1、BRITISH STANDARD BS1127-4: 1990 EN25968: 1989 ISO5968:1981 Screwing dies and dienuts Part 4: Terminology for circular screwing dies This European Standard EN25968 has the status of a British Standard UDC621.992.3:001.4BS1127-4:1990 This British Standard was published under the authority ofthe Board
2、of BSI and comes intoeffect on 29June1990 BSI11-1999 First published November 1943 First revision June 1950 Second revision September 1974 Third revision June 1990 The following BSI references relate to the work on this standard: Committee reference MTE/4 Draft for comment 87/72648 DC ISBN 0 580 185
3、64 8 Cooperating organizations The European Committee for Standardization, under whose supervision this European Standard was prepared, comprises the national standards organizations of the following Western European countries. Austria Oesterreichisches Normungsinstitut Belgium Institut belge de nor
4、malisation Denmark Dansk Standardiseringsraad 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 Autho
5、rity of Ireland Italy Ente Nazionale Italiano di Unificazione Luxemburg 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 Standa
6、rdiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date of issue CommentsBS1127-4:1990 BSI 11-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii
7、 Brief history 2 Text of EN25968 3 National appendix W Inside back coverBS1127-4:1990 ii BSI 11-1999 National foreword This Part of BS1127 has been prepared under the direction of the Machine, Engineers and Hand Tools Standards Policy Committee and is the English language version of EN25968 “Circula
8、r screwing dies; Terminology”, published by the European Committee for Standardization (CEN). It is identical with ISO5968, published by the International Organization for Standardization(ISO). This Part of BS1127 together with Parts 1, 2, 3 and 5 supersedes BS1127:1974 which is withdrawn. BS1127 co
9、mprises the following Parts. Part 1: Specification for hand- and machine-operated circular screwing dies and hand-operated die stocks; Part 2: Specification for hand- and machine-operated circular screwing dies for taper pipe threads; R series; Part 3: Specification for hand- and machine-operated ci
10、rcular screwing dies for parallel pipe threads; G series; Part 4: Terminology for circular screwing dies; Part 5: Specification for dimensions of hexagonal dienuts. BS1127 was first published in 1943 as a war emergency standard and revised in1950 to include hexagonal dienuts and again in 1974 to inc
11、orporate the change from inch to metric dimensions. The purpose of this present revision is to take account of changes made to related ISO standards since 1974 and the requirement of the United Kingdom as a CEN member to give European Standard EN25968:1989 the status of a national standard without a
12、lteration and withdraw any conflicting standards. 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 immunity from legal obli
13、gations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 6, 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 indicated in the a
14、mendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN25968 October1989 UDC621.992.3:001.4 Key words: Power-operated tools, drawing dies, vocabulary, nomenclature English version Circular screwing dies: Terminology (ISO5968:1981) Filires rondes de filetage; Nom
15、enclature et terminologie (ISO5968:1981) Runde Schneideisen; Begriffe und Benennungen (ISO5968:1981) This European Standard was accepted by CEN on 6 September 1989 and is identical to the ISO standard as referred to. CEN members are bound to comply with the requirements of the CEN/CENELEC Common Rul
16、es which stipulate the conditions for giving this European Standard 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 CEN Central Secretariat or to any CEN member. This Eu
17、ropean Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to CENCentral Secretariat has the same status as the official versions. CEN members are the nat
18、ional standards organizations of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komite
19、e fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels CEN1989 Copyright reserved to all CEN members Ref. No. EN25968:1989EEN25968:1989 2 BSI 11-1999 Brief history Following consideration of the results of a Primary Questionnaire among members, the CEN Technical Board decided in March
20、 1988 to submit the International Standard ISO5968:1981, Circular screwing dies; Terminology to the Formal Vote. This vote was positive. Statement The text of the International Standard ISO5968:1981 having been approved by CEN as a European Standard without any modification according to the Common C
21、EN/CENELEC Rules, the following countries are bound to implement this standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Contents Page Brief history 2 1 Scope and fie
22、ld of application 3 2 Form of circular screwing dies 4 3 Features of screwing dies 5EN25968:1989 BSI 11-1999 3EN25968:1989 4 BSI 11-1999EN25968:1989 BSI 11-1999 5EN25968:1989 6 BSI 11-1999BS1127-4:1990 BSI 11-1999 National appendix W The United Kingdom participation in the preparation of this Europe
23、an Standard was entrusted by theMachine, Engineers and Hand Tools Standards Policy Committee (MTE/-) to Technical Committee MTE/4, upon which the following bodies were represented: Advanced Manufacturing Technology Research Institute British Electrical Systems Association (BEAMA Ltd.) Federation of
24、British Engineers Tool Manufacturers Gauge and Tool Makers Association Institution of Production Engineers Screw Thread Tool Manufacturers Association Society of British Aerospace Companies Limited Twist Drill and Reamer AssociationBS1127-4: 1990 EN25968: 1989 ISO5968:1981 BSI 389 Chiswick High Road
25、 London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body 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 re
26、vision. Users of BritishStandards should make sure that they possess the latest amendments 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 t
27、he Secretary of the technical committee responsible, the identity of which can be 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. Bu
28、ying standards Orders for all BSI, international and foreign standards publications 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 Br
29、itishStandards, unless otherwise requested. Information on standards BSI provides 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 d
30、etails on all its products and services. Contact the Information Centre. Tel:02089967111. 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
31、Membership Administration. Tel:02089967002. Fax:02089967001. Copyright Copyright 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 extrac
32、t may be reproduced, stored in a retrieval system or transmitted in any form or by 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 symbo
33、ls, 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.
