BS 84-2007 Parallel screw threads of Whitworth form Requirements
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C6CDFF2640854ECA849BFFDF2EB09029 |
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0.51 |
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66 |
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日期： |
2010-10-4 |
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BS 84:2007,Parallel screw threads of,Whitworth form –,Requirements,ICS 21.040.20,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 57923 3,The following BSI references relate to the work on this standard:,Committee reference FME/9,Draft for comment 07/30158483 DC,Publication history,First published as BS 84:1918 and BS 92:1919,Second edition as BS 84 (incorporating BS 92) May 1940,Third edition, September 1956,Fourth edition, November 2007,Amendments issued since publication,Amd. no. Date Text affected,BS 84:2007,. BSI 2007 ?i,BS 84:2007,Contents,Foreword iii,1 Scope 1,2 Normative references 1,3 Terms and definitions and symbols 1,4 Profile of Whitworth screw thread 2,5 Tolerance classes of external and internal threads 3,6 Limits of sizes, and tolerances, for,uncoated B.S.W. and B.S.F. threads 3,7 Limits of size, and tolerances,for B.S.W. and B.S.F. coated threads 4,8 Stainless steel external threads 5,9 Selected thread series 6,10 Designation of screw threads of Whitworth form 8,11 Gauges 8,Annexes,Annex A (normative) Truncated Whitworth form threads with flat,crests 40,Annex B (informative) Bases of tolerances and allowances for,Whitworth form screw threads 47,Annex C (informative) Tolerances on pitch and flank angle in relation,to tolerance on effective diameter 50,Annex D (informative) Form of the crests of Whitworth threads 53,Annex E (normative) Limits and tolerances for close class internal,threads for special uses 55,Bibliography 58,List of figures,Figure 1 – Basic form of Whitworth thread 9,Figure 2 – Effective diameter tolerance zones of recommended,combinations of classes of internal and external Whitworth form,threads 10,Figure 3 – Tolerance zones for a close class external thread and a,medium class internal thread [ in B.S.W. (20 t.p.i.) illustrated] 11,Figure 4 – Tolerance zones for a medium class external thread,with allowance and a normal class internal,thread [ in B.S.W. (20 t.p.i.) illustrated] 12,Figure 5 – Tolerance zones for a free class external thread with,allowance and a normal class internal,thread [ in B.S.W. (20 t.p.i.) illustrated] 13,Figure 6 – Effective diameter tolerance zones for external and internal,threads, uncoated or before coating, and after coating (c.f. Figure 2) of,sizes in nominal size and smaller 14,Figure A.1 – Tolerance zones for truncated Whitworth threads (close,class external thread and medium class internal,thread) [ in B.S.W. (20 t.p.i.) illustrated] 43,Figure D.1 – Crest forms resulting from different production,methods 54,List of tables,Table 1 – Coarse thread series (B.S.W.) – Basic sizes 15,Table 2 – Coarse thread series (B.S.W.) – External threads –,Close class – Limits and tolerances 16,14,---,14,---,14,---,34,---,14,---,BS 84:2007,ii ?. BSI 2007,Table 3 – Coarse thread series (B.S.W.) – Internal threads –,Medium class – Limits and tolerances 17,Table 4 – Coarse thread series (B.S.W.) – External threads –,Medium class – Limits and tolerances 18,Table 5 – Coarse thread series (B.S.W.) – Internal threads –,Normal class – Limits and tolerances 19,Table 6 – Coarse thread series (B.S.W.) – External threads –,Free class – Limits and tolerances 20,Table 7 – Fine thread series (B.S.F.) – Basic sizes 21,Table 8 – Fine thread series (B.S.F.) – External threads – Close class –,Limits and tolerances 22,Table 9 – Fine thread series (B.S.F.) – Internal threads –,Medium class – Limits and tolerances 23,Table 10 – Fine thread series (B.S.F.) – External threads –,Medium class – Limits and tolerances 24,Table 11 – Fine thread series (B.S.F.) – Internal threads –,Normal class – Limits and tolerances 25,Table 12 – Fine thread series (B.S.F.) – External threads – Free class –,Limits and tolerances 26,Table 13A – Selected thread series (Whit. S.) – Preferred diameters,and pitches – Fractional sizes 27,Table 13B – Selected thread series (Whit. S.) – Preferred diameters,and pitches – Decimal sizes 31,Table 14 – Selected thread series (Whit. S.) and non-standard threads –,Depths of thread for various pitches 34,Table 15 – Selected thread series (Whit. S.) and non-standard threads –,External threads – Medium and free class – Allowances 37,Table 16 – Selected thread series (Whit. S.) and non-standard threads –,External threads – Close class – Tolerances 37,Table 17 – Selected thread series (Whit. S.) and non-standard threads –,Internal threads – Medium class – Tolerances 38,Table 18 – Selected thread series (Whit. S.) and non-standard threads –,External threads – Medium class – Tolerances 38,Table 19 – Selected thread series (Whit. S.) ……
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