DIN 479-2016 Square head bolts with short dog point《短螺栓末端的圆柱轴颈止端的方头螺栓》.pdf

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1、August 2016 English price group 6No 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 21.060.10!%co“2642976www.din.deDIN

2、 479Square head bolts with short dog point,English translation of DIN 479:2016-08Vierkantschrauben mit kurzem Zapfen,Englische bersetzung von DIN 479:2016-08Vis tte carre tton court,Traduction anglaise de DIN 479:2016-08SupersedesDIN 479:1985-02www.beuth.deDocument comprises 7 pagesDTranslation by D

3、IN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.03.17 DIN 479:2016-08 2 A comma is used as the decimal marker. Contents Page Foreword . 3 1 Scope 4 2 Normative references 4 3 Dimensions 5 4 Technical delivery conditions . 7 5 Designation 7 DIN 479:2

4、016-08 3 Foreword This standard has been prepared by Working Committee NA 067-00-02 AA Verbindungselemente mit metrischem Auengewinde of DIN-Normenausschuss Mechanische Verbindungselemente (DIN Standards Committee Fasteners). Attention is drawn to the possibility that some of the elements of this do

5、cument may be the subject of patent rights. DIN and/or DKE shall not be held responsible for identifying any or all such patent rights. Amendments This standard differs from DIN 479:1985-02 as follows: a) the title of the standard has been changed; b) the standard has been editorially revised; c) no

6、rmative references have been updated; d) in Figure 1, the thread ends have been brought in line with DIN EN ISO 4753 short dog point (SD); e) in Table 1, the value a1for thread size M8 has been changed from 4 to 3,75; f) in Table 2, a “0” has been added to the beginning of the value given for proper

7、ty class because square head bolts are not fully loadable in the tensile test due to the small surface area of the head. Previous editions DIN 479-1: 1926-10, 1942-05, 1953-05, 1961-03 DIN 479: 1968-03, 1968-07, 1985-02 DIN 479:2016-08 4 1 Scope This standard specifies requirements for square head b

8、olts with short dog point, of product grade A with metric coarse threads from M5 to M24. These screws are not fully loadable in tensile testing due to the small surface area of the head. Where, for special purposes, the bolts are to meet requirements differing from those specified in the present sta

9、ndard, e.g. with respect to nominal length or property class, the bolts shall be in compliance with the specifications of the relevant standards. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application

10、. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. DIN 76-1, Thread run-outs and thread undercuts Part 1: For ISO metric threads in accordance with DIN 13-1 DIN 267-2, Fasteners Technical d

11、elivery conditions Design and dimensional accuracy DIN 962, Bolts, screws, studs and nuts Designation, types and finishes DIN EN 26157-1, Fasteners Surface discontinuities Bolts, screws and studs subject to general requirements DIN EN ISO 898-1, Mechanical properties of fasteners made of carbon stee

12、l 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 ISO metric thread DIN EN ISO

13、 4759-1, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C DIN EN ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings DIN EN ISO 10684, Fasteners Hot dip galvanized coatings DIN ISO 965-1, ISO general purpose metric screw threads Tolerances Pa

14、rt 1: Principles and basic data DIN ISO 8992, Fasteners General requirements for bolts, screws, studs and nuts DIN 479:2016-08 5 3 Dimensions See Figure 1 and Table 1. (Reduced shank design permissible) Key u max. 2 P incomplete thread k minimum wrenching height (for this zone at least eminshall be

15、maintained) a1according to DIN 76-1 dpaccording to DIN EN ISO 4753 z1according to DIN EN ISO 4753 Thread end according to DIN EN ISO 4753 short dog point (SD) Figure 1 Dimensions (notation) DIN 479:2016-08 6 Table 1 Dimensions Dimensions in millimetres Thread size (d) M5 M6 M8 M10 M12 M16 M20 M24 Pa

16、0,8 1 1,25 1,5 1,75 2 2,5 3 a1max. 2,4 3 3,75 4,5 5,3 6 7,5 9 dpmax. = nominal size 3,5 4 5,5 7 8,5 12 15 18 min. 3,32 3,82 5,32 6,78 8,28 11,73 14,73 17,73 e max. = nominal size 6,5 8 10 13 17 21 22 27 28 32 min. 5,92 7,42 9,42 12,3 16,3 20,16 21,16 26,16 27,16 31 k Nominal size 5 6 8 10 12 16 20 2

