1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-22863-7 SANS 8764-1:2009Edition 1ISO 8764-1:2004Edition 3SOUTH AFRICAN NATIONAL STANDARD Assembly tools for screws and nuts Screwdrivers f
4、or cross-recessed head screws Part 1: Driver tips This national standard is the identical implementation of ISO 8764-1:2004 and is adopted with the permission of the International Organization for Standardization. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pre
5、toria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 8764-1:2009 Edition 1 ISO 8764-1:2004 Edition 3 Table of changes Change No. Date Scope National foreword This South African standard was approved by National Committee SABS TC 1080, Handheld non-electrical tools for general
6、 purpose use, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This SABS document was published in September 2009. Reference numberISO 8764-1:2004(E)ISO 2004INTERNATIONAL STANDARD ISO8764-1Third edition2004-04-01Assembly tools for scr
7、ews and nuts Screwdrivers for cross-recessed head screws Part 1: Driver tips Outils de manuvre pour vis et crous Tournevis pour vis empreinte cruciforme Partie 1: Extrmits de tournevis SANS 8764-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the
8、 SABS .ISO 8764-1:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing.
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11、ddress given below. ISO 2004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or I
12、SOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2004 All rights reservedSANS 8764-1:2009This s tandard may only be used and pri
13、nted by approved subscription and freemailing clients of the SABS .ISO 8764-1:2004(E) ISO 2004 All rights reserved iiiContents Page Foreword iv 1 Scope 1 2 Normative references . 1 3 Shapes and dimensions. 1 4 Technical requirements 5 5 Inspection of dimensions. 5 6 Torque test. 9 7 Designation 12 A
14、nnex A (informative) Explanation of choice of gauge dimensions for form PH tips. 13 Annex B (informative) Guide for inspection gauges for form PZ tips. 14 SANS 8764-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 8764-1:2004(E) iv I
15、SO 2004 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested
16、 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 Comm
17、ission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technic
18、al committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO sha
19、ll not be held responsible for identifying any or all such patent rights. ISO 8764-1 was prepared by Technical Committee ISO/TC 29, Small tools, Subcommittee SC 10, Assembly tools for screws and nuts, pliers and nippers. This third edition cancels and replaces the second edition (ISO 8764-1:1999), w
20、hich has been technically revised as follows: a designation has been added; in the English version, the term “point” becomes “tip” and “type” becomes “form”; in the French version, the term “type” becomes “forme”. ISO 8764 consists of the following parts, under the general title Assembly tools for s
21、crews and nuts Screwdrivers for cross-recessed head screws: Part 1: Driver tips Part 2: General requirements, lengths of blades and marking of hand-operated screwdrivers SANS 8764-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .INTERNAT
22、IONAL STANDARD ISO 8764-1:2004(E) ISO 2004 All rights reserved 1Assembly tools for screws and nuts Screwdrivers for cross-recessed head screws Part 1: Driver tips 1 Scope This part of ISO 8764 specifies the shapes and dimensions, technical requirements and torque test methods for the tips of hand dr
23、ivers and of machine-operated bits for cross-recessed head screws. It specifies two forms of driver tips: form PH for form H recesses; form PZ for form Z recesses. H and Z form recesses are specified in ISO 4757. General requirements, lengths of blades and marking of hand-operated screwdrivers are g
