1、BRITISH STANDARDBS EN 1665:1997Incorporating corrigenda nos. 1 and 2Hexagon bolts with flange Heavy seriesThe European Standard EN 1665:1997 has the status of a British StandardICS 21.060.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g
2、51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 1665:1997This British Standard was published under the authority of the Standards Committee and comes into effect on 15 September 1997 BSI 2007The following BSI references relate to the work on this stand
3、ard: Committee reference FME/9 Draft for comment 94/713224 DCISBN 0 580 28309 7National forewordThis 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
4、 text by tags . Text altered by CEN corrigendum March 1998 is indicated by and text altered by CEN corrigendum February 2007 is indicated in the text by .The UK participation in its preparation was entrusted to Technical Committee FME/9, Bolts, nuts and accessories. A list of organizations represent
5、ed 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.Amendments iss
6、ued since publicationAmd. No. Date Comments10158 Corrigendum No. 1December 1998 See national foreword17148 Corrigendum No. 231 May 2007 See national forewordEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 1665May 1997ICS 21.060.10 Incorporates corrigenda March 1998Descriptors: Fasteners, screws, h
7、exagonal head screws, dimensions, dimensional tolerances, characteristics, verification, designationEnglish versionHexagon bolts with flange Heavy seriesVis tte hexagonale embase cylindro-tronconique Srie largeSechskantschrauben mit Flansch Schwere ReiheThis European Standard was approved by CEN on
8、1997-04-03. CEN membersare bound to comply with the CEN/CENELEC Internal Regulations whichstipulate the conditions for giving this European Standard the status of anational standard without any alteration.Up-to-date lists and bibliographical references concerning such nationalstandards may be obtain
9、ed on application to the Central Secretariat or to anyCEN member.This European Standard exists in three official versions (English, French,German). A version in any other language made by translation under theresponsibility of a CEN member into its own language and notified to theCentral Secretariat
10、 has the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium,CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland,Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and United Kingdom.CENEuropean Commit
11、tee for StandardizationComit Europen de NormalisationEuropisches Komitee fr NormungCentral 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 Eand February 2007EN1665:199
12、72ForewordThis 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
13、 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
14、, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.ContentsPageForeword 21 Scope 32 Normative references 33 Dimensions 34 Requirements and reference European or International Standards 75 Designation 7Annex A (normative) Gaugin
15、g of hexagon flange heads 8Figure 1 Hexagon bolt with flange Full shank (standard type) 3Figure 2 Hexagon bolt with flange Reduced shank, type R (upon request) 4Figure 3 Hexagon bolt with flange Underhead configuration (bearing area) 4Figure A.1 8Table 1 5Table 2 7Table A.1 8 BSI 2007EN1665:199731 S
16、copeThis 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 A2-70.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other p
17、ublications. 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 rev
18、ision. 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/DI
19、S 898-1:1996)prEN ISO 3506-1, Mechanical properties of corrosion-resistant stainless-steel fasteners Part1: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/DI
20、S 4753:1997)prEN ISO 4759-1, Tolerances for fasteners Part1: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.
21、 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. 3 DimensionsDimensions shall be in a
22、ccordance with Figure 1 to Figure 3 and Table 1.NOTESymbols and designations of dimensions are specified in EN20225.1) The top of the head shall be either full form or indented at the manufacturers option and shall be either chamfered or rounded. The minimum diameter of the chamfer circle or start o
23、f rounding shall be the maximum width across flats minus15%. 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 305) kwis the wrenching height; see the note to Table 1.6) Incomplete thread u 200 mm.f Radius r2 app
24、lies both at the corners and at the flats of the hexagon.g Screws with lengths shown above the continuous thick line are threaded to head.h Reduced shank type (type R) only below the dashed line.i lg is the minimum grip length. BSI 2007EN1665:199774 Requirements and reference European or internation
25、al StandardsThe requirements given in Table 2 apply.If, in special cases, specifications other than those listed in this European Standard are required, they shall be selected, from existing European or international Standards, for example ISO 724, ISO888, prEN ISO 898-1, ISO 965-2, prEN ISO 3506-1.
26、5 DesignationExample 1. Designation of a hexagon bolt with flange, heavy series, with thread M12, nominal length l =80mm, type F or U at the option of the manufacturer, and property class 8.8:Hexagon bolt EN 1665 M12 80 8.8Example 2. Designation of a hexagon bolt with flange, heavy series, with thre
27、ad M12, nominal length l = 80mm, type F, and property class 8.8:Hexagon bolt EN 1665 M12 80F 8.8If, 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 3. Designation of a hexagon bolt with flange, heav
28、y series, with thread M12, nominal length l = 80mm, 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 8.8Table 2 Material Steel Stainless steelGeneral requirements International standard ISO 8992Thread Tolerance 6gInternational
29、 standards ISO 724, ISO 965-2Mechanical properties Property class 8.8, 10.9 A2-70European Standards prEN ISO 898-1 prEN ISO 3506-1Tolerances Product grade AEuropean Standard prEN ISO 4759-1Finish Black oxide (thermic or chemical)Requirements for electroplating are covered in prEN ISO 4042.PlainIf di
30、fferent 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 26157-3Acceptability For acceptance inspection ISO 3269 applies. BSI 2007EN1665:19978Annex A
31、(normative) Gauging of hexagon flange headsThe 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 s
32、hall be placed on the top of the head normal to the bolt axis. The two gauges shall not be in contact.Table A.1 1 Gauge A2 Gauge BNOTEWa,min = etheoretical Wb,max = emin 0,01 mmTa,max = kw,minFigure A.1 Dimensions in millimetresThreadGauge A Gauge BWa Ta Wb Tbmax. min. max. min. max. min. min.M5 9,2
33、5 9,24 2,60 2,59 8,70 8,69 3M6 11,56 11,55 3,00 2,99 10,94 10,93 3M8 15,02 15,01 3,90 3,89 14,25 14,24 4M10 18,49 18,48 5,10 5,09 17,61 17,60 4M12 20,79 20,78 5,60 5,59 19,85 19,84 5M14 24,26 24,25 6,50 6,49 23,14 23,13 5M16 27,72 27,71 7,30 7,29 26,50 26,49 6M20 34,65 34,64 8,90 8,89 33,22 33,21 6
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