1、DEUTSCHE NORM Februarv 1998 DIN EN 1664 Prevailing torque type all-metal hexagon nuts with flange (IS0 7044 : 1997, modified) English version of DIN EN 1664 ICs 21.060.20 This standard, together Descriptors: Fasteners, hexagon nuts, properties. Sechskantmuttern mit Klemmteil und Flansch - Ganzmetall
2、muttern (IS0 7044 : 1997, modifiziert) with DIN EN 1667, February 1998 edition, supersedes DIN 6927, November 1983 edition. European Standard EN 1664 : 1997 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been prepared by CEN/TC 185. The r
3、esponsible German body involved in its preparation was the Normenausschu Mechanische Verbindungselemenfe (Fasteners Standards Committee). The DIN Standards corresponding to the EuropeanAnternational Standards referred to in clause 2 of the EN are as follows: EN IS0 2320 IS0 3269 DIN IS0 3269 IS0 899
4、2 DIN IS0 8992 The DIN 4000-2-7 tabular layout of article characteristics shall apply to the nuts covered in this standard. DIN EN IS0 2320 Amendments DIN 6927, November 1983 edition, has been superseded by the specifications of EN 1664. Previous edition DIN 6927: 1983-1 1. National Annex NA Standar
5、ds referred to (and not included in Normative references) DIN 4000-2 Tabular layouts of article characteristics for bolts, screws and nuts DIN EN IS0 2320 Prevailing torque type steel hexagon nuts - Mechanical and performance properties (IS0 2320 : 1997) EN comprises 7 pages. No pari of this standar
6、d may be reproduced without the prior permission of Ref. No. DIN EN 1664: 1998-0 V Deutsches Institut fr Nonung e. V., Berlin. Luth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). English price group 07 Sales No . . 1107 07.98 COPYRIGHT DIN DEUTSCHES I
7、nstitut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesCOPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1664 December 1997 ICs 21.060.20 Descriptors: Fasteners, hexagon nuts, pro
8、perties. English version Prevai I i ng torque type al I- meta nuts with flange (IS0 7044 : 1997, modified) hexagon Ecrous hexagonaux embase, Sechskantmuttern mit Klemmteil und autofreins -tout mtal Flansch - Ganzmetallmuttern (IS0 7044 : 1997, modifie) (IS0 7044 : 1997, modifiziert) This European St
9、andard was approved by CEN on 1997-1 0-24. CEN members are bound to comply with the CENKENELEC 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 su
10、ch national stand- ards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exist 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 languag
11、e and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Swe
12、den, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, 8-1050 Brussels O 1997. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN
13、 national members. Ref. No. EN 1664 : 1997 E COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 2 EN 1664 : 1997 Foreword This European Standard has been prepared by Technical Committee CEN/TC 185 “Threaded and non-threaded mechanical fasteners an
14、d 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 June 1998, and conflicting national standards shall be withdrawn at the latest by June 1998
15、. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Po
16、rtugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard IS0 7044: 1997 was approved by CEN as a European Standard with agreed common modifications given as below. The dimensions of nuts correspond to those given in EN 1661 plus prevailing
17、torque feature. Nuts according to this European Standard corresponds to those specified in the International Standard IS0 7044 with the exception that the width across flats for M1 O is 16 mm (instead of 15 mm) an.d that the property class 9 was deleted. COPYRIGHT DIN DEUTSCHES Institut Fur Normung
18、E.V.- EnglishLicensed by Information Handling ServicesPage 3 EN 1664 : 1997 1 Scope This European Standard specifies the characteristics of prevailing torque type all-metal hexagon nuts with flange and threads from M5 up to M20 inclusive, in product grade A for threads up to and including Ml 6 and p