17、2 min. 4,85 5,85 7,82 9,82 11,79 15,79 19,74 21,74 max. 5,15 6,15 8,18 10,18 12,21 16,21 20,26 22,26 k min. 3,4 4,1 5,5 6,9 8,3 11,1 13,8 15,2 r min. 0,2 0,25 0,4 0,4 0,6 0,6 0,8 0,8 s max. = nominal size 5 6 8 10 13 16b17b21b22b24 min. 4,82 5,82 7,78 9,78 12,73 15,73 16,73 20,67 21,67 23,67 z1min.

18、= nominal size 1,25 1,5 2 2,5 3 4 5 6 max. 1,5 1,75 2,25 2,75 3,25 4,3 5,3 6,3 l Mass (7,85 kg/dm3) kg per 1 000 units Nominal size min. max. 8 7,71 8,29 2,59 3,00 10 9,71 10,29 2,83 3,35 7,15 16 15,65 16,35 3,57 4,41 9,00 15,5 20 19,58 20,42 4,05 5,10 10,2 17,4 30,8 25 24,58 25,42 4,66 5,97 11,7 19

19、,8 34,4 30 29,58 30,42 5,26 6,84 13,3 22,3 38,0 35 34,5 35,5 5,87 7,71 14,9 24,8 41,6 40 39,5 40,5 6,48 8,58 16,4 27,3 45,2 87,6 45 44,5 45,5 9,44 18,0 29,7 48,8 94,3 50 49,5 50,5 19,5 32,2 52,4 101 176 55 54,4 55,6 21,1 34,7 56,0 107 186 259 60 59,4 60,6 37,2 59,6 114 197 273 70 69,4 70,6 66,8 127

20、217 303 80 79,4 80,6 74,0 140 238 333 90 89,3 90,7 81,2 153 258 362 100 99,3 100,7 167 279 392 110 109,3 110,7 180 299 421 120 119,3 120,7 193 320 451 140 139,2 140,8 361 510 Intermediate lengths should be avoided if possible. Lengths exceeding 140 mm shall be graded in 20 mm increments. For these l

21、engths, the permissible deviations specified in DIN EN ISO 4759-1 shall apply. aP = Thread pitch bWhen placing orders, the width across flats shall be given (see Clause 5). Preference shall be given to SW 16 and SW 21. DIN 479:2016-08 7 4 Technical delivery conditions See Table 2. Table 2 Technical

22、delivery conditions and reference standards Material Steel General requirements DIN ISO 8992 Thread Tolerance class 6gaStandard DIN ISO 965-1 Mechanical propertiesbProperty class (material) 05.6 05.8 08.8 Standard DIN EN ISO 898-1 Limit deviations, geometrical tolerances Product grade A Standard DIN

23、 EN ISO 4759-1 Surface finish Coating As processed. DIN EN ISO 4042 applies with regard to electroplating. DIN EN ISO 10683 applies with regard to non-electrolytically applied zinc flake coatings. DIN EN ISO 10684 applies with regard to hot dip galvanizing. DIN 267-2 applies with regard to surface r

24、oughness. DIN EN 26157-1 applies with regard to limits for surface discontinuities. Acceptance inspection DIN EN ISO 3269 aDepending on the selected surface finish, another tolerance position prior to the application of the coating is necessary, see DIN EN ISO 4042, DIN EN ISO 10683 and DIN EN ISO 1

25、0684, for example. bOther product grades or materials shall be subject to agreement. 5 Designation Designation of an M12 square head bolt with short dog point of length l (nominal size) = 40 mm and assigned to property class 05.6: Square head bolt DIN 479 M12 40 05.6 Designation of an M16 square hea

26、d bolt with short dog point of length l (nominal size) = 50 mm, width across flats 17 mm and assigned to property class 05.6: Square head bolt DIN 479 M16 50 SW 17 05.6 Designation of an M16 square head bolt with short dog point of length l (nominal size) = 70 mm, width across flats 16 mm and assigned to property class 08.8: Square head bolt DIN 479 M16 70 SW 16 08.8 See DIN 962 for supplementary order designations for special screw types and finishes.