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    DIN EN ISO 1478-1999 Tapping screw thread (ISO 1478 1999) German version EN ISO 1478 1999《自攻螺钉螺纹》.pdf

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    DIN EN ISO 1478-1999 Tapping screw thread (ISO 1478 1999) German version EN ISO 1478 1999《自攻螺钉螺纹》.pdf

    1、DEUTSCHE NORM December 1999 Tapping screw threads English version of DIN EN IS0 1478 (IS0 1478 : 1999) DIN - EN IS0 1478 ICs 21.040.30 Supersedes October 1994 edition. Blechschraubengewinde (IS0 1478 : 1999) European Standard EN IS0 1478: 1999 has the status of a DIN Standard. A comma is used as the

    2、 decimal marker. National foreword This standard has been published in accordance with a decision taken by CEN/TC 185 to adopt, without alteration, International Standard IS0 1478 as a European Standard. The responsible German body involved in its preparation was the Normenausschuss Mechanische Verb

    3、indungselemente (Fasteners Standards Committee). Amendments This standard differs from the October 1994 edition in that the type R thread end has been included. Previous editions DIN 7970: 1952-08, 1956-12, 1970-07, 1984-11; DIN EN IS0 1478: 1994-10. EN comprises 4 pages. No pari of this standard ma

    4、y be reproduced without the prior permission of Ref. No. DIN EN IS0 1478 : 1999-1 Y Deutsches Institut fr Normung e. V., Berlin. wth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). English price group 06 Sales No. 1106 05.00 EUROPEAN STANDARD NORME EUR

    5、OPENNE EUROPISCHE NORM EN IS0 1478 August 1999 ICs 21.040.30 Supersedes EN IS0 1478 : 1994. English version Tapping screw threads (IS0 1478 : 1999) Filetage de vis tle (IS0 1478 : 1999) Blechschraubengewinde (IS0 1478 : 1999) This European Standard was approved by CEN on 1999-07-1 6. CEN members are

    6、 bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national stand- ards may be obtained on application to

    7、the Central Secretariat or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same sta

    8、tus as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Com

    9、mittee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1999. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN IS0 1478 : 1999 E Page 2 EN

    10、 IS0 1478 : 1999 Foreword International Standard IS0 1478 : 1999 Tapping screw threads, which was prepared by ISO/TC 2 Fasteners of the International Organization for Standardization, has been adopted by Technical Committee CEN/TC 185 Threaded and non-threaded mechanical fasteners and accessories, t

    11、he Secretariat of which is held by DIN, as a European Standard. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, and conflicting national standards withdrawn, by February 2000 at the latest. In accordance with the

    12、CENKENELEC Internal Regulations, the national standards organizations of the follow- ing countries are bound to implement this European Standard: Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, S

    13、pain, Sweden, Switzerland, and the United Kingdom. Endorsement notice The text of the International Standard IS0 1478 : 1999 was approved by CEN as a European Standard without any modification. 1 Scope This International Standard specifies the thread and thread ends for tapping screws (sheet metal s

    14、crews) with thread sizes from ST1,5 to ST9,5 inclusive. 2 Dimensions See Figures 1 and 2 and Table 1. Thread (ST) Thread profile a Slight radius Figure 1 -Thread dimensions Page 3 EN IS0 1478 : 1999 Cone end, type Ca Flat end, type F Rounded end, type R a No extrusion of excess metal beyond the apex

    15、 of the A slight rounding or truncation of the point is desirable. type C cone end resulting from thread rolling shall be permissible. Figure 2 -Thread ends Page 4 EN IS0 1478 : 1999 Table 1 - Dimensions Dimensions in miliimetre Thread size ST ST ST ST ST ST ST ST ST ST ST ST ST ST 1,5 1,9 2,2 2,6 2

    16、,9 3,3 3,5 3,9 4,2 4,8 5,5 6,3 8 975 P 0,5 0,6 0,8 0,9 1,l 1,3 1,3 1,3 1,4 1,6 1,8 1,8 2,l 2,l 2.57 I 2.90 I 3,30 3,53 3,35 - 3,91 3,73 - 4,221 4,80 5,46 I 6,25 I 8,OO I 9.65 2,43 126 I 3,12 4,041 4,62 5,28 1 6,03 I 7,78 I 9,43 I I I I I I I I I I I I I I I 1,63 2,18 2,39 2,92 3,101 3,58 4,17 I 4,88

    17、 1 6,20 I 7% 1,24 1,90 2,64 1,17 1,52 1,47 - 1,80 2,08 2,29 2,21 - 2,51 2,77 2,951 3,43 3,99 I 4,70 I 599 I 7,59 min. max. min. 0,69 C max. I I I I 1,12 1,73 2,Ol 2,41 2,67 2,841 3.30 3,86 I 455 I 5,84 I 7,44 1 ,o2 0,l - 1,60 O, 1 - 1,88 o, 1 - 2,08 o, 1 - 2,26 - O, 1 2,51 0,l - 2,69 3,12 & I I 0,6

    18、I 0,7 v TVD Fi 2s 3 7 - - 4,3 5 6,3 - 12 14 16 20 Numberc Io 3 - a Dimension ris a reference and has been provided for guidance only. The end may not be perfectly spherical but shall not be sharp to the touch. Length of incomplete thread. Former thread designation, for information only. I 3 Designation EXAMPLE A tapping screw thread with thread size ST3,5 is designated as follows: Tapping screw thread IS0 1478 - ST3,5 NOTE The type of thread end should be specified within the product designation, see product standards.


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