BS-949-5-1990 EN-25967-1989 ISO-5967-1981.pdf

BRITISH STANDARD BS 949-5: 1990 EN 25 967: 1989 ISO 5967:1981 Screwing taps Part 5: Nomenclature and terminology This European Standard EN 25 967 has the status of a British Standard UDC 621.993.1:001.4 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 949-5:1990 This British Standard was published under the authority of the Board of BSI and comes into 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 prepared, comprises the national standards organizations of the following Western European countries. AustriaOesterreichisches Normungsinstitut BelgiumInstitut belge de normalisation DenmarkDansk Standardiseringsraad FinlandSuomen Standardisoimisliito, r.y. FranceAssociation française de normalisation GermanyDeutsches Institut für Normung e.V. GreeceHellenic Organization for Standardization IcelandTechnological Institute of Iceland IrelandNational Standards Authority of Ireland ItalyEnte Nazionale Italiano di Unificazione LuxemburgInspection du Travail et des Mines NetherlandsNederlands Normalisatie-instituut NorwayNorges Standardiseringsforbund PortugalInstituto Portuguès da Qualidade SpainAsociación Española de Normalización y Certificación SwedenStandardiseringskommissionen i Sverige SwitzerlandAssociation suisse de normalisation United KingdomBritish Standards Institution Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 949-5:1990 © BSI 03-1999i Contents Page Cooperating organizationsInside front cover National forewordii Brief history2 Text of EN 25 9673 1Scope and field of application3 2References4 3Nomenclature of the main type of taps4 3.1Short machine and hand taps4 3.2Long shank machine taps5 3.3Taps for automatic machines6 3.4Shell taps6 3.5Taper taps7 4Styles of threaded portion of taps8 5Sets of taps10 6Dimensional characteristics of taps12 6.1Lengths12 6.2Diameters13 6.3Cutting features Angles14 6.4Types of thread relief16 7Thread profile of taps18 Annex A Equivalent German terms19 Annex B Equivalent Italian terms22 National appendix AInside back cover National appendix BInside back cover Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 949-5:1990 ii © BSI 03-1999 National foreword This Part of BS 949 has been prepared under the direction of the Machine, Engineers and Hand Tools Standards Policy Committee and supersedes those clauses relating to nomenclature and terminology of BS 949-1:1976 (including amendment No. 1), BS 949-2:1979 and BS 949-3:1982 which are currently being revised to take this and other requirements into account. It is identical with ISO 5967:1981 “Taps and thread cutting Nomenclature of the main types and terminology” prepared by Technical Committee ISO/TC 29 of the International Organization for Standardization (ISO) on which the United Kingdom was represented. In 1989 the European Committee for Standardization (CEN) endorsed ISO 5967 as the European Standard EN 25 967:1989. The publication of this Part 5 of BS 949 fulfils the United Kingdom obligations as a member of CEN to give EN 25 967 the status of a national standard, without modification. The existing BS 949-1:1976; BS 949-2:1979 and BS 949-3:1982 are currently being revised to withdraw any conflicting requirements with EN 25 967 and EN 22 857:1989 (which is identical to BS 949-4), again as an United Kingdom obligation as a member of CEN, and to update them taking account of ISO 529:1975 including amendments No. 1 and No. 2, ISO 2283:1972, ISO 2284:1987 and ISO 5969:1979 which have not been adopted by CEN. It is envisaged that after the completion of these revisions BS 949 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: Specification for pipe thread taps; Part 41): Specification for metric ground thread taps: manufacturing tolerances; Part 5: Nomenclature and terminology. NOTETypographical errors. It should be noted that there is no page 20 in the original text of ISO 5967:1981. 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 obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 24, 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 the inside front cover. 1) Published. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPEÉNNE EUROPÄISCHE NORM EN 25 967 October 1989 UDC 621.993.1:001.4 Key words: Power-operated tools, taps, vocabulary, nomenclature English version Taps and thread cutting: Nomenclature of the main types and terminology (ISO 5967:1981) Tarauds; Nomenclature des principaux types et terminologie (ISO 5967:1981) Gewindebohrer; 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 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 European 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 CEN Central Secretariat has the same status as the official versions. CEN members are the national 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 Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: Rue Bréderode 2, B-1000 Brussels © CEN 1989 Copyright reserved to all CEN members Ref. No. EN 25 967:1989 E Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 © BSI 03-1999 2 Brief history Following consideration of the results of a Primary Questionnaire among members, the CEN Technical Board decided in March 1988 to submit the International 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 ISO 5967:1981 having been approved by CEN as a European Standard without any modification according to the Common 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. Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 © BSI 03-19993 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 4 © BSI 03-1999 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 © BSI 03-19995 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 6 © BSI 03-1999 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 © BSI 03-19997 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 8 © BSI 03-1999 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 © BSI 03-19999 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 10 © BSI 03-1999 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 © BSI 03-199911 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 12 © BSI 03-1999 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 © BSI 03-199913 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 14 © BSI 03-1999 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 © BSI 03-199915 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 16 © BSI 03-1999 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 © BSI 03-199917 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 18 © BSI 03-1999 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 © BSI 03-199919 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 20 © BSI 03-1999 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 © BSI 03-199921 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 22 © BSI 03-1999 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 © BSI 03-199923 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 25 967:1989 24 © BSI 03-1999 Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 949-5:1990 © BSI 03-1999 National appendix A The United 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 Electrical 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 appendix B The British Standards corresponding to International Standards referred to in the text with the exception of ISO 3002/1 for which there is no corresponding British Standard are as follows: International standardCorresponding British Standard ISO 529:1975BS 949 Screwing taps ISO 2283:1972Part 1:1976 Specification for taps for ISO metric threads (Technically equivalent) ISO 2284:1976Part 3:1982 Specification for taps for pipe threads (G series, Rp series and Rc series) (identical) ISO 2857:1973Part 1:1976 Specification for taps for ISO metric threads (Related) Licensed Copy: London South Bank University, London South Bank University, Fri Dec 08 00:47:00 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI Ð British Standards Institution BSI is the independent national body responsible for preparing British Standards. 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