24、iven in ISO 8764-2. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 47
25、57, Cross recesses for screws ISO 8764-2, Assembly tools for screws and nuts Screwdrivers for cross-recessed head screws Part 2: General requirements, lengths of blades and marking of hand-operated screwdrivers 3 Shapes and dimensions The shapes and dimensions of the tips shall be in accordance with
26、 Figure 1 and Table 1 for form PH, and with Figure 2 and Table 2 for form PZ. The axis of the tip shall be concentric with the axis of the tool. When a plated finish is used, the dimensions shall be met after plating. SANS 8764-1:2009This s tandard may only be used and printed by approved subscripti
27、on and freemailing clients of the SABS .ISO 8764-1:2004(E) 2 ISO 2004 All rights reservedDimensions in millimetres aLength of straight part. bBlending of flutes dependent on method of manufacture. cFlutes equally spaced at 90. dFor tip No. 0, see detail below (f). eSection Y-Y: true flute angle meas
28、ured at right angles to straight part of length l. fTip No. 0. Figure 1 Form PH tips SANS 8764-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 8764-1:2004(E) ISO 2004 All rights reserved 3aAxis b. bAxis g. cAxes b and g. Figure 2 Fo
29、rm PZ tips SANS 8764-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 8764-1:2004(E) 4 ISO 2004 All rights reservedTable 1 Dimensions of form PH tips b e f g l min. Nominal blade diameter Tip mm mm mm mm mm mm 0,61 0,38 0,31 0,84 7 0
30、0 0 3 0,56 0,29 0,26 0,79 2,78 See Figure 1 6 30 1,03 0,54 0,53 1,30 138 30 7 00 1 4,5 0,98 0,49 0,48 1,25 2,78 138 00 6 30 1,56 1,13 0,64 2,31 140 30 5 45 2 6 1,51 1,08 0,59 2,26 4,37 140 00 5 15 2,52 2,12 0,81 3,84 146 30 5 45 3 8 2,47 2,07 0,73 3,79 6,74 146 00 5 15 3,60 2,76 1,12 5,11 153 30 7 0
31、0 4 10 3,55 2,71 1,04 5,06 8,34 153 00 6 30 Table 2 Dimensions of form PZ tips b f g l r min. Nominal blade diameter Tip mm mm mm mm mm mm 0,78 0,45 0,92 0,10 0 3 0,70 0,42 0,89 1,54 0,07 1,19 0,71 1,40 0,13 1 4,5 1,11 0,68 1,37 2,02 0,10 7 00 6 30 8 15 7 45 4 53 4 23 1,78 1,00 2,44 0,30 2 6 1,70 0,
32、95 2,39 3,17 0,15 46 15 46 00 2,65 1,38 3,96 0,36 3 8 2,55 1,33 3,91 4 0,20 5 45 5 15 6 50 6 20 3 30 3 00 4,02 2,10 5,18 0,51 7 00 8 15 4 53 4 10 3,92 2,05 5,13 5,4 0,36 6 30 7 45 4 23 56 30 56 15 SANS 8764-1:2009This s tandard may only be used and printed by approved subscription and freemailing cl
33、ients of the SABS .ISO 8764-1:2004(E) ISO 2004 All rights reserved 54 Technical requirements 4.1 Material Components shall be manufactured from steel which, when suitably heat-treated, satisfies the mechanical requirements and torque tests specified in 4.2 and Clause 6 respectively. 4.2 Heat treatme
34、nt and hardness The screwdriver tips shall have a minimum hardness of 54 HRC for hand-operated screwdrivers, 58 HRC for machine-operated screwdrivers, for a minimum length of three times the nominal blade diameter measured from the driving end. The remainder of the tool shall be hardened and tempere
35、d to a minimum of 50 HRC. All hardness measurements shall be taken on ground flats, parallel with the axis and of sufficient area to give an accurate reading. 4.3 Finish Components shall be free from cracks, blemishes and other deleterious defects. 5 Inspection of dimensions 5.1 General Conformance
36、with the dimensions as specified in Clause 3 shall be determined either by direct measurement or by the use of suitable inspection gauges as defined in 5.2 and 5.3. 5.2 Inspection gauges for form PH tips The dimensions of the tips are in accordance with this part of ISO 8764 when they fit properly i
