ISO 2768-2:1989 - Part 2 - Geometrical tolerances for features without individual tolerance indications

Oct 28, 2026

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ISO 2768-2:1989 defines general geometrical tolerances for features shown on technical drawings that have no individual tolerance indications. It is intended to simplify drawing indications by providing limits for deviations of size and geometrical characteristics such as form, orientation, and location. The standard specifies tolerances in three tolerance classes, applies mainly to features produced by material removal, and discusses how to select the appropriate class based on customary workshop accuracy. It also clarifies scope exclusions and references related drawing and tolerancing standards.

LanguageEnglish

CategoryResearch & Report

FormatPDF

Pages9

Reading Time23 min

AccessFree to download

Introduction

Part 2: Geometrical tolerances for features without individual tolerance indications

1 Scope

2 General

3 Normative references

First edition 1989-11-15 General tolerances一 Part 2: Geometrical tolerances for features without individualiTeh Stolerance indicationsEVIEW (standards.iteh.ai) Tolérances générales一 :1989 Partie 2:Tolérances geométriques pour céléments non affectés de tolérancesindividuelles https:/standard Foreword ISO (the International Organization for Standardization)is a worldwide federation ofnational standards bodies (ISO member bodies).The work of preparing InternationalStandards is normally carried out through ISO technical committes.Each memberbody interested in a subject for which a technical committee has been established hasthe right to be represented on that committee.International organizations,govern-mental and non-governmental,in liaison with ISO,also take part in the work.ISOcollaborates closely with the International Electrotechnical Commission(IEC)on allmatters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated tothe member bodies for approval before their acceptance as International Standards bythe ISO Council.They are approved in accordance with ISO procedures requiring atVIleast 75%approval by the member bodies voting. International Standard ISO 2768-2 was prepared by Technical Committee ISO/TC 3,Limits and fits. .teh ai/catabg/standards/sist/7d43708d-10cd-41d3- This first edition of ISO 2768-2,together with iSO 2768-1661989,cancel and replaceISO 2768:1973. ISO 2768 consists of the following parts,under the general title General tolerances: 一Part 1:Tolerances for linear and angular dimensions without individualtolerance indications 一Part 2:Geometrical tolerances for features without individual tolerance indi-cations Annexes A and B of this part of ISO 2768 are for information only. ⑥ISO 1989 All ights reserved.No partof this publication may be reproduced orutlized in any form or by anymeans,electronic or mechanical,including photocopying and microfilm,without permission inwriting from the publisher. International Organization for Standardization Case postale 56·CH-1211 Genève 20SwitzerlandPrinted in Switzerland # Introduction All features on component parts always have a size and a geometrical shape.For thedeviation of size and for the deviations of the geometrical characteristics(form,orientation and location)the function of the part requires limitations which,whenexceeded,impair this function. The tolerancing on the drawing should be complete to ensure that the elements of sizeand geometry of allfeatures are controlled,i.e.nothing shall be implied or left to judge-ment in the workshop or in the inspection department. The use of general tolerances for size and geometry simplifies the task of ensuring thatthis prerequisite is met. iTeh STANDARD PREVIEW(standards.iteh.ai) ISO 2768-2:1989 https//standards.itehai/catalbglstandards/sist/7d43708d-10cd-41d3- 8133-d6b60c1dbdbb/iso-2768-2-1989 iTeh This page intentionally left blankEVEW(standards.iteh.ai) ISO 2768-2:1989 https://standards.itehai/catabglstandards/sist/7d43708d-10cd-41d3- 8133-d6b60cldbdbb/iso-2768-2-1989 General tolerances一 # Part 2: Geometrical tolerances for features without individualtolerance indications ## 1 Scope This part of ISO 2768 is intended to simplify drawing indica-tions and specifies general gcometrical tolerances to controlthose features on the drawing which have no respective in-dividual indication.It specifies general geometrical tolerances inthree tolerance classes.iTeh STANDAR This part of ISO 2768 mainly applies to features which are prqc it」_」 L. l l lto n lioti to f0atuuro duced by removal of material.Its application to featuresmanufactured by other processes is possible;however,specialexaminationsequiredto ascertainwhetherthecustomary2:198workshop accuracy lies within the general geometrical tolerards/sances specified in this part of ISO 2768.

FAQs

What is ISO 2768-2:1989 intended to do?

It simplifies drawing indications and specifies general geometrical tolerances to control features on drawings that do not have corresponding individual tolerance indications.

How are the general geometrical tolerances organized in this standard?

They are provided in three tolerance classes, and selection should consider the respective customary workshop accuracy.

When does ISO 2768-2:1989 apply and what is excluded?

It mainly applies to features produced by removal of material, and general tolerances apply to geometrical tolerance characteristics except for items such as cylindricity, profile of any line/surface, angularity, coaxiality, positional tolerances, and total run-out.

Oct 28, 2026

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