ISO INTERNATIONAL STANDARD 9974-2 First edition 1996-04-15 Connections for general use and fluid power Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing - Part 2: Stud ends with elastomeric sealing (type E) Raccordements pour applications generales et transmissions hydrauliques etpneumatiques- -Orifices etélements males a filetage /SO 261 et joint en élastomere ou étancheite metal sur metal - Partie 2: Elements males avec joint en élastomere (type E) ISO Reference number ISO 9974-2:1996(E) No reproduction or networking permited without license from IHS Not for Resale ISO 9974-2:1996(E) Foreword ISO (the International Organization for Standardization) is a worldwide fed- eration of national standards bodies (lsO 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 rep- resented on that committee. International organizations, governmental-and non-governmental, in liaison with IsO, also take part in the work. IsO col- laborates closely with the International Eiectrotechnical Commission (lEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are cir- culated 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 9974-2 was prepared jointly by Technical Committees ISO/TC 5, Ferrous metal pipes and metallic fittings, Sub- committee sc 5, Threaded or plain end butt-welding fittings, threads, gauging of threads, and ISO/TC 131, Fiuid power systems, Subcommittee SC 4, Connectors and similar products and components. ISO 9974 consists of the foliowing parts, under the general title Connec- tions for general use and fluid power- - Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing. Part 1: Threaded ports Part 2: Stud ends with elastomeric sealing (type E) Part 3: Stud ends with metal-to-metal sealing (type B) The performance requirements, dimensions and designs are defined for port and stud end connections for the L and S series in ISO 9974-2 and for the LL, L and S series in ISO 9974-3. Significant testing over more than 30 years of use has confirmed the performance requirements of these port and stud end connections. Stud ends conforming to ISO 9974-2 and 9974-3 are identical to those conforming to DIN 3852-1. ISO 9974-2 stud ends are used on ISO 8434-1 and ISO 8434-4 fittings, and ISO 9974-3 stud ends are used on ISO 8434-1 fittings. Annex A forms an integral part of this part of ISO 9974. Annex B is for information only. ISO1996 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 Geneve 20 · Switzerland Printed in Switzerland i No reproduction or networking permitted without license from IHS Not for Resale @ISO ISO9974-2:1996(E) Introduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within an enclosed circuit. In general appli- cations, a fluid may be conveyed under pressure. fluid conductor fittings to tubes and pipes or to hose fittings and hoses. ili CopyrightIntmationalOrganizatiforStandardzation No reproduction or networking permited without icense from IHS Not for Resale