30163357 pdf BRITISH STANDARD BS EN 1665 1997 Incorporating corrigenda nos 1 and 2 Hexagon bolts with flange — Heavy series The European Standard EN 1665 1997 has the status of a British Standard ICS[.]
BRITISH STANDARD BS EN 1665:1997 Incorporating corrigenda nos and Hexagon bolts with flange — Heavy series The European Standard EN 1665:1997 has the status of a British Standard ICS 21.060.10 Confirmed May 2008 BS EN 1665:1997 National foreword This British Standard is the UK implementation of EN 1665:1997, incorporating corrigenda March 1998 and February 2007 The start and finish of text introduced or altered by corrigendum is indicated in the text by tags ˜™ Text altered by CEN corrigendum March 1998 is indicated by ˆ‰ and text altered by CEN corrigendum February 2007 is indicated in the text by Š‹ The UK participation in its preparation was entrusted to Technical Committee FME/9, Bolts, nuts and accessories A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Committee and comes into effect on 15 September 1997 © BSI 2007 Amendments issued since publication Amd No Date Comments 10158 December 1998 See national foreword 31 May 2007 See national foreword Corrigendum No 17148 The following BSI references Corrigendum No relate to the work on this standard: Committee reference FME/9 Draft for comment 94/713224 DC ISBN 580 28309 EUROPEAN STANDARD EN 1665 NORME EUROPÉENNE May 1997 EUROPÄISCHE NORM Incorporates corrigenda March 1998 and February 2007 ICS 21.060.10 Descriptors: Fasteners, screws, hexagonal head screws, dimensions, dimensional tolerances, characteristics, verification, designation English version Hexagon bolts with flange — Heavy series Vis tête hexagonale embase cylindro-tronconique — Série large Sechskantschrauben mit Flansch — Schwere Reihe This European Standard was approved by CEN on 1997-04-03 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 references concerning such national standards may be obtained on application to the Central Secretariat 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 Central Secretariat has the same status as the official versions CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1998 CEN — All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref No EN 1665:1997 E EN 1665:1997 Foreword This European Standard has been prepared by Technical Committee CEN/TC 185, Threaded and non-threaded mechanical fasteners and accessories, the secretariat 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 November 1997, and conflicting national standards shall be withdrawn at the latest by November 1997 According to the CEN/CENELEC Internal Regulations, the national standards organizations of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom Contents Foreword Scope Normative references Dimensions Requirements and reference European or International Standards Designation Annex A (normative) Gauging of hexagon flange heads Figure — Hexagon bolt with flange — Full shank (standard type) Figure — Hexagon bolt with flange — Reduced shank, type R (upon request) Figure — Hexagon bolt with flange — Underhead configuration (bearing area) Figure A.1 Table Table Table A.1 Page 3 7 4 8 © BSI 2007 EN 1665:1997 Scope This European Standard specifies characteristics of hexagon bolts with flange, heavy series, with threads from M5 up to and including M20 and with property classes 8.8, 10.9 and A2-70 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications These normative references are cited at the appropriate places in the text and the publications are listed hereafter For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision For undated references the latest edition of the publication referred to applies EN 26157-3, Fasteners — Surface discontinuities — Part 3: Bolts, screws and studs for special requirements (ISO 6157-3:1988) prEN ISO 898-1, Mechanical properties of fasteners — Part 1: