© ISO 2017 Hand taps for parallel and taper pipe threads — General dimensions and marking Tarauds à main pour filetages cylindrique et conique de tuyauterie — Dimensions générales et marquage INTERNAT[.]
INTERNATIONAL STANDARD ISO 2284 Fourth edition 2017-02 Hand taps for parallel and taper pipe threads — General dimensions and marking Tarauds main pour filetages cylindrique et conique de tuyauterie — Dimensions générales et marquage Reference number ISO 2284:2017(E) © ISO 2017 ISO 2284:2017(E) COPYRIGHT PROTECTED DOCUMENT © ISO 2017, Published in Switzerland All rights reserved Unless otherwise specified, no part o f this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission Permission can be requested from either ISO at the address below or ISO’s member body in the country o f the requester ISO copyright o ffice Ch de Blandonnet • CP 401 CH-1214 Vernier, Geneva, Switzerland Tel +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org ii © ISO 2017 – All rights reserved ISO 2284:2017(E) Contents Page Foreword iv Scope Normative references Terms and definitions General dimensions Marking Annex A (informative) Bases for calculation of the dimensions Annex B (informative) Relationship between designations in this document and the ISO 13399 series Bibliography © ISO 2017 – All rights reserved iii ISO 2284:2017(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies) The work o f 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 represented on that committee International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters o f electrotechnical standardization The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part In particular the different approval criteria needed for the di fferent types o f ISO documents should be noted This document was dra fted in accordance with the editorial rules of the ISO/IEC Directives, Part (see www.iso org/directives) Attention is drawn to the possibility that some o f the elements o f this document may be the subject o f patent rights ISO shall not be held responsible for identi fying any or all such patent rights Details o f any patent rights identified during the development o f the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso org/patents) Any trade name used in this document is in formation given for the convenience o f users and does not constitute an endorsement For an explanation on the voluntary nature o f standards, the meaning o f ISO specific terms and expressions related to formity assessment, as well as in formation about ISO’s adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso org/iso/foreword html This document was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 9, Tools with defined cutting edges, cutting items This fourth edition cancels and replaces the third edition (ISO 2284:1987), of which it constitutes a minor revision with the following changes: — added Annex B giving the relationship between the symbols o f this document and the symbols according to the ISO 13399 series iv © ISO 2017 – All rights reserved INTERNATIONAL STANDARD ISO 2284:2017(E) Hand taps for parallel and taper pipe threads — General dimensions and marking Scope T h i s c ument s p e c i fie s the genera l d i men s ion s and marki ng o f h and tap s I t i s appl ic able to the two fol lowi ng for pip e th re ad s typ e s o f tap: — taps for parallel threads (see Figure and Table 1), — taps for taper threads (see Figure and Table 2), having threads in accordance with ISO 7-1 and ISO 228-1 Furthermore, it gives in Annex A the bases used for calculation of the dimensions, and in Annex B the relationship between designations in this document and the ISO 13399 series Normative references T he fol lowi ng c u ments are re ferre d to i n the tex t i n s uch a way th at s ome or a l l o f thei r content s titute s re qu i rements o f th i s c u ment For date d re ference s , on ly the e d ition cite d appl ie s For u ndate d re ference s , the late s t e d ition o f the re ference d c ument (i nclud i ng a ny amend ments) appl ie s ISO 237, Rotating tools with parallel shanks — Diameters of shanks and sizes of driving squares ISO 5969, Ground thread taps for pipe threads G series and Rp series — Tolerances on the threaded portion Terms and definitions No term s and defi nition s a re l i s te d i n th i s c u ment ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia: available at http://www.electropedia org/ — ISO Online browsing platform: available at http://www.iso org/obp General dimensions The general dimensions are given in Table and Table S n k d i ame ters and d rivi ng s quare s sh a l l form to the s p e ci fic ation s given i n I S O 7, the tolerance s being as follows: — on diameter, d1 : h9 for precision shanks; h11 for other shanks; a: h11; h12 (including errors of form of the square and of its position in relation to the shank) — on width