1、January 2011 Translation by DIN-Sprachendienst.English price group 10No 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).IC
2、S 21.060.10!$m0“1741356www.din.deDDIN EN ISO 12474Hexagon socket head cap screws with metric fine pitch thread(ISO 12474:2010)English translation of DIN EN ISO 12474:2011-01Zylinderschrauben mit Innensechskant mit Metrischem Feingewinde (ISO 12474:2010)Englische bersetzung von DIN EN ISO 12474:2011-
3、01Vis tte cylindrique six pans creux pas fin (ISO 12474:2010)Traduction anglaise de DIN EN ISO 12474:2011-01SupersedesDIN EN ISO 21269:2004-06,withdrawn 2007-07www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1602.11 DIN EN ISO 1247
4、4:2011-01 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 2 “Fasteners” in collaboration with Technical Committee CEN/TC 185 “Fasteners” (both secretariats are held by DIN, Germany). The responsible German body involved in its
5、preparation was the Normenausschuss Mechanische Verbindungselemente (Fasteners Standards Committee), Working Committee NA 067-00-02 AA Verbindungs-elemente mit metrischem Auengewinde. This standard has been prepared as an alternative to DIN EN ISO 21269 (successor to DIN 912:1983-12 for fine pitch t
6、hreads), which was withdrawn in December 2006. Users of this standard should take note of the following: For strength values above 1 200 MPa, it is recommended to use screws of property class 12.9 (see Table 2). The DIN 4000-160-2 tabular layout of article characteristics shall apply to screws cover
7、ed in this standard. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 225 DIN EN ISO 225 ISO 261 DIN ISO 261 ISO 898-1 DIN EN ISO 898-1 ISO 965-2 DIN ISO 965-2 ISO 965-3 DIN ISO 965-3 ISO 3269 DIN EN ISO 3269 ISO 3506-1 DIN EN ISO 3506-1
8、 ISO 4042 DIN EN ISO 4042 ISO 4753 DIN EN ISO 4753 ISO 4759-1 DIN EN ISO 4759-1 ISO 6157-1 DIN EN 26157-1 ISO 6157-3 DIN EN 26157-3 ISO 8839 DIN EN 28839 ISO 8992 DIN ISO 8992 ISO 10683 DIN EN ISO 10683 ISO 23429 DIN EN ISO 23429 Amendments This standard differs from DIN EN ISO 21269:2004-06 (withdr
9、awn 2007-07) as follows: a) threads above M36 3 have been deleted; b) property class 12.9 has been added; c) a further alternative form of socket bottom has been added. Previous editions DIN EN ISO 21269: 2004-06 DIN EN ISO 12474:2011-01 3 National Annex NA (informative) Bibliography DIN 4000-160, T
10、abular layout of product properties Part 160: Fasteners with external thread DIN EN 26157-1, Fasteners Surface discontinuities Bolts, screws and studs subject to general requirements DIN EN 26157-3, Fasteners Surface discontinuities Bolts, screws and studs subject to special requirements DIN EN 2883
11、9, Mechanical properties of fasteners Nonferrous metal bolts, screws, studs and nuts DIN EN ISO 225, Fasteners Bolts, screws, studs and nuts Symbols and designations of dimensions DIN EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and stud
12、s with specified property classes Coarse thread and fine pitch thread DIN EN ISO 3269, Fasteners Acceptance inspection DIN EN ISO 3506-1, Mechanical properties of corrosion-resistant stainless steel fasteners Part 1: Bolts, screws and studs DIN EN ISO 4042, Fasteners Electroplated coatings DIN EN IS
13、O 4753, 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 23429, Gauging of hexagon sockets DIN IS
14、O 261, ISO general purpose metric screw threads General plan DIN ISO 965-2, ISO general purpose metric screw threads Tolerances Part 2: Limits of sizes for general purpose external and internal screw threads Medium quality DIN ISO 965-3, ISO general purpose metric screw threads Tolerances Part 3: De
15、viations for constructional threads DIN ISO 8992, Fasteners General requirements for bolts, screws, studs and nuts DIN EN ISO 12474:2011-01 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12474 October 2010 ICS 21.060.10 English Version Hexagon socket head
16、 cap screws with metric fine pitch thread (ISO 12474:2010) Vis tte cylindrique six pans creux pas fin (ISO 12474:2010) Zylinderschrauben mit Innensechskant mit Metrischem Feingewinde (ISO 12474:2010) This European Standard was approved by CEN on 30 September 2010. CEN members are bound to comply wit