Bolts, screws and studs (ISO/DIS 898-1:1996) prEN ISO 3506-1, Mechanical properties of corrosion-resistant stainless-steel fasteners — Part 1: Bolts, screws and studs (ISO/DIS 3506-1:1995) prEN ISO 4042, Fasteners — Electroplated coatings (ISO/DIS 4042:1996) prEN ISO 4753, Fasteners — Ends of parts with external metric ISO thread (ISO/DIS 4753:1997) prEN ISO 4759-1, Tolerances for fasteners — Part 1: Bolts, screws, studs and nuts — Product grades A, B and C (ISO/DIS 4759-1:1997) ISO 724, ISO general purpose metric screw threads — Basic dimensions ISO 888, Bolts, screw and studs — Nominal lengths, and thread lengths for general purpose bolts ISO 965-2, ISO general purpose metric screw threads — Tolerances — Part 2: Limits of sizes for general purpose bolt and nut threads — Medium quality ISO 3269, Fasteners — Acceptance inspection ISO 8992, Fasteners — General requirements for bolts, screws, studs and nuts Š3 Dimensions Dimensions shall be in accordance with Figure to Figure and Table NOTE Symbols and designations of dimensions are specified in EN 20225 1) The top of the head shall be either full form or indented at the manufacturer’s option and shall be either chamfered or rounded The minimum diameter of the chamfer circle or start of rounding shall be the maximum width across flats minus 15 % If the top of the head is indented, the periphery may be rounded 2) Edge contour optional 3) Chamfered end (see prEN ISO 4753) 4) ¶ = 15° to 30° 5) kw is the wrenching height; see the note to Table 6) Incomplete thread u < 2P Figure — Hexagon bolt with flange — Full shank (standard type) ‹ © BSI 2007 EN 1665:1997 Š other dimensions, see Figure a) Rounded or chamfered or conical b) d is approximately equal to the pitch diameter (rolling diameter) Figure — Hexagon bolt with flange — Reduced shank, type R (upon request) ‹ 1) c is measured at dw 2) $ = 15° to 25° 3) Maximum and minimum underhead fillet 4) Junction of fillet with bearing surface to be a smooth blend Figure — Hexagon bolt with flange — Underhead configuration (bearing area) © BSI 2007 EN 1665:1997 Table Dimensions in millimetres Thread (d) M5 0,8 pb b ref c da M6 M8 1,25 M10 1,5 M12 1,75 (M14)a M16 2 M20 2,5 c 16 18 22 26 30 34 38 46 d — — 28 32 36 40 44 52 e — — — — — — 57 65 1,1 1,2 1,5 1,8 2,1 2,4 5,7 6,8 9,2 11,2 13,7 15,7 17,7 22,4 6,2 7,5 10,0 12,5 15,2 17,7 20,5 25,7 dc max 11,8 14,2 18 22,3 26,6 30,5 35 43 ds max 5,00 6,00 8,00 10,00 12,00 14,00 16,00 20,00 4,82 5,82 7,78 9,78 11,73 13,73 15,73 19,67 dy max 5,5 6,6 8,8 10,8 12,8 14,8 17,2 21,6 dw 9,8 12,2 15,8 19,6 23,8 27,6 31,9 39,9 e 8,71 10,95 14,26 17,62 19,86 23,15 26,51 33,23 k max 5,8 6,6 8,1 10,4 11,8 13,7 15,4 18,9 kw 2,6 3,0 3,9 5,1 5,6 6,5 7,3 8,9 lf max 1,4 1,6 2,1 2,1 2,1 2,1 3,2 4,2 r1 0,2 0,25 0,4 0,4 0,6 0,6 0,6 0,8 r2 f max 0,3 0,4 0,5 0,6 0,7 0,9 1,2 r3 max 0,25 0,26 0,36 0,45 0,54 0,63 0,72 0,9 0,10 0,11 0,16 0,20 0,24 0,28 0,32 0,4 r4 ref 4,4 5,7 5,7 5,7 5,7 8,8 11,4 s max 8,00 10,00 13,00 16,00 18,00 21,00 24,00 30,00 7,78 9,78 12,73 15,73 17,73 20,67 23,67 29,67 max 0,15 0,20 0,25 0,30 0,35 0,45 0,50 0,65 0,5 0,05 0,10 0,15 0,15 0,20 0,25 0,30 Types F U v © BSI 2007 max EN 1665:1997 Table Thread (d) M5 M6 M8 M10 lgh M12 (M14)a M16 ls ls M20 ls and lgi ls lg ls lg max max ls lg ls lg max max ls lg nom max 10 9,71 10,29 12 11,65 12,35 16 15,65 16,35 20 19,58 20,42 25 24,58 25,42 30 29,58 30,42 10 14 12 35 34,5 35,5 15 19 12 17 6,75 13 40 39,5 40,5 20 24 17 22 11,75 18 6,5 14 45 44,5 45,5 25 29 22 27 16,75 23 11,5 19 6,25 15 50 49,5 50,5 30 34 27 32 21,75 28 16,5 24 11,25 20 55 54,4 55,6 32 37 26,75 33 21,5 29 16,25 25 11 60 59,4 60,6 37 42 31,75 38 26,5 34 21,25 30 65 64,4 65,6 36,75 43 31,5 39 70 69,4 70,6 41,75 48 80 79,4 80,6 51,75 58 90 89,3 100 lg lg max max max 16 — — ls lg max — — 21 17 — — 16 26 12 22 — — 26,25 35 21 31 17 27 6,5 19 36,5 44 31,25 40 26 36 22 32 11,5 24 46,5 54 41,25 50 36 46 32 