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    BS EN ISO 12474-2010 Hexagon socket head cap screws with metric fine pitch thread《带公制精细节距螺纹的内六角螺钉 》.pdf

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    BS EN ISO 12474-2010 Hexagon socket head cap screws with metric fine pitch thread《带公制精细节距螺纹的内六角螺钉 》.pdf

    1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 12474:2010Hexagon socket head cap screws with metric fine pitch threadLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 07:20, Uncontrolled Copy, (c) BS

    2、IBS EN ISO 12474:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO12474:2010.The UK participation in its preparation was entrusted to TechnicalCommittee FME/9/3, Fasteners - Product Standards.A list of organizations represented on this committee can beobt

    3、ained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 67622 2ICS 21.060.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This

    4、British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2011.Amendments issued since publicationDate Text affectedLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 07:20, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD NORME EUROPEN

    5、NE EUROPISCHE NORM EN ISO 12474 October 2010 ICS 21.060.10 English Version Hexagon socket head 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 E

    6、uropean Standard was approved by CEN on 30 September 2010. CEN members are bound to comply with 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 referen

    7、ces concerning such national standards may be obtained on application to the CEN Management Centre 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 in

    8、to its own language and notified to the CEN Management Centre has the same status as the official 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, Ita

    9、ly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, 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-100

    10、0 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12474:2010: ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 07:20, Uncontrolled Copy, (c) BSIBS EN ISO 12474:2010 EN ISO 12474:2010 (E) 3 Forewo

    11、rd 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 secretariat of which is held by DIN. This European St

    12、andard 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 to the possibility that some of the elements of th

    13、is 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 countries are bound to implement this European Sta

    14、ndard: 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, Slovenia, Spain, Sweden, Switzerland and the Unite

    15、d Kingdom. Endorsement notice The text of ISO 12474:2010 has been approved by CEN as a EN ISO 12474:2010 without any modification. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 07:20, Uncontrolled Copy, (c) BSIBS EN ISO 12474:2010ISO 12474:2010(E) ISO 2010 All rights reserved iii

    16、Contents Page Foreword iv Introduction.v 1 Scope1 2 Normative references1 3 Dimensions 2 4 Requirements and reference International Standards 6 5 Designation 6 6 Other specifications6 Annex A (informative) Masses.7 Bibliography8 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 07:20

    17、, Uncontrolled Copy, (c) BSIBS EN ISO 12474:2010ISO 12474:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally car

    18、ried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

    19、 ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare Interna

    20、tional Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the

    21、elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 12474 was prepared by Technical Committee ISO/TC 2, Fasteners, Subcommittee SC 10, Product standards for fasteners. Licensed Copy: Wang Bin, ISO/EXCHANG

    22、E CHINA STANDARDS, 03/06/2011 07:20, Uncontrolled Copy, (c) BSIBS EN ISO 12474:2010ISO 12474:2010(E) ISO 2010 All rights reserved vIntroduction This International Standard is based on ISO 21269, which has been withdrawn. The range of approval has been brought into line with the scope of ISO 898-1. I

    23、SO 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 from this International Standard because the smallest cross-sectional area for some sizes is not lo

    24、cated in the thread, but in the shear area between the head and the shank. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 07:20, Uncontrolled Copy, (c) BSIBS EN ISO 12474:2010Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 07:20, Uncontrolled Copy, (c) BSIBS EN I

    25、SO 12474:2010INTERNATIONAL STANDARD ISO 12474:2010(E) ISO 2010 All rights reserved 1Hexagon socket head cap screws with metric fine pitch thread 1 Scope This International Standard specifies the characteristics of hexagon socket head cap screws with metric fine pitch thread with nominal thread diame

    26、ters, 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 references, only the edition cited applies. For undated references, the lates

    27、t 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 ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy

    28、 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 and internal screw threads Medium quality ISO 965-3, ISO general purpose metr

    29、ic 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, screws and studs ISO 4042, Fasteners Electroplated coatings ISO 4753, Fasteners

    30、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 studs for general requirements ISO 6157-3, Fasteners Surface discontinuities Part

    31、 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 and nuts ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings

    32、Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 07:20, Uncontrolled Copy, (c) BSIBS EN ISO 12474:2010ISO 12474:2010(E) 2 ISO 2010 All rights reserved3 Dimensions See Figure 1 and Table 1. Symbols and descriptions of dimensions are specified in ISO 225. a) Hexagon socket head cap sc

    33、rew b) Permissible alternative form of socket c) Permissible alternative form of socket bottom Figure 1 (continued) Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 07:20, Uncontrolled Copy, (c) BSIBS EN ISO 12474:2010ISO 12474:2010(E) ISO 2010 All rights reserved 3d) Top and bottom

    34、 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. 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, mina

    35、re 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 Top edge of head may be rounded or chamfered as shown at the manufacturers discretion. hFor broached sockets which are at the maximum limit of

    36、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 screw with metric fine pitch thread Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 07:20, Uncontrolled Copy, (c) BSIBS EN ISO

    37、 12474:2010ISO 12474:2010(E) 4 ISO 2010 All rights reservedTable 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 ref. 28 32 36 40 44 52

    38、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 20,00 24,00 30,00 36,00 d

    39、smin. 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 20,00 24,00 30,00 36,00 k

    40、 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 12 15,5 19 v max. 0,8

    41、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 20,42 25 24,58 25,42 30

    42、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 Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 07:20, Uncontrolled Copy, (c) BSIBS EN ISO 12474:2010ISO 12474:2010(E) ISO 2010 All rights reserved 5Table 1 (continued) M8 1 M10

    43、 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) 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

    44、 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 11 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

    45、 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 38 120 119,3 120,7 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

    46、,5 78 46 66 160 159,2 160,8 106 116 95,5 108 85 100 70,5 88 56 76 180 179,2 180,8 115,5 128 105 120 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

    47、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.

    48、 Lengths below the dashed stepped line have values of lgand lsin accordance with the following equation: lg max= lnom b ls min= lg max 5 times the respective pitch of the coarse thread. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 03/06/2011 07:20, Uncontrolled Copy, (c) BSIBS EN ISO 12474:2010ISO 12474:2010(E) 6 ISO 2010 All rights reserved4 Requirements and reference International Standards See Table 2. Table 2 Requirements and reference International Standards Material Steel Stainless steel Non-ferrous metal General requirements International Standard ISO 8992 Toler


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