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!%cn“2642975www.din.deDIN
2、 478Square head bolts with collar,English translation of DIN 478:2016-08Vierkantschrauben mit Bund,Englische bersetzung von DIN 478:2016-08Vis tte carre embase cylindrique,Traduction anglaise de DIN 478:2016-08SupersedesDIN 478:1985-02www.beuth.deDocument comprises 7 pagesDTranslation by DIN-Sprache
3、ndienst.In case of doubt, the German-language original shall be considered authoritative.03.17 DIN 478:2016-08 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 478:2016-08 3 F
4、oreword 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 document may
5、 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 478:1985-02 as follows: a) normative references have been updated; b) the standard has been editorially revised; c) in Figure 1, the
6、 thread ends have been brought in line with DIN EN ISO 4753 end chamfered (CH); d) in Table 1, the bold, stepped line that was included in the area dealing with weight in the March 1968 edition has been added back in. Previous editions DIN 478-1: 1926-10, 1947-10, 1953-06 DIN 478: 1968-03, 1985-02 D
7、IN 478:2016-08 4 1 Scope This standard specifies requirements for square head bolts with collar, of product grade A with metric coarse threads from M5 to M24. Where, for special purposes, the bolts are to meet requirements differing from those specified in the present standard, e.g. with respect to
8、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. For dated references, only
9、 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 delivery conditions Design an
10、d 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 225, Fasteners Bolts, screws, studs and nuts Symbols and descriptions of dimensions DIN E
11、N ISO 898-1, Mechanical properties of fasteners made of carbon 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,
12、 Fasteners Ends of parts with external ISO metric thread DIN EN ISO 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 DI
13、N ISO 965-1, ISO general purpose metric screw threads Tolerances Part 1: Principles and basic data DIN ISO 8992, Fasteners General requirements for bolts, screws, studs and nuts DIN 478:2016-08 5 3 Dimensions See Figure 1 and Table 1. Symbols and their descriptions are specified in DIN EN ISO 225. K
14、ey k minimum wrenching height (for this zone at least eminshall be maintained) u max. 2 P incomplete thread x1according to DIN 76-1 1 thread end according to DIN EN ISO 4753 end chamfered (CH) a rounded Figure 1 Dimensions (notation) DIN 478:2016-08 6 Table 1 Dimensions Dimensions in millimetres Thr
15、ead size (d) M5 M6 M8 M10 M12 M16 M20 M24 Pa0,8 1 1,25 1,5 1,75 2 2,5 3 0+2P l 125 mm16 18 22 26 30 38 46 54 l 125 mm 32 36 44 52 60 c Nominal size 2 2 2 3 3 4 5 6 min. 1,88 1,88 1,88 2,88 2,88 3,85 4,85 5,85 max. 2,12 2,12 2,12 3,12 3,12 4,15 5,15 6,15 damax. 5,7 6,8 9,2 11,2 13,7 17,7 22,4 26,4 dc
16、max. = nominal size 9,5 10,5 13,5 16,5 19,5 25 31 36 min. 8,92 9,8 12,8 15,8 18,66 24,16 30 35 dsmax. = nominal size 5 6 8 10 12 16 20 24 min. 4,82 5,82 7,78 9,78 11,73 15,73 19,67 23,67 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 No
17、minal size 7 8 10 13 15 20 25 28 min. 6,82 7,82 9,82 12,78 14,78 19,74 24,74 27,74 max. 7,18 8,18 10,18 13,22 15,22 20,26 25,26 28,26 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 15,7
18、3 16,73 20,67 21,67 23,67 x1max. 2 2,5 3,2 3,8 4,3 5 6,3 7,5 l Mass (7,85 kg/dm3) kg per 1 000 units Nominal size min. max. 10 9,71 10,29 3,19 4,57 16 15,65 16,35 3,94 5,65 10,8 20 19,58 20,42 4,60 6,35 12,1 21,9 25 24,58 25,42 5,37 7,45 13,7 24,4 39,5 30 29,58 30,42 6,74 8,55 15,7 27,5 43,0 88,0 35
19、 34,5 35,5 9,65 17,7 30,6 47,5 95,0 172 240 40 39,5 40,5 10,9 19,7 33,7 52,0 102 182 255 45 44,5 45,5 21,7 36,8 56,5 110 193 270 50 49,5 50,5 39,9 61,0 118 203 285 55 54,4 55,6 43,0 65,5 126 215 300 60 59,4 60,6 46,1 70,0 134 227 315 70 69,4 70,6 79,0 150 252 350 80 79,4 80,6 88,0 176 277 385 90 89,
20、3 90,7 97,0 192 302 420 100 99,3 100,7 208 327 455 110 109,3 110,7 224 352 490 120 119,3 120,7 240 377 525 140 139,2 140,8 272 427 595 160 159,2 160,8 477 665 180 179,2 180,8 527 735 Intermediate lengths should be avoided if possible. Lengths exceeding 180 mm shall be graded in 20 mm increments. For
21、 these lengths, the permissible deviations specified in DIN EN ISO 4759-1 shall apply. For screws above the stepped line, threaded nearly to the head; reduced shank design permissible. aP = Thread pitch bWhen placing orders, the width across flats shall be given (see Clause 5). Preference shall be g
22、iven to SW 16 and SW 21. DIN 478:2016-08 7 4 Technical delivery conditions See Table 2. Table 2 Technical delivery conditions and reference standards Material Steel General requirements DIN ISO 8992 Thread Tolerance class 6gaStandard DIN ISO 965-1 Mechanical propertiesbProperty class (material) 5.6;
23、 5.8; 8.8 Standard DIN EN ISO 898-1 Limit deviations, geometrical tolerances Product grade A Standard DIN 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
24、. DIN EN ISO 10684 applies with regard to hot dip galvanizing. DIN 267-2 applies with regard to surface roughness. 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 pri
25、or to the application of the coating is necessary, see DIN EN ISO 4042, DIN EN ISO 10683 and DIN EN ISO 10684, for example. bOther product grades or materials shall be subject to agreement. 5 Designation Designation of an M12 square head bolt with collar of length l (nominal size) = 40 mm and assign
26、ed to property class 5.6: Square head bolt DIN 478 M12 40 5.6 Designation of an M16 square head bolt with collar of length l (nominal size) = 50 mm, width across flats 16 mm and assigned to property class 8.8: Square head bolt DIN 478 M12 50 SW 16 8.8 See DIN 962 for supplementary order designations for special screw types and finishes.