42 21,5 34 90,7 56,5 64 51,25 60 46 56 42 52 31,5 44 99,3 100,7 66,5 74 61,25 70 56 66 52 62 41,5 54 110 109,3 110,7 71,25 80 66 76 62 72 51,5 64 120 119,3 120,7 81,25 90 76 86 72 82 61,5 74 130 129,2 130,8 80 90 76 86 65,5 78 140 139,2 140,8 90 100 86 96 75,5 88 150 149,2 150,8 96 106 85,5 98 160 159,2 160,8 106 116 95,5 108 180 179,2 180,8 200 199,075 200,925 NOTE a The bP If the product passes the gauging in Annex A, the requirements for dimensions e amd Kw are satisfied size in parentheses should be avoided if possible lengths lnom < 125 mm d For lengths 125 mm < lnom < 200 mm e For lengths lnom > 200 mm f Radius r2 applies both at the corners and at the flats of the hexagon Screws with lengths shown above the continuous thick line are threaded to head h i 135,5 148 is the pitch of the thread c For g 115,5 128 Reduced shank type (type R) only below the dashed line lg is the minimum grip length © BSI 2007 EN 1665:1997 Requirements and reference European or international Standards Designation Example Designation of a hexagon bolt with flange, heavy series, with thread M12, nominal The requirements given in Table apply length l = 80 mm, type F or U at the option of the If, in special cases, specifications other than those listed in this European Standard are required, they manufacturer, and property class 8.8: Hexagon bolt EN 1665 – M12 × 80 – 8.8 shall be selected, from existing European or international Standards, for example ISO 724, Example Designation of a hexagon bolt with ISO 888, prEN ISO 898-1, ISO 965-2, flange, heavy series, with thread M12, nominal prEN ISO 3506-1 length l = 80 mm, type F, and property class 8.8: Hexagon bolt EN 1665 – M12 × 80–F – 8.8 If, in special cases, a hexagon bolt with flange, heavy series, with reduced shank is required, the letter R shall be included in the designation Example Designation of a hexagon bolt with flange, heavy series, with thread M12, nominal length l = 80 mm, type F or U at the option of the manufacturer, with reduced shank (R) and property class 8.8: Hexagon bolt EN 1665 – M12 × 80– R — 8.8 Table Material Steel Stainless steel General requirements International standard ISO 8992 Thread Tolerance 6g International standards ISO 724, ISO 965-2 Property class 8.8, 10.9 A2-70 European Standards prEN ISO 898-1 prEN ISO 3506-1 Product grade A European Standard prEN ISO 4759-1 Mechanical properties Tolerances Finish Black oxide (thermic or chemical) Requirements for electroplating are covered in prEN ISO 4042 Plain If different electroplating requirements are desired or if requirements are needed for other finishes, they should be negotiated between customer and supplier Limits for surface discontinuities are covered in EN 26157-3 Acceptability © BSI 2007 For acceptance inspection ISO 3269 applies EN 1665:1997 Annex A (normative) Gauging of hexagon flange heads The head shall be gauged using two ring gauges, A and B, to demonstrate the coincidental acceptability of hexagon height, wrenching height, corner fill and width across corners Gauge A shall be placed over the hexagon and shall sit on the flange Gauge B shall be placed on the top of the head normal to the bolt axis The two gauges shall not be in contact Gauge A Gauge B NOTE Wa,min = etheoretical Wb,max = emin – 0,01 mm Ta,max = kw,min Figure A.1 Table A.1 Dimensions in millimetres Gauge A ˆ Wa Thread ‰ Gauge B max Ta max Wb max Tb min M5 9,25 9,24 2,60 2,59 8,70 8,69 M6 11,56 11,55 3,00 2,99 10,94 10,93 M8 15,02 15,01 3,90 3,89 14,25 14,24 M10 18,49 18,48 5,10 5,09 17,61 17,60 M12 20,79 20,78 5,60 5,59 19,85 19,84 M14 24,26 24,25 6,50 6,49 23,14 23,13 M16 27,72 27,71 7,30 7,29 26,50 26,49 M20 34,65 34,64 8,90 8,89 33,22 33,21 © BSI 2007 blank BS EN 1665:1997 BSI — British Standards Institution BSI is the independent national body responsible for preparing British Standards 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