17、h the CEN/CENELEC 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 standards may be obtained on application to the CEN Management Ce
18、ntre or to any CEN member. This European Standard exists 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 CEN Management Centre has the same status as the offic
19、ial versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slov
20、akia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide
21、 for CEN national Members. Ref. No. EN ISO 12474:2010: EContents DIN EN ISO 12474:2011-01 EN ISO 12474:2010 (E) 2 Page Foreword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Dimensions.6 4 Requirements and reference International Standards.10 5 Designation 10 6 Other specifications 10 Annex
22、A (informative) Masses .11 Bibliography 12 Foreword The text of ISO 12474:2010 has been prepared by Technical Committee ISO/TC 2 “Fasteners” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 12474:2010 by Technical Committee CEN/TC 185 “Fasteners” the secr
23、etariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2011, and conflicting national standards shall be withdrawn at the latest by April 2011. Attention is drawn t
24、o the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following c
25、ountries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, S
26、lovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 12474:2010 has been approved by CEN as a EN ISO 12474:2010 without any modification. DIN EN ISO 12474:2011-01 EN ISO 12474:2010 (E) 3 Introduction This International Standard is based on ISO 21269, which h
27、as been withdrawn. The range of approval has been brought into line with the scope of ISO 898-1. ISO 21269 specified also fine pitch thread screws of d W M42 3. Certain dimensions of d W M42 3 were considered as screws with reduced loadability. Therefore, the dimensions d W M42 3 have been omitted f
28、rom this International Standard because the smallest cross-sectional area for some sizes is not located in the thread, but in the shear area between the head and the shank. DIN EN ISO 12474:2011-01 EN ISO 12474:2010 (E) 4 1 Scope This International Standard specifies the characteristics of hexagon s
29、ocket head cap screws with metric fine pitch thread with nominal thread diameters, d, from 8 mm up to 36 mm and product grade A. For approximate masses of screws, see Annex A. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated
30、references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 225, Fasteners Bolts, screws, studs and nuts Symbols and descriptions of dimensions ISO 261, ISO general purpose metric screw threads General plan
31、 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 ISO 965-2, ISO general purpose metric screw threads Tolerances Part 2: Limits of sizes for general purpose external
32、and internal screw threads Medium quality ISO 965-3, ISO general purpose metric screw threads Tolerances Part 3: Deviations for constructional screw threads ISO 3269, Fasteners Acceptance inspection ISO 3506-1, Mechanical properties of corrosion-resistant stainless steel fasteners Part 1: Bolts, scr
33、ews and studs ISO 4042, Fasteners Electroplated coatings ISO 4753, Fasteners Ends of parts with external ISO metric thread ISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C ISO 6157-1, Fasteners Surface discontinuities Part 1: Bolts, screws and stud
34、s for general requirements ISO 6157-3, Fasteners Surface discontinuities Part 3: Bolts, screws and studs for special requirements ISO 8839, Mechanical properties of fasteners Bolts, screws, studs and nuts made of non-ferrous metals ISO 8992, Fasteners General requirements for bolts, screws, studs an
35、d nuts ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings DIN EN ISO 12474:2011-01 EN ISO 12474:2010 (E) 5 3 Dimensions See Figure 1 and Table 1. Symbols and descriptions of dimensions are specified in ISO 225. a) Hexagon socket head cap screw b) Permissible alternative form of so
