séries normale et large — Grade A
1 Domaine d’application
La présente Norme internationale spécifie les caractéristiques des rondelles plates en acier, de grade A, pour vis à
tôle à rondelle plate incorporée conformes à l'ISO 10510.
2 Références normatives
Les documents normatifs suivants contiennent des dispositions qui, par suite de la référence qui en est faite,
constituent des dispositions valables pour la présente Norme internationale. Pour les références datées, les
amendements ultérieurs ou les révisions de ces publications ne s’appliquent pas. Toutefois, les parties prenantes
aux accords fondés sur la présente Norme internationale sont invitées à rechercher la possibilité d'appliquer les
éditions les plus récentes des documents normatifs indiqués ci-après. Pour les références non datées, la dernière
édition du document normatif en référence s’applique. Les membres de la CEI et de l'ISO possèdent le registre des
Normes internationales en vigueur à un moment donné.
1)
ISO 3269:— , Éléments de fixation — Contrôle de réception.
ISO 4042:1999, Éléments de fixation — Revêtements électrolytiques.
2)
ISO 4759-3:— , Tolérances pour éléments de fixation — Partie 3: Rondelles plates pour vis et écrous — Grades A
et C.
ISO 6507-1:1997, Matériaux métalliques — Essai de dureté Vickers — Partie 1: Méthode d'essai.
ISO 10510:1999, Vis à tôle à rondelle plate incorporée.

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À publier. (Rév
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