ISO INTERNATIONAL 8742 STANDARD Second edition 1997-11-01 Grooved pins One-third-length centre grooved Goupilles cannelées a cannelures centrales constantes sur le tiers de la longueur non debouchantes ISO Reference number ISO 8742:1997(E) ISO 8742:1997(E) Foreword IsO (the International Organization for Standardization) is a worldwide 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 (lEC)onallmattersofelectrotechnicalstandardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International a vote. International Standard ISO 8742 was prepared by Technical Committee ISO/TC 2, Fasteners. This second edition cancels and replaces the first edition (ISO 8742:1986), which has been technically revised. @ISO1997 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. InternationalOrganizationforStandardization Case postale 56 : CH-1211 Geneve 20 · Switzerland Internet [email protected] X.400 C=ch; a=400net; p=iso; 0=isocs; S=central Printed in Switzerland ii ISO 8742:1997(E) INTERNATIONAL STANDARD ISO Grooved pins One-third-length centre grooved 1 Scope This International Standard specifies the characteristics of one-third-length centre grooved pins made of steel or austenitic stainless steel which have three equally spaced grooves impressed longitudinally on their exteriorsurface,withnominaldiameter,d.,from1,5mmto25mminclusive. The displaced material to each side of the grooves forming an expanded diameter, d, which is larger than the equaltothenominaldiameterd, (seeclause 4). 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this InternationalStandard.Atthe time of publication,theeditions indicated were valid.All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEc and ISO maintain registers of currently valid International Standards. IsO 3269:1988, Fasteners -Acceptance inspection. Iso 3506-1:1997, Corrosion-resistant stainless steel fasteners - Part 1: Bolts, screws and studs. ISO 4042:-", Fasteners - Electroplated coatings. ISO 8749:1986, Pins and grooved pins - Shear test. Iso 9717:1990, Phosphate conversion coatings for metals - Method of specifying requirements. 3 Dimensions See figure 1 and table 1. 1) Chamfer permissible 2) The grooving angle 70° applies only to grooved pins made from steel as shown in clause 5. The grooving angle may be modified depending on resilience of material Figure 1 1) To be published. (Revision of ISO 4042:1989)