EN ISO 1660:2017

SLOVENSKI STANDARD
01-april-2017
1DGRPHãþD
SIST EN ISO 1660:2000
6SHFLILNDFLMDJHRPHWULMVNLKYHOLþLQL]GHOND*367ROHULUDQMHJHRPHWULMVNLKYHOLþLQ
7ROHULUDQMHSURILORY,62
Geometrical product specifications (GPS) - Geometrical tolerancing - Profile tolerancing
(ISO 1660:2017)
Geometrische Produktspezifikation (GPS) - Geometrische Tolerierung - Profiltolerierung
(ISO 1660:2017)
Spécification géométrique des produits (GPS) - Tolérancement géométrique -
Tolérancement des profils (ISO 1660:2017)
Ta slovenski standard je istoveten z: EN ISO 1660:2017
ICS:
01.100.01 7HKQLþQRULVDQMHQDVSORãQR Technical drawings in
general
17.040.10 Tolerance in ujemi Limits and fits
17.040.40 6SHFLILNDFLMDJHRPHWULMVNLK Geometrical Product
YHOLþLQL]GHOND*36 Specification (GPS)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 1660
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2017
EUROPÄISCHE NORM
ICS 01.100.01; 17.040.40 Supersedes EN ISO 1660:1995
English Version
Geometrical product specifications (GPS) - Geometrical
tolerancing - Profile tolerancing (ISO 1660:2017)
Spécification géométrique des produits (GPS) - Geometrische Produktspezifikation (GPS) -
Tolérancement géométrique - Tolérancement des Geometrische Tolerierung - Profiltolerierung (ISO
profils (ISO 1660:2017) 1660:2017)
This European Standard was approved by CEN on 14 December 2016.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1660:2017 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 1660:2017) has been prepared by Technical Committee ISO/TC 213
“Dimensional and geometrical product specifications and verification” in collaboration with Technical
Committee CEN/TC 290 “Dimensional and geometrical product specification and verification” the
secretariat of which is held by AFNOR.
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 August 2017 and conflicting national standards shall
be withdrawn at the latest by August 2017.
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 1660:1995.
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, Former Yugoslav Republic of Macedonia, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
the United Kingdom.
Endorsement notice
The text of ISO 1660:2017 has been approved by CEN as EN ISO 1660:2017 without any modification.
INTERNATIONAL ISO
STANDARD 1660
Third edition
2017-02
Geometrical product specifications
(GPS) — Geometrical tolerancing —
Profile tolerancing
Spécification géométrique des produits (GPS) — Tolérancement
géométrique — Tolérancement des profils
Reference number
ISO 1660:2017(E)
©
ISO 2017
ISO 1660:2017(E)
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
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CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved

ISO 1660:2017(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
5 Rules for profile tolerancing . 3
5.1 General . 3
5.2 Default rules for profile tolerancing . 4
5.2.1 Rule A: Definition of the theoretically exact feature (TEF) . 4
5.2.2 Rule B: Type of toleranced feature . 5
5.2.3 Rule C: Definition of the tolerance zone . 5
5.3 Rules for profile tolerancing using additional specification elements . 7
5.3.1 Rule D: Toleranced feature specification elements . 7
5.3.2 Rule E: Unequally disposed tolerance zone . 8
5.3.3 Rule F: Linear tolerance zone offset . 8
5.3.4 Rule G: Angular tolerance zone offset . 8
5.3.5 Rule H: Variable tolerance zone width . 8
5.3.6 Rule I: Filtered feature specification elements . 8
5.3.7 Rule J: Association and parameter specification elements . 9
5.3.8 Rule K: Associated toleranced feature specification elements . . 9
5.3.9 Rule L: Non-rigid part . 9
Annex A (informative) Compound features .10
Annex B (informative) Illustration of the rules .12
Annex C (informative) Former practices .42
Annex D (informative) Relation to the GPS matrix model .44
Bibliography .45
ISO 1660:2017(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
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 identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment,
as well as information about ISO’s adherence to the World Trade Organization (WTO) principles in the
Technical Barriers to Trade (TBT) see the following URL: www . i so .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 213, Dimensional and geometrical product
specifications and verification.
This third edition cancels and replaces the second edition (ISO 1660:1987), which has been technically
revised with the following changes:
— the requirements for defining the theoretically exact feature (the nominal geometry) have been
made more explicit;
— the definition of what constitutes the toleranced feature has been clarified and updated to follow
the feature principle, (see ISO 8015:2011, 5.5);
— tools for defining specifications for restricted features and compound features have been added;
— tools for defining specifications using unequally disposed or offset tolerance zones have been added;
— tools for defining specifications using tolerance zone of variable width have been added.
iv © ISO 2017 – All rights reserved

ISO 1660:2017(E)
Introduction
This document is a geometrical product specification (GPS) standard and is to be regarded as a general
GPS standard (see ISO 14638). It influences the chain links A, B and C of the chains of standards on
form, orientation and location.
The ISO GPS Masterplan given in ISO 14638 gives an overview of the ISO GPS system of which this
document is a part. The fundamental rules of ISO GPS given in ISO 8015 apply to this document and
the default decision rules given in ISO 14253-1 apply to specifications made in accordance with this
document, unless otherwise indicated.
For more detailed information of the relation of this document to the GPS matrix model, see Annex D.
This document provides rules for profile tolerancing.
For the presentation of lettering (proportions and dimensions), see ISO 3098-2.
All figures in this document for the 2D drawing indications have
...