ISO INTERNATIONAL STANDARD 529 Third edition 2017-03 Short machine taps and hand taps Tarauds courts a machine et a main Reference number ISO 529:2017(E) International Organization for Standardization See=ZHEJIANG INST OF STANDARDIZATION C1 5956617 @IS02017 vided by IHS under I Not for Resale, 2017/5/11 01:59:40 No reproduction or networking permitted without license from IHS IS0 529:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of 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 of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Licensee-ZHEJIANG INST OF STANDARDIZAISQ 017 - All rights reserved Not for Resale, 2017/5/11 01:59:40 networking permited without license from IHS IS0 529:2017(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references ..1 3 Terms and definitions ..1 4 ISO metric threads .2 4.1 Threads up to M25. .2 4.1.1 Full-diameter shank taps with plain connecting portion .2 4.1.2 Full-diameter shank taps with recess 3 4.1.3 Relieved-shank taps 4 4.2 Threads above M25 .5 4.2.1 Relieved-shank taps for coarse pitch metric thread ..5 4.2.2 Relieved-shank taps for fine pitch metric thread .6 5 ISO inch threads, "Unified coarse" (UNC) and "Unified fine" (UNF) series .8 5.1 "Unified" series threads up to 25,4 mm. 5.1.1 Full-diameter shank taps with plain connecting portion 5.1.2 Full-diameter shank taps with recess .9 5.1.3 Relieved-shank taps. 10 5.2 "Unified" series threads above 25,4 mm. .11 5.2.1 Relieved-shank taps for“Unified coarse" series threads ..11 5.2.2 Relieved-shank taps for “Unified fine" series threads .12 6 Non-recommended inch threads ..13 6.1 “British Standard Whitworth" (BSW) and “British Standard Fine" (BSF) threads ..13 6.1.1 Full-diameter shank taps with recess 13 6.1.2 Relieved-shank taps .14 6.2 "British Association" (BA) threads .16 6.2.1 Full-diameter shank taps with plain connecting portion .16 6.2.2 Full-diameter shank taps with recess ..17 6.2.3 Relieved-shank taps. .18 Annex A (normative) Shank diameter, overall length and thread length as a function of range of diameters and pitches.. .19 Annex B (informative) Shank diameters and size of driving squares (Extract from Iso 237) ...22 Annex C (informative) Relationship between designations in this document and IS0 13399 series .23 Bibliography .26 ii See=ZHEJIANG INST OF STANDARDIZATION C1 5956617 thout license from IHS Not for Resale, 2017/5/11 01:59:40