36、cket c) Permissible alternative form of socket bottom Figure 1 (continued) DIN EN ISO 12474:2011-01 EN ISO 12474:2010 (E) 6 d) Top and bottom edge of the head e) Broached socket Key lf maximum underhead fillet= 1,7 rmaxrmax= a,max s, max2ddrminsee Table 1 aPoint chamfered in accordance with ISO 4753
37、. bIncomplete thread u u 2 P. c A slight rounding or countersink at the mouth of the socket is permissible. d dsapplies if values of ls, minare specified. e Flat area, use for indented marking permitted. fBottom edge of head may be rounded or chamfered, but in every case shall be free of burrs. g To
38、p edge of head may be rounded or chamfered as shown at the manufacturers discretion. hFor broached sockets which are at the maximum limit of size, the overcut resulting from drilling shall not exceed one third of the length of any flat of the socket which is e/2. Figure 1 Hexagon socket head cap scr
39、ew with metric fine pitch thread DIN EN ISO 12474:2011-01 EN ISO 12474:2010 (E) 7 Table 1 Dimensions for hexagon socket head cap screw with metric fine pitch thread Dimensions in millimetres M8 1 M10 1 M12 1,5 M16 1,5 M20 1,5 M24 2 M30 2 M36 3 Thread, d Pa (M10 1,25) (M12 1,25) (M14 1,5) (M20 2) bb
40、ref. 28 32 36 40 44 52 60 72 84 damax. 9,2 11,2 13,7 15,7 17,7 22,4 26,4 33,4 39,4 max.c 13,00 16,00 18,00 21,00 24,00 30,00 36,00 45,00 54,00 max.d 13,27 16,27 18,27 21,33 24,33 30,33 36,39 45,39 54,46 dkmin. 12,73 15,73 17,73 20,67 23,67 29,67 35,61 44,61 53,54 max. 8,00 10,00 12,00 14,00 16,00 20
41、,00 24,00 30,00 36,00 dsmin. 7,78 9,78 11,73 13,73 15,73 19,67 23,67 29,67 35,61 dwmin. 12,33 15,33 17,23 20,17 23,17 28,87 34,81 43,61 52,54 ee,f min.6,863 9,149 11,429 13,716 15,996 19,437 21,734 25,154 30,854 lfmax. 1,02 1,02 1,45 1,45 1,45 2,04 2,04 2,89 2,89 max. 8,00 10,00 12,00 14,00 16,00 20
42、,00 24,00 30,00 36,00 k min. 7,64 9,64 11,57 13,57 15,57 19,48 23,48 29,48 35,38 r min. 0,4 0,4 0,6 0,6 0,6 0,8 0,8 1 1 nom. 6 8 10 12 14 17 19 22 27 max. 6,14 8,175 10,175 12,212 14,212 17,23 19,275 22,275 27,275 sf min. 6,02 8,025 10,025 12,032 14,032 17,05 19,065 22,065 27,065 t min. 4 5 6 7 8 10
43、 12 15,5 19 v max. 0,8 1 1,2 1,4 1,6 2 2,4 3 3,6 w min. 3,3 4 4,8 5,8 6,8 8,6 10,4 13,1 15,3 Shank dimensions lsand lglglslglslglslglslglslglslglslglslglslgnom. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max.12 11,65 12,35 16 15,65 16,35 20 19,58 2
44、0,42 25 24,58 25,42 30 29,58 30,42 35 34,5 35,5 40 39,5 40,5 5,75 12 45 44,5 45,5 10,75 17 5,5 13 50 49,5 50,5 15,75 22 10,5 18 DIN EN ISO 12474:2011-01 EN ISO 12474:2010 (E) 8 Table 1 (continued) M8 1 M10 1 M12 1,5 M16 1,5 M20 1,5 M24 2 M30 2 M36 3 Thread, d Pa (M10 1,25) (M12 1,25) (M14 1,5) (M20
45、2) Shank dimensions lsand lglglslglslglslglslglslglslglslglslglslgnom. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max.55 54,4 55,6 20,75 27 15,5 23 10,25 19 60 59,4 60,6 25,75 32 20,5 28 15,25 24 10 20 65 64,4 65,6 30,75 37 25,5 33 20,25 29 15 25 1
46、1 21 70 69,4 70,6 35,75 42 30,5 38 25,25 34 20 30 16 26 80 79,4 80,6 45,75 52 40,5 48 35,25 44 30 40 26 36 15,5 28 90 89,3 90,7 50,5 58 45,25 54 40 50 36 46 25,5 38 15 30 100 99,3 100,7 60,5 68 55,25 64 50 60 46 56 35,5 48 25 40 110 109,3 110,7 65,25 74 60 70 56 66 45,5 58 35 50 20,5 38 120 119,3 12
47、0,7 75,25 84 70 80 66 76 55,5 68 45 60 30,5 48 16 36 130 129,2 130,8 80 90 76 86 65,5 78 55 70 40,5 58 26 46 140 139,2 140,8 90 100 86 96 75,5 88 65 80 50,5 68 36 56 150 149,2 150,8 96 106 85,5 98 75 90 60,5 78 46 66 160 159,2 160,8 106 116 95,5 108 85 100 70,5 88 56 76 180 179,2 180,8 115,5 128 105
48、 120 90,5 108 76 96 200 199,1 200,9 135,5 148 125 140 110,5 128 96 116 NOTE Sizes in brackets should be avoided if possible. aP is the pitch of the thread. bFor lengths below the dashed stepped line. cFor plain heads. dFor knurled heads. eemin= 1,14 sminfCombined gauging of socket dimensions e and s, see ISO 23429. gThe range of commercial lengths is between the bold stepped lines. Lengths above the dashed stepped line are threaded to the head within 3 times the respective pitch of the coarse thread. Lengths below the dashed stepped line
