1、BRITISH STANDARD BS EN 1662:1998 Incorporating corrigendum no. 1 Hexagon bolts with flange Small series (ISO/DIS 15071:1996, modified) The European Standard EN 1662:1997 has the status of a British Standard ICS 21.060.10 BS EN 1662:1998 This British Standard, having been prepared under the direction
2、 of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 April 1998 BSI 2007 ISBN 0 580 29329 7 National foreword This British Standard was published by BSI. It is the UK implementation of EN 1662:1997, incorporating corrigendum February
3、2007. The UK participation in its preparation was entrusted by Technical Committee FME/9, Bolts, nuts and accessories, to Subcommittee FME/9/6, General purpose fasteners and accessories. A list of organizations represented on FME/9/6 can be obtained on request to its secretary. This publication does
4、 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. WARNING The United Kingdom as a member of CEN is obliged to publish EN 1662:1997 as a British Stand
5、ard. However, attention is drawn to the fact that during the development of this European Standard the United Kingdom has consistently voted against its approval as a European Standard. The UK believes that the corresponding ISO Standard, ISO/DIS 15071:1996 should have been implemented as the Europe
6、an Standard. As far as the UK is concerned, it is dangerous and not acceptable to have a separate European Standard that differs from the corresponding ISO Standard by the across flats dimension for one size of fastener, all other requirements being identical between the two standards concerned. As
7、part of BSIs duty of care, we draw attention to users of this standard to our concerns that M12 bolts to this standard differ from similar fasteners conforming to ISO/DIS 15071:1996 in the across the flats dimension only. This is 16 mm in the European Standard and 15 mm in the ISO. BSI will assume n
8、o liability whatsoever for the failure on the part of any user of this standard not to consider this aspect. Precautions are urged to ensure that commingling of M12 bolts to the two standards concerned is avoided. Amendments issued since publication Amd. No. Date Comments 17055 Corrigendum No. 1 30
9、April 2007 Clause 3: Figure 2 replacedCEN European Committee for Standardization Comite Europe en de Normalisation Europa isches Komitee fu r Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN n
10、ational Members. Ref. No. EN 1662:1997 E EUROPEAN STANDARD EN 1662 NORME EUROPE ENNE EUROPA ISCHE NORM December 1997 ICS 21.060.10 Descriptors: Fasteners, screws, hexagonal head screws, dimensions, dimensional tolerances, characteristics, verification, designation English version Hexagon bolts with
11、flange Small series (ISO/DIS 15071:1996, modified) Vis a t e te hexagonale a embase cylindro-tronconique Se rie e troite (ISO/DIS 15071:1996, modifie e) Sechskantschrauben mit Flansch Leichte Reihe (ISO/DIS 15071:1996, modifiziert) This European Standard was approved by CEN on 1997-10-24. CEN member
12、s 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
13、 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 sam
14、e 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. Incorporating corrigendu
15、m February 2007Page 2 EN 1662:1997 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, ei
16、ther by publication of an identical text or by endorsement, at the latest by June 1998, and conflicting national standards shall be withdrawn at the latest by June 1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to im
17、plement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO/DIS 15071:
18、1996 was approved by CEN as a European Standard with agreed common modifications given as below. Bolts according to this European Standard correspond to those specified in the Draft International Standard ISO/DIS 15071:1996 with the exception that the width across flats for M12 is 16 mm (instead of
19、15 mm) and that the property class 9.8 was deleted. BSI 2007Page 3 EN 1662:1997 1 Scope This European Standard specifies the characteristics of hexagon flange bolts, small series, with threads from M5 up to and including M16 and with property classes 8.8, 10.9 and A2-70. 2 Normative references This
20、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 publicat
21、ions 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 26 157-3, Fasteners Surface discontinuities Part 3: Bolts, screws and studs for special requirements (ISO 6157-3:1988) prEN
22、 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 4
23、042:1996) 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
