1、BRITISH STANDARD BSEN 28749:1992 ISO8749:1986 Pins and grooved pins Shear test The European Standard EN28749:1992 has the status of a BritishStandard UDC 621.886.1:620.176BSEN28749:1992 This British Standard, having been prepared under the directionof the General Mechanical Engineering Standards Pol
2、icy Committee, waspublished under the authorityof the Standards Boardand comes intoeffecton 15November1992 BSI12-1999 The following BSI references relate to the work on this standard: Committee reference GME/9 Special announcement in BSINews October1992 ISBN 0 580 21336 6 Cooperating organizations T
3、he European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standardiseringsra
4、ad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National Standards Authority of Ireland Italy Ente Nazionale Italia
5、no di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiseringskommissionen i Sverige Switzerla
6、nd Association suisse de normalisation United Kingdom BritishStandards Institution Amendments issued since publication Amd. No. Date CommentsBSEN28749:1992 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Foreword 2 Text of EN28749 3 National annex NA (in
7、formative) Committees responsible Inside back coverBSEN28749:1992 ii BSI 12-1999 National foreword This BritishStandard has been prepared under the direction of the GeneralMechanical Engineering Standards Policy Committee. It is identicalwith ISO8749:1986 Pins and grooved pins Shear test, published
8、bythe International Organization for Standardization (ISO). It supersedesBS7054:1989, which is withdrawn. In1992 the European Committee for Standardization (CEN) acceptedISO8749:1986 as European Standard EN28749:1992. As a consequence of implementing the European Standard BS7054 is renumbered asBS E
9、N28749:1992. This edition makes no technical changes to the standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immu
10、nity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be in
11、dicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN28749:1992 July1992 UDC 621.886.1:620.176 Descriptors: Fasteners, grooved pins, spring pins, shear tests, test equipment English version Pins and grooved pins Shear test (ISO8749:1986) Goupil
12、les et goupilles canneles Essai de cisaillement (ISO8749:1986) Stifte und Kerbstifte Scherprfung (ISO8749:1986) This European Standard was approved by CEN on1992-07-17. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European S
13、tandard 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 Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, Fren
14、ch, 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, F
15、rance, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels
16、 1992 Copyright reserved to CEN members Ref. No. EN28749:1992 EEN28749:1992 BSI 12-1999 2 Foreword In1992, CEN Technical Committee CEN/TC185 “Threaded and non threaded mechanical fasteners and accessories” the secretariat of which is held by DIN decided to submit the International Standard ISO8749:1
17、986 “Pins and grooved pins Shear test” to the formal vote procedure. The result was positive. In the countries bound to implement this European Standard a national standard identical to this European Standard shall be published at the latest by1993-01-31 and conflicting national standards shall be w
18、ithdrawn at the latest by1993-01-31. According to the CEN/CENELEC Common Rules the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Spain, Portugal, Sweden, Switze
19、rland and UnitedKingdom. Contents Page Foreword 2 1 Scope and field of application 3 2 Principle 3 3 Test equipment and method 3 Figure Typical pin shear test fixture 3EN28749:1992 BSI 12-1999 3 1 Scope and field of application This International Standard specifies the test method for shear testing
20、of metallic pins with nominal diameters from0,8 to25mm inclusive. 2 Principle The test consists of subjecting a pin to a double shear load using a suitable test fixture in a testing machine and recording the maximum load to fracture. 3 Test equipment and method The shear test is performed in a fixtu
21、re (a typical fixture is shown in the Figure) in which the pin support members and the member for applying the load have holes with diameters conforming to the nominal pin size (tolerance H6) and a hardness of not less than700HV. The clearance between the supporting member and the load member shall
22、not exceed0,15mm. The shear planes shall be at least one pin diameter away from each end and at least two diameters apart. Pins too short to be tested by double shear shall be tested by shearing two pins simultaneously in a single shear. Spring pins shall be mounted in the test fixture with the slot
23、 upwards. Pins shall be tested to fracture. The maximum load applied to the pin coincident with or prior to pin fracture shall be regarded as the double shear strength of the pin. Pins tested for shear strength shall show a ductile shear without longitudinal cracks. The speed of testing shall not ex
24、ceed13mm/min. Figure Typical pin shear test fixture4 blankBSEN28749:1992 BSI 12-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the preparation of this European Standard was entrusted by the General Mechanical Engineering Standards Policy Committee (GM
25、E/-) to Technical Committee GME/9, upon which the following bodies were represented: BEAMA Ltd. British Constructional Steelwork Association Ltd. British Industrial Fasteners Federation British Railways Board British Steel Industry (Wire Section) Gauge and Tool Makers Association Ministry of Defence
26、 Society of Motor Manufacturers and Traders Limited Washer Manufacturers Association of Great Britain The following bodies were also represented in the drafting of the standard, through subcommittees and panels: Defence Manufacturers Association General, Municipal, Boilermakers and Allied Trades Uni
27、on Institution of Production Engineers Screw Thread Tool Manufacturers Association Society of British Aerospace Companies Limited Society of British Gas IndustriesBS EN 28749:1992 ISO8749:1986 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national bod
28、y responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest a
29、mendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this BritishStandard would inform the Secretary of the technical committee responsible, the identity of which can be
30、 found on the inside front cover. Tel:02089969000. Fax:02089967400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publicatio
31、ns should be addressed to Customer Services. Tel:02089969001. Fax:02089967001. In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as BritishStandards, unless otherwise requested. Information on standards BSI provides
32、 a wide range of information on national, European and international standards through its Library and its Technical Help to Exporters Service. Various BSI electronic information services are also available which give details on all its products and services. Contact the Information Centre. Tel:0208
33、9967111. Fax:02089967048. Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards. For details of these and other benefits contact Membership Administration. Tel:02089967002. Fax:02089967001. Copyright Copyright
34、subsists in all BSI publications. BSI also holds the copyright, in the UK, of the publications of the international standardization bodies. Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or b
35、y any means electronic, photocopying, recording or otherwise without prior written permission from BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols, and size, type or grade designations. If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained. If permission is granted, the terms may include royalty payments or a licensing agreement. Details and advice can be obtained from the Copyright Manager. Tel:02089967070.
