BS 3643-1-2007 ISO metric screw threads Part 1 Principles and basic data
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AC9A4D9F203341168D0756142070E026 |
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文件大小(MB)： |
0.53 |
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页数： |
76 |
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日期： |
2010-10-4 |
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BS 3643-1:2007,ISO metric screw threads,Part 1: Principles and basic data,ICS 21.040.10,NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW,BRITISH STANDARD,Licensed copy:PONTYPRIDD COLLEGE, 05/01/2008, Uncontrolled Copy, . BSI,Publishing and copyright information,The BSI copyright notice displayed in this document indicates when the,document was last issued.,. BSI 2007,ISBN 978 0 580 57924 0,The following BSI references relate to the work on this standard:,Committee reference FME/9,Draft for comment 07/30158486 DC,Publication history,First published June 1963,Second edition, March 1981,Third edition, November 2007,Amendments issued since publication,Amd. no. Date Text affected,BS 3643-1:2007,Licensed copy:PONTYPRIDD COLLEGE, 05/01/2008, Uncontrolled Copy, . BSI,. BSI 2007 ?i,BS 3643-1:2007,Contents,Foreword iii,1 Scope 1,2 Normative references 1,3 Terms and definitions and symbols 1,4 Basic profile 2,5 General plan 5,6 Basic dimensions 8,7 Tolerances – Principles and basic data 18,8 Tolerances – Deviations for constructional threads 35,9 Tolerances – Limits of sizes for hot-dip galvanized external screw,threads to mate with internal screw threads tapped with,tolerance position H or G after galvanizing 53,10 Tolerances – Limits of sizes for internal screw threads to mate,with hot-dip galvanized external screw threads with maximum,size of tolerance position h before galvanizing 55,Annexes,Annex A (informative) Notes for guidance 60,Annex B (informative) Examples of calculations of limits of size for,metric screw threads 65,Bibliography 68,List of figures,Figure 1 – Basic profile of ISO metric thread 3,Figure 2 – Basic dimensions 8,Figure 3 – Tolerance positions with respect to zero line (basic size) 19,Figure 4 – Internal threads with tolerance position G 21,Figure 5 – Internal threads with tolerance position H 22,Figure 6 – External threads with tolerance positions e, f and g 22,Figure 7 – External threads with tolerance position h 23,Figure 8 – External root profile 31,Figure A.1 – Maximum material profiles for internal and external,threads 61,Figure B.1 – Illustration of limits of size for external thread,(see Example 1) 66,List of tables,Table 1 – Basic profile dimensions 4,Table 2 – Maximum nominal diameter 5,Table 3 – Diameter/pitch combinations 6,Table 4 – Basic dimensions 9,Table 5 – Fundamental deviations for internal threads and external,threads 24,Table 6 – Lengths of thread engagement 25,Table 7 – Minor diameter tolerances of internal threads (TD1) 26,Table 8 – Major diameter tolerances of external threads (Td) 27,Table 9 – Pitch diameter tolerances of internal threads (TD2) 28,Table 10 – Pitch diameter tolerances of external threads (Td2) 29,Table 11 – Minimum root radii 31,Table 12 – Recommended tolerance classes for internal threads 32,Table 13 – Recommended tolerance classes for external threads 32,Table 14 – Deviations 36,Table 15 – Deviations for hot-dip galvanized external threads 54,Licensed copy:PONTYPRIDD COLLEGE, 05/01/2008, Uncontrolled Copy, . BSI,BS 3643-1:2007,ii ?. BSI 2007,Table 16 – External thread limits for tolerance class 6az 55,Table 17 – Deviations for internal threads to mate with hot-dip,galvanized external threads 57,Table 18 – Internal screw thread limits for tolerance class 6AZ 58,Table 19 – Internal screw thread limits for tolerance class 6AX 59,Table A.1 – Nominal stress areas for external screw threads –,Coarse series 63,Table A.2 – Nominal stress areas for external screw threads –,Fine series 64,Summary of pages,This document comprises a front cover, an inside front cover,pages i to iv, pages 1 to 68, an inside back cover and a back cover.,Licensed copy:PONTYPRIDD COLLEGE, 05/01/2008, Uncontrolled Copy, . BSI,. BSI 2007 ?iii,BS 3643-1:2007,Foreword,Publishing information,This part of BS 3643 is published by BSI and came into effect,on 30 November 2007. It was prepared by Subcommittee SFTSE/1,Screws and fasteners technical specification committee, under the,authority of Technical Committee FME/9, Nuts, bolts and accessories.,A list of organizations represented on this committee can be obtained,on request to its secretary.,Supersession,This part of BS 3643 supersedes BS 3643-1:1981, which is withdrawn.,Relationship with other publications,This part of BS 3643 is based on a series of BS ISO, and ISO, standards,for ISO metric general purpose screw threads, each clause, from,Clause 4 onwards, being based on one BS ISO, or ISO, as follows:,?Clause 4: Basic profile: BS ISO 68-1:1998;,?Clause 5: General plan: BS ISO 261:1998;,?Clause 6: Basic dimensions: ISO 724:1993;,?Clause 7: Tolerances – Principles and basic data:,BS……
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