1、BRITISH STANDARD BS 949-5: 1990 EN 25967: 1989 ISO5967:1981 Screwing taps Part 5: Nomenclature and terminology This European Standard EN25967 has the status of a British Standard UDC 621.993.1:001.4BS949-5:1990 This British Standard was published under the authority ofthe Board of BSI and comes into
2、effect on 29 June 1990 BSI 03-1999 The following BSI references relate to the work on this standard: Committee reference MTE/4 Draft for comment 80/72332 DC ISBN 0 580 18630 X Cooperating organizations The European Committee for Standardization, under whose supervision this European Standard was pre
3、pared, comprises the national standards organizations of the following Western European countries. Austria Oesterreichisches Normungsinstitut Belgium Institut belge de normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisat
4、ion 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 Italiano di Unificazione Luxemburg Inspection du Travail et des Mines Netherlands Nederlands
5、 Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificacin Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Ame
6、ndments issued since publication Amd. No. Date of issue CommentsBS949-5:1990 BSI 03-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Brief history 2 Text of EN 25 967 3 1 Scope and field of application 3 2 References 4 3 Nomenclature of the main type of taps 4 3
7、.1 Short machine and hand taps 4 3.2 Long shank machine taps 5 3.3 Taps for automatic machines 6 3.4 Shell taps 6 3.5 Taper taps 7 4 Styles of threaded portion of taps 8 5 Sets of taps 10 6 Dimensional characteristics of taps 12 6.1 Lengths 12 6.2 Diameters 13 6.3 Cutting features Angles 14 6.4 Type
8、s of thread relief 16 7 Thread profile of taps 18 Annex A Equivalent German terms 19 Annex B Equivalent Italian terms 22 National appendix A Inside back cover National appendix B Inside back coverBS949-5:1990 ii BSI 03-1999 National foreword This Part of BS949 has been prepared under the direction o
9、f the Machine, Engineers and Hand Tools Standards Policy Committee and supersedes those clauses relating to nomenclature and terminology of BS949-1:1976 (including amendment No.1), BS949-2:1979 and BS949-3:1982 which are currently being revised to take this and other requirements into account. It is
10、 identical with ISO5967:1981 “Taps and thread cutting Nomenclature of the main types and terminology” prepared by Technical Committee ISO/TC29 of the International Organization for Standardization (ISO) on which the United Kingdom was represented. In1989 the European Committee for Standardization (C
11、EN) endorsed ISO5967 as the European Standard EN25967:1989. The publication of this Part5 of BS949 fulfils the United Kingdom obligations as a member of CEN to give EN25967 the status of a national standard, without modification. The existing BS949-1:1976; BS 949-2:1979 and BS 949-3:1982 are current
12、ly being revised to withdraw any conflicting requirements with EN25967 and EN22857:1989 (which is identical to BS949-4), again as an United Kingdom obligation as a member of CEN, and to update them taking account of ISO529:1975 including amendments No.1 and No.2, ISO2283:1972, ISO2284:1987 and ISO59
13、69:1979 which have not been adopted by CEN. It is envisaged that after the completion of these revisions BS949 will consist of the following Parts: Part 1: Specification of general dimensions for ISO metric thread taps; Part 2: Specification for unified thread taps manufacturing tolerances; Part 3:
14、Specification for pipe thread taps; Part 4 1) : Specification for metric ground thread taps: manufacturing tolerances; Part 5: Nomenclature and terminology. NOTETypographical errors. It should be noted that there is no page20 in the original text of ISO5967:1981. A British Standard does not purport
15、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 obligations. Summary of pages This document comprises a front cover, an inside front cover
16、, pagesi andii, theEN title page, pages2 to24, 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 amendment table on theinside front cover. 1) Published.EUROPEAN STANDARD NORME EUROPENNE E
17、UROPISCHE NORM EN25 967 October1989 UDC621.993.1:001.4 Key words: Power-operated tools, taps, vocabulary, nomenclature English version Taps and thread cutting: Nomenclature of the main types and terminology (ISO5967:1981) Tarauds; Nomenclature des principaux types et terminologie (ISO5967:1981) Gewi
18、ndebohrer; Benennungen der wichtigsten Formen und Begriffe (ISO 5967:1981) This European Standard was accepted by CEN on 9 June 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 Rules which stipulate the conditio
19、ns 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 European Standard exists in three
20、 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 CEN Central Secretariat has the same status as the official versions. CEN members are the national standards organizations
21、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 Komitee fr Normung Central Secretari
22、at: Rue Brderode2,B-1000Brussels CEN 1989 Copyright reserved to all CEN members Ref. No. EN 25 967:1989 EEN25967:1989 BSI 03-1999 2 Brief history Following consideration of the results of a Primary Questionnaire among members, the CEN Technical Board decided in March1988 to submit the International
23、Standard ISO 5967:1981, Taps and thread cutting Nomenclature of the main types and terminology. to the Formal Vote. This vote was positive. Statement The text of the International Standard ISO5967:1981 having been approved by CEN as a European Standard without any modification according to the Commo
24、n CEN/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.EN25967:1989 BSI 03-1999 3EN25967:1989 4 BS
25、I 03-1999EN25967:1989 BSI 03-1999 5EN25967:1989 6 BSI 03-1999EN25967:1989 BSI 03-1999 7EN25967:1989 8 BSI 03-1999EN25967:1989 BSI 03-1999 9EN25967:1989 10 BSI 03-1999EN25967:1989 BSI 03-1999 11EN25967:1989 12 BSI 03-1999EN25967:1989 BSI 03-1999 13EN25967:1989 14 BSI 03-1999EN25967:1989 BSI 03-1999 1
26、5EN25967:1989 16 BSI 03-1999EN25967:1989 BSI 03-1999 17EN25967:1989 18 BSI 03-1999EN25967:1989 BSI 03-1999 19EN25967:1989 20 BSI 03-1999EN25967:1989 BSI 03-1999 21EN25967:1989 22 BSI 03-1999EN25967:1989 BSI 03-1999 23EN25967:1989 24 BSI 03-1999BS949-5:1990 BSI 03-1999 National appendix A The United
27、Kingdom participation in the preparation of this European Standard was entrusted by the Machine, 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 El
28、ectrical Systems Association (BEAMA Ltd.) Federation of British Engineers Tool Manufacturers Gauge and Tool Makers Association Institution of Production Engineers Screw Thread Tool Manufacturers Association Society of British Aerospace Companies Ltd. Twist Drill and Reamer Association National appen
29、dix B The British Standards corresponding to International Standards referred to in the text with the exception of ISO3002/1 for which there is no corresponding British Standard are as follows: International standard Corresponding British Standard ISO 529:1975 BS 949 Screwing taps ISO 2283:1972 Part
30、 1:1976 Specification for taps for ISO metric threads (Technically equivalent) ISO 2284:1976 Part 3:1982 Specification for taps for pipe threads (G series, Rp series and Rcseries) (identical) ISO 2857:1973 Part 1:1976 Specification for taps for ISO metric threads (Related)BSI 389 Chiswick High Road
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