37、nto the gauge and when the edges of the tips at which the two cones of 53 and 142 meet and lie within step c of the gauge (see Figure 3 and Table 3). See Annex A for an explanation of the choice of dimensions. 5.3 Inspection gauges for form PZ tips See Table 4 and Figure 4. SANS 8764-1:2009This s ta
38、ndard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 8764-1:2004(E) 6 ISO 2004 All rights reservedDimensions in millimetres aSize No. 0. Figure 3 Inspection gauge for form PH tips SANS 8764-1:2009This s tandard may only be used and printed by approved
39、subscription and freemailing clients of the SABS .ISO 8764-1:2004(E) ISO 2004 All rights reserved 7Table 3 Dimensions of inspection gauge for form PH tips a b c e f m 0,005 min. 0,025 max. 0,005 00,0200150150+Tip mm mm mm mm mm mm 0 0,419 3 2,38 0,284 0,29 1 0,648 4,5 2,38 0,493 0,49 138 7 2 1,156 6
40、 3,97 0,769 1,08 140 3 1,918 8 6,34 1,257 2,07 146 5 45 4 2,553 10 0,254 7,94 1,804 2,71 153 7 Table 4 Dimensions of inspection gauge for form PZ tips b f1f2a i k g t rar max. 0,050+Tip mm mm mm mm mm mm mm mm mm mm 0,48 1,55 1,30 0,93 0,83 0 1,635 0,47 0,485 2,5 1,54 1,29 0,92 0,82 0,07 0,1 0,75 2,
41、03 1,78 1,41 1,24 1 2,215 0,74 0,775 3,47 2,02 1,77 1,40 1,23 7 10 7 00 7 45 7 35 4 234 131,04 3,16 2,91 2,43 1,85 2 3,135 1,03 1,080 5,64 3,15 2,90 2,42 1,84 0,1 0,12 46 0545 551,42 4,01 3,76 3,95 2,68 3 4,255 1,41 1,49 8,02 4,00 3,75 3,94 2,67 5 55 5 45 6 20 6 10 3 002 502,14 5,41 5,16 5,17 4,05 7
42、 10 7 45 4 234 6,565 2,13 2,195 10,67 5,40 5,15 5,16 4,04 0,15 0,15 7 00 7 35 4 1356 2056 10NOTE 1 The inspection gauge can only be used for checking the penetration depth of tool profiles. Through this the fitting precision of the tool profiles in the referring screw heads is guaranteed. The bases
43、of this test are given in ISO 4757 (for screws) and this part of ISO 8764 (for tools). NOTE 2 In order to make a visual test of penetration depth possible, the difference of the inspection gauge surface i and k is stated bigger than the theoretical determination of the tolerance gminand gmax. SANS 8
44、764-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .ISO 8764-1:2004(E) 8 ISO 2004 All rights reservedFigure 4 Inspection gauge for form PZ tips SANS 8764-1:2009This s tandard may only be used and printed by approved subscription and fre
45、emailing clients of the SABS .ISO 8764-1:2004(E) ISO 2004 All rights reserved 9aFor use, see Table 4. bPeriphery form at the manufacturers discretion. cForms for tips Nos. 0 to 4. dForms by “e.d.m. manufacturing” method in sizes 0 and 1 permitted. Figure 4 Inspection gauge for form PZ tips (continue
46、d) 6 Torque test The test specified in this clause applies to the driver tips only. The test blade shall be gripped in the jaws of the mandrel of a torque testing device (see Figure 5). The testing device shall also be equipped with a test block of the appropriate form and driver tip size so as to c
47、omply with the requirements of Figure 6 and Table 5. The minimum hardness of the test block shall be 62 HRC. After application of the minimum torque specified in Table 6, the driver tips shall not exhibit any fracture or permanent distortion. SANS 8764-1:2009This s tandard may only be used and print
48、ed by approved subscription and freemailing clients of the SABS .ISO 8764-1:2004(E) 10 ISO 2004 All rights reservedKey 1 adjustable counterbalance 2 test block pivoting support 3 sliding test piece support 4 appropriate mass aDistance from the fulcrum to the centre of the mass. Figure 5 Schematic representation of a torque testing device aForm shall be recessed with a punch corresponding to the driver tip dimensions. bAppropriate counterbore. Figure 6 Torque test block SANS 8764-1:2009This s tandard may only be used and printed by approved subscription and freemailing clients of t
