ISO INTERNATIONAL STANDARD 15786 First edition 2008-10-01 Technical drawings Simplified representation and dimensioning of holes Dessins techniques - Représentation et cotation simplifiées des trous Reference number ISO 15786:2008(E) @ ISO 2008 by IHS under lic itted without license from IHS Not for Resale ISO15786:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below COPYRIGHTPROTECTEDDOCUMENT @ ISO2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISo 2008 - All rights reserved ed without license from IHS Not for Resale ISO 15786:2008(E) Contents Page Foreword Introductior 1 Scope 2 Normative references 3 Terms and definitions 4 Methods of representation and dimensioning of holes.. 4.1 Complete representation and complete dimensioning of holes. 4.2 Complete representation and simplified dimensioning of holes. 4.3 Simplified representation and simplified dimensioning of holes. 4.4 Representation of holes on the same drawing .... 5 Structureof dimensioningofholes. 5.1 Structure and sequence of descriptive elements for simplified dimensioning of holes . 5.2 Graphicalsymbols.. 5.3 Number of groups of holes and number of holes in a group. 5.4 Indication of tolerances.... 5.5 Hole bottom.. 5.6 Countersinksandchamfers 5.7 Depth dimensions. 5.8 Indication of surface texture.. 0 5.9 Indication of dimensions on geometrical tolerances. 12 Annex A (informative) Examples for representation and dimensioning of holes, counterbores and internal threads ... Bibliography CopyrightInternatinal Oorganizain for standardizalion ghts reserved ii THS und nse from IHS Not for Res: