1、July 2010 Translation by DIN-Sprachendienst.English price group 7No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 21
2、.060.10!$ldn“1736575www.din.deDDIN 940Studs Metal end 2,5 dEnglish translation of DIN 940:2010-07Stiftschrauben Einschraubende 2,5 dEnglische bersetzung von DIN 940:2010-07Goujons Ct implantation 2 ,5 dTraduction anglaise de DIN 940:2010-07SupersedesDIN 940:1995-02www.beuth.deDocument comprises page
3、sIn case of doubt, the German-language original shall be considered authoritative.903.11 DIN 940:2010-07 A comma is used as the decimal marker. Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Dimensions.5 4 Technical delivery conditions 7 5 Designation 8 Bibliography 9 2 DIN 940:2010-07
4、 Foreword This standard has been prepared by Working Committee NA 067-00-02 AA Verbindungselemente mit metrischem Auengewinde of the Normenausschuss Mechanische Verbindungselemente (Fasteners Standards Committee). The DIN 4000-160-5 tabular layout of product properties shall apply to studs covered i
5、n this standard. Amendments This standard differs from DIN 940:1995-02 as follows: a) the standard has been editorially revised; b) the scope of the standard has been rendered more precise; c) values for ds(diameter of unthreaded shank) have been specified (see Table 1 and Figure 1); d) the technica
6、l delivery conditions have been updated; e) by analogy with DIN EN ISO 225, symbols b1, b2und x1have been replaced by bm, b and x; f) a further example of designation has been added; g) tolerance class Sn 4 is now included in Table 2;. h) the recommendation to give preference to studs complying with
7、 DIN 949-2 has been dropped, as the standard was withdrawn in March 2009. Previous editions DIN 422: 1921-08, 1923-10 DIN 425: 1921-08, 1924-10 DIN 943-1: 1926-01, 1948-01 DIN 943-2: 1926-01 DIN 940-1: 1926-01, 1948-01, 1954-02, 1955-12 DIN 940-2: 1926-01 DIN 940: 1983-03, 1995-02 3 DIN 940:2010-07
8、1 Scope This standard specifies dimensions and technical delivery conditions for sizes M4 to M24 coarse pitch thread and M8 1 to M24 2 fine pitch thread studs, with a thread length at the stud end of approximately 2,5 d, of product grade A. Studs complying with this standard are intended for use mai
9、nly in light metals of low strength. 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
10、) applies. DIN 13-51, ISO general purpose metric screw threads Part 51: External screw threads for transition fits (former: screw threads for interference fit) Tolerances, limit deviations, limits of sizes DIN 267-2, Fasteners Technical delivery conditions Design and dimensional accuracy DIN 962, De
11、signation system for fasteners DIN EN 26157-3, Fasteners Surface discontinuities Bolts, screws and studs subject to special requirements DIN EN ISO 225, Fasteners Bolts, screws, studs and nuts Symbols and descriptions of dimensions DIN EN ISO 898-1, Mechanical properties of fasteners made of carbon
12、steel and alloy steel Part 1: Bolts, screws and studs with specified property classes Coarse thread and fine pitch thread DIN EN ISO 3269, Fasteners Acceptance inspection DIN EN ISO 4042, Fasteners Electroplated coatings DIN EN ISO 4753, Fasteners Ends of parts with external metric ISO thread DIN EN
13、 ISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C DIN ISO 261, ISO general purpose metric screw threads General plan DIN ISO 965-1, ISO general purpose metric screw threads Tolerances Part 1: Principles and basic data DIN ISO 8992, Fasteners Genera
14、l requirements for bolts, screws, studs and nuts 4 DIN 940:2010-07 3 Dimensions See Figure 1 and Table 1. Symbols and designations are given in DIN EN ISO 225. aSee Table 1 for details regarding type and marking of thread ends. bu 1,5 P Figure 1 Dimensions of stud with type FL thread end as in DIN E
15、N ISO 4753 (notation) 5 DIN 940:2010-07 Table 1 Dimensions Dimensions in millimetres d M4 M5 M6 (M7) M8 M81 M10 M101,25 M12 M121,25M121,5(M14) (M141,5) M16 M161,5 (M18) (M181,5) M20 M201,5 (M22) (M221,5) M24M242 bm10 13 15 18 20 25 30 35 40 45 50 55 60 ab bc14 20 16 22 18 24 20 26 2228 26 32 45 30 3