acro s s flats , © ISO 2017 – All rights reserved ISO 2284:2017(E) Marking Taps in accordance with this document and with the requirements of ISO 5969 shall be marked, on the shank, with the following indications: a) the letter designating the thread series; b) the designation of the thread A G series parallel thread tap with designation 3/4 shall be marked as follows: G 3/4 An Rp series parallel thread tap with designation 1/4 shall be marked as follows: Rp 1/4 An Rc series taper thread tap with designation shall be marked as follows: Rc Where to ol s comply i n a l l re s p e c ts with the releva nt I nternationa l Standa rd s , the s ymb ol I S O may b e appended to the mark at the discretion of the manufacturer Figure — Tap for parallel threads — G series and Rp series © ISO 2017 – All rights reserved ISO 2284:2017(E) Table — Taps for parallel threads — G series and Rp series Dimensions in millimetres Thread designation 1/16 1/8 1/4 3/8 1/2 (5/8) 3/4 (7/8) 1 1/4 1/2 (1 3/4) (2 1/4) 1/2 3 1/2 Number of threads in 25,4 mm 28 28 19 19 14 14 14 14 11 11 11 11 11 11 11 11 11 11 d nom 7,723 9,728 13,157 16,662 20,955 22,911 26,441 30,201 33,249 41,91 47,803 53,746 59,614 65,71 75,184 87,884 100,33 113,03 Pitch ≈ 0,907 1,337 1,814 2,309 d1 h9 5,6 10 12,5 16 18 20 22,4 25 31,5 35,5 40 45 50 63 71 NOTE The sizes shown in parentheses are to be avoided whenever possible © ISO 2017 – All rights reserved l +2 –1 14 15 19 21 26 28 29 33 36 37 39 41 42 45 48 50 53 L 52 59 67 75 87 91 96 102 109 119 125 132 140 142 153 164 173 185 Square a h11 4,5 6,3 10 12,5 14 16 18 20 25 28 11 13 16 18 20 22 24 28 31 31,5 35,5 40 50 56 34 38 42 51 56 l ISO 2284:2017(E) Figure — Tap for taper threads — Rc series Table — Taps for taper threads — Rc series Thread designation 1/16 1/8 1/4 3/8 1/2 3/4 1 1/4 1/2 2 1/2 3 1/2 4 Number of threads in 25,4 mm 28 28 19 19 14 14 11 11 11 11 11 11 11 11 d nom 7,723 9,728 13,157 16,662 20,955 26,441 33,249 41,91 47,803 59,614 75,184 87,884 100,33 113,03 Pitch ≈ 0,907 1,337 1,814 2,309 d1 h9 5,6 10 12,5 16 20 25 31,5 35,5 40 45 50 63 71 l +2 –1 14 15 19 21 26 28 33 36 37 41 45 48 50 53 Dimensions in millimetres l L max 52 59 67 75 87 96 109 119 125 140 153 164 173 185 10,1 15 15,4 20,5 21,8 26 28,3 28,3 32,7 37,1 40,2 41,9 46,2 Square a h11 4,5 6,3 10 12,5 16 20 25 28 31,5 35,5 40 50 56 l 11 13 16 20 24 28 31 34 38 42 51 56 © ISO 2017 – All rights reserved ISO 2284:2017(E) Annex A (informative) Bases for calculation of the dimensions A.1 General This document has been prepared on the basis of empirical formulae extracted from standards and exi s ti ng prac tice i n va riou s cou ntrie s , and b y ta ki ng I S O i nto s ideration A.2 Threaded length The threaded length consists of the entering length and the full thread length We therefore have Formula (A.1): p + 3,08 d0,55 (A.1) T he fi rs t term o f th i s formu la corre s p ond s to the ma xi mu m enteri ng leng th o f th re ad s A.3 Shank length The shank length consists of the “free” length (outside the tap holder) of the shank, that length supposed f f f have Formula (A.2): (6,3 d0,45 ) + (10 d10,25 ) + (A.2) to b e ab s orb e d b y the cla mp o the tappi ng mach i ne and the leng th o the d rivi ng s quare; we there ore l T he fi rs t term o f th i s formu la corre s p ond s to the clamp and the third to the length of the square © ISO 2017 – All rights reserved fre e leng th, the s e cond to the leng th ab s orb e d by the ISO 2284:2017(E) Annex B (informative) Relationship between designations in this document and the ISO 13399 series For the rel ation sh ip b e twe en the de s ignation s i n th i s c u ment and pre ferre d s ymb ol s accord i ng to the ISO 13399 series, see Table B.1 Table B.1 — Relationship between designations in this document and the ISO 13399 series Symbol in this document Thread Number of threads in 25,4 mm d1 d1 h9 l L Pitch Reference in this document Table Table Table Table Table Table Table Table Table Table Table Table Table Table Property name in the ISO 13399 series Symbol in the ISO 13399 series Reference in the ISO 13399 series TDFR 726E3EACB6BE4 threads per inch TPI 71D1A6AAC8707 connection diameter machine side tolerance class connection diameter machine side thread cutting part length DCONMS 71EBDBF5060E6 TCDCONMS 72719B2BD8041 THL 71E02C65BB9DA overall length OAL 71D078EB7C086 thread pitch TP 71CEAEC08D4B0 thread diameter, inch fraction © ISO 2017 – All rights reserved ISO 2284:2017(E) Bibliography [1] [2] [3] [4] ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances and designation ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads — Part 1: Dimensions, tolerances and designation ISO 529, Short machine taps and hand taps ISO 13399 (all parts), Cutting tool data representation and exchange © ISO 2017 – All rights reserved ISO 2 84: 01 7(E) ICS 00.5 Price based on pages © ISO 2017 – All rights reserved