24、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 Gener
25、al requirements for bolts, screws, studs and nuts 3 Dimensions Dimensions shall be in accordance with Figures 1 to 3 and Table 1. NOTE Symbols and designation of dimensions are specified in EN 20225. 1) The top of the head shall be either full form or indented at the manufacturers option and shall b
26、e 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) b=1 58to 308. 5) k w
27、 is the wrenching height; see the note to Table 1. 6) Incomplete thread u# 2 P. Figure 1 Hexagon bolt with flange Full shank (standard type) BSI 2007Page 4 EN 1662:1997 other dimensions, see Figure 1 Rounded or chamfered or conical. d 2 is approximately equal to the pitch diameter (rolling diameter)
28、. Figure 2 Hexagon bolt with flange Reduced shank, type R (upon request) Type F without undercut (standard type) Type U with undercut (upon request or optional) 1) c is measured at d wm i n . 2) d =1 58to 258. 3) Maximum and minimum underhead fillet. 4) Junction of fillet with bearing surface to be
29、a smooth blend. Figure 3 Hexagon bolt with flange Underhead configuration (bearing area) a) b) BSI 2007Page 5 EN 1662:1997 Table 1 Dimensions in millimetres Thread (d) M5 M6 M8 M10 M12 (M14) 1) M16 P 2) 0,8 1 1,25 1,5 1,75 2 2 b ref. 3) 16 18 22 26 30 34 38 4) 28 32 36 40 44 5) 5 7 c min. 1 1,1 1,2
30、1,5 1,8 2,1 2,4 d a Types max. F U 5,7 6,8 9,2 11,2 13,7 15,7 17,7 6,2 7,5 10,0 12,5 15,2 17,7 20,5 d c max. 11,4 13,6 17 20,8 24,7 28,6 32,8 d s max. 5,00 6,00 8,00 10,00 12,00 14,00 16,00 min. 4,82 5,82 7,78 9,78 11,73 13,73 15,73 d v max. 5,5 6,6 8,8 10,8 12,8 14,8 17,2 d w min. 9,4 11,6 14,9 18,
31、7 22,5 26,4 30,6 e min. 7,59 8,71 10,95 14,26 17,62 19,86 23,15 k max. 5,6 6,9 8,5 9,7 12,1 12,9 15,2 k w min. 2,3 2,9 3,8 4,3 5,4 5,6 6,8 l f max. 1,4 1,6 2,1 2,1 2,1 2,1 3,2 r 1 min. 0,2 0,25 0,4 0,4 0,6 0,6 0,6 r 2 6) max. 0,3 0,4 0,5 0,6 0,7 0,9 1 r 3 max. 0,25 0,26 0,36 0,45 0,54 0,63 0,72 min.
32、 0,10 0,11 0,16 0,20 0,24 0,28 0,32 r 4 ref. 4 4,4 5,7 5,7 5,7 5,7 8,8 s max. 7,00 8,00 10,00 13,00 16,00 18,00 21,00 min. 6,78 7,78 9,78 12,73 15,73 17,73 20,67 v max. 0,15 0,20 0,25 0,30 0,35 0,45 0,50 min. 0,05 0,05 0,10 0,15 0,15 0,20 0,25 BSI 2007Page 6 EN 1662:1997 BSI 2007Page 7 EN 1662:1997
33、4 Requirements and reference European or International Standards The 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 72
34、4, ISO 888, prEN ISO 898-1, ISO 965-2, prEN ISO 3506-1. 5 Designation EXAMPLE 1 Designation of a hexagon bolt with flange, small series, with thread M12, nominal length l = 80 mm, type F or U at the option of the manufacturer, and property class 8.8: Hexagon bolt EN 1662 M123 80 8.8 EXAMPLE 2 Design
35、ation of a hexagon bolt with flange, small series, with thread M12, nominal length l = 80 mm, type F, and property class 8.8: Hexagon bolt EN 1662 M1238 0F8 . 8 If, in special cases, a hexagon bolt with flange, small series, with reduced shank is required, the letter R shall be included in the desig
36、nation. EXAMPLE 3 Designation of a hexagon bolt with flange, small 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 1662 M1238 0R8 . 8 Table 2 Material Steel Stainless steel General requir
37、ements International Standard ISO 8992 Thread Tolerance 6 g International Standards ISO 724, ISO 965-2 Mechanical properties Property class 8.8, 10.9 A2-70 European Standards prEN ISO 898-1 prEN ISO 3506-1 Tolerances Product grade A European Standard prEN ISO 4759-1 Finish Black oxide (thermic or ch
38、emical) Plain Requirements for electroplating in prEN ISO 4042. If different eletroplating 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 26 157-3. Acceptability
39、For acceptance inspection ISO 3269 applies. BSI 2007Page 8 EN 1662:1997 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
40、. Gauge A shall be placed over the hexagon and shall seat 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. 1 Gauge A 2 Gauge B NOTE W a, min = e theoretical W b, max = e min 2 0,01 mm T a, max = k w,min Figure A.1 Table A.
41、1 Dimensions in millimetres Thread Gauge A Gauge B W a T a W b T b max. min. max. min. max. min. min. M5 8,09 8,08 2,30 2,29 7,58 7,57 3 M6 9,25 9,24 2,90 2,89 8,70 8,69 3 M8 11,56 11,55 3,80 3,79 10,94 10,93 4 M10 15,02 15,01 4,30 4,29 14,25 14,24 4 M12 18,49 18,48 5,40 5,39 17,61 17,60 5 M14 20,79
42、 20,78 5,60 5,59 19,85 19,84 5 M16 24,26 24,25 6,80 6,79 23,14 23,13 6 BSI 2007blankBS EN 1662:1998 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Eur
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