16、6 49 34 40 53 38 44 57 42 48 61 46 52 65 50 56 69 54 60 73 max4 5 6 7 8 10 12 14 16 18 20 22 24 dsmin.3,82 4,82 5,82 6,78 7,78 9,78 11,73 13,73 15,73 17,73 19,67 21,67 23,67x 1,75 2,0 2,5 2,5 3,2 3,8 4,3 5,0 5,0 6,3 6,3 6,3 7,5 l js 15 Mass (7,85 kg/dm3) kg/1 000 units 12 (14) 16 (18) 20 2,14 (22) 2
17、,61 4,46 25 2,90 4,92 7,26 (28) 3,20 5,38 7,93 11,8 30 3,40 5,69 8,37 12,4 16,3 35 3,89 6,46 9,48 13,9 18,3 30,7 40 4,38 7,23 10,6 15,4 20,2 33,8 51,9 45 8,00 11,7 16,9 22,2 36,9 56,3 80,9 50 8,77 12,8 18,4 24,2 39,9 60,8 86,9 122 55 13,9 20,0 26,2 43,0 65,2 93,0 130 167 60 15,0 21,5 28,1 46,1 69,7
18、99,0 138 177 232 65 23,0 30,1 49,2 74,1 105 146 187 244 311 70 24,5 32,1 52,3 78,5 111 154 197 257 326 394 75 34,1 55,4 83,0 117 161 207 269 341 412 80 36,0 58,4 87,4 123 169 217 281 356 430 (85) 61,5 91,9 129 177 227 294 371 447 90 64,6 96,3 135 185 237 306 386 465 (95) 67,7 101 141 193 247 318 401
19、 483 100 70,8 105 147 201 257 331 415 501 110 114 159 217 277 355 445 536 120 123 172 232 297 380 475 572 130 184 248 317 405 505 607 140 196 264 337 429 535 643 150 280 357 454 565 678 160 296 377 479 594 714 170 397 503 624 749 180 417 528 654 785 190 553 684 820 200 577 714 856 6 DIN 940:2010-07
20、Table 1 (continued) aFor l 125 mm bFor 125 mm 200 mm Lengths exceeding 200 mm shall be graded in 20 mm increments. Bracketed sizes and intermediate lengths should be avoided if possible. The zone between the continuous stepped lines indicates the range of commercial sizes of studs with coarse pitch
21、thread. Studs of sizes above this range cannot be manufactured with a length b as specified in the Table. In such cases, thread length b shall be approximately equal to l (x + 3 mm). For sizes above the dashed line, b + x 1,2 bm. To distinguish between the two ends, the nut end of these studs shall
22、be rounded (i.e. given an RN type thread end) as in DIN EN ISO 4753, unless its end face is already marked with the property class. 4 Technical delivery conditions See Table 2. Table 2 Technical delivery conditions Material Steel General requirements DIN ISO 8992 Tolerance Stud enda: Sk 6, Sn 4 Nut
23、end: 6 g Thread Standard DIN 13-51 DIN ISO 261 and DIN ISO 965-1 Property classb5.6, 8.8 Mechanical properties Standard DIN EN ISO 898-1 Product grade A Limit deviations and geometrical tolerances Standard DIN EN ISO 4759-1 Surface finish Property class 5.6: as processed. Property class 8.8: blacken
24、ed (thermally or chemically). DIN 267-2 applies with regard to surface roughness. DIN EN 26157-3 applies with regard to limits for surface discontinuities. DIN EN ISO 4042 applies with regard to electroplating. The limits of thread size shall also apply after coating. Acceptance inspection DIN EN IS
25、O 3269 applies with regard to acceptance inspection. aAs specified in DIN 267-2, the stud end thread shall be produced to tolerance class Sk 6, unless the stud is designated Fo (without interference-fit thread) (see Clause 5) or Sn 4. bOther property classes or materials shall be subject to agreemen
26、t. 7 DIN 940:2010-07 5 Designation Designation of a stud with an M12 interference-fit thread and with the stud end thread produced to tolerance class Sk 6, of nominal length l = 80 mm and property class 8.8: Stud DIN 940 M12 80 8.8 Designation of a stud with an M12 1,25 interference fit-thread and w
27、ith the stud end thread produced to tolerance class Sn 4, of nominal length l = 80 mm and property class 8.8: Stud DIN 940 M12 1,25 Sn 4 80 8.8 Designation of an M12 stud without interference-fit thread (Fo), of nominal length l = 80 mm and property class 8.8: Stud DIN 940 M12 Fo 80 8.8 Where studs
28、are to be supplied with a different thread pitch on either end, this shall be indicated in the designation, with the symbol for the thread of the stud end preceding that for the nut end, e.g.: Stud DIN 940 M12 M12 1,25 80 8.8 See DIN 962 for supplementary order designations for special bolt types and finishes. 8 DIN 940:2010-07 9 Bibliography DIN 949-2, Studs with metric interference thread MFS Part 2: Lengths of engagement 2,5 d (Type B)1)DIN 4000-160, Tabular layout of product properties Part 160: Fasteners with external thread 1) Standard withdrawn.