19、roduct grade B for threads above M16 and with property classes 8, 1 O and 12. 2 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
20、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 493 Fasteners - S
21、urface discontinuities - Nuts EN IS0 2320 Prevailing torque type steel hexagon nuts - Mechanical and performance properties (ISOIDIS 2320 : 1994) prEN IS0 4042 Fasteners - Electroplated coatings ISO/DIS 4042 : 19961 prEN IS0 4759-1 Tolerances for fasteners - Part 1: Bolts, screws, studs and nuts - P
22、roduct grades A, B and C (ISO/DIS 4759-1 : 1997) IS0 724 IS0 general purpose metric screw threads - Basic dimensions IS0 965-2 IS0 general purpose metric screw threads - Tolerances - Part 2: Limits of sizes for general purpose bolt and nut threads - Medium quality IS0 3269 Fasteners - Acceptance ins
23、pection IS0 8992 Fasteners - General requirements for bolts, screws, studs and nuts COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 4 EN 1664 : 1997 3 Dimensions Dimensions shall be in accordance with figure 1 and table 1. NOTE 1 : Symbols and
24、designations of dimensions are specified in EN 20225. X 6) 1 ) Prevailing torque element, shape optional. 2) m, is the wrenching height; see note to table 1 416 = 15“ t025 5) c is measured at d,. 6) Edge contour optional. 31 e = 90- to 120- Figure 1 COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.-
25、 EnglishLicensed by Information Handling ServicesPage 5 EN 1664 : 1997 Table 1 Dimensions in millimetres MI6 M 20 2.5 2,4 3 16,O 20,o 17.3 21,6 34,5 42,8 31,9 39,9 26,75 32.95 18,3 22,4 20,3 17,2 15,3 18,7 8.9 10,7 30.00 24,OO 23,67 29,16 0,96 1,2 ) The size in brackets should be avoided if possible
26、. P is the pitch of the thread. 3, Radius r applies both at the corners and the flats of the hexagon. NOTE: If the product passes the gauging given in annex A, the requirements for dimensions e, c and m, are satisfied. COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information
27、 Handling ServicesPage 6 EN 1664 : 1997 8 dSM16 d M16 style 1 style 2 4 Requirements and reference European or Internationai Standards 10 12 style 1 style 2 The requirements given in table 2 apply. If, in special cases, specifications other than those listed in this European Standard are required, t
28、hey shall be selected, from existing European or International Standards, for example IS0 724, IS0 965-2, prEN IS0 2320, prEN IS0 4759-1. Table 2 Material General requirements International Standard Thread Tolerance International Standards Property class Mechanical and Style decisive for performance
29、 properties mechanical properties) European Standard Product grade Tolerances European Standard Finish Acceptability Steel, IS0 8992 6H IS0 724, IS0 965-2 Ford I M 16: A Ford M 16: B prEN IS0 4759-1 As processed Requirements for electroplated coatings are covered in prEN IS0 4042. If different elect
30、roplating 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 493. For acceptance inspection IS0 3269 applies. ) Based on the nut height (dimension h,) nuts to this st
31、andard are of style 2. However, since for style 2 prEN IS0 2320 does not specify mechanical properties for all property classes and sizes as specified in this standard, in some cases nuts have to be tested according to style 1. 5 Designation EXAMPLE: Designation of a prevailing torque type hexagon a
32、ll-metal nut with flange, thread M12 and property class 8: Hexagon nut EN 1664 - M12 - 8 COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 7 EN 1664 : 1997 Gauge A max. min. max. min. wa Ta 9,25 9.24 2,50 2.49 11,56 11,55 3,lO 3,09 15.02 15,Ol 4,
33、60 4,59 18,49 18,48 5,90 5,89 20,79 20,78 6.80 6,79 24,26 24.25 7.70 7,69 27.72 27.71 8,90 8,89 Annex A (normative) Gauge B Gauge C max. min. min. min. rnax. min. 6.78 8,77 3 14 1,08 1,07 11,04 11,03 4 16 1.19 1.18 14,37 14,36 4 20 1,31 1,30 17,76 17,75 5 24 1,65 1,64 20.02 20,Ol 5 29 2.20 2,19 23.3
34、5 23,34 6 32,5 2,55 2,54 26.74 26.73 6 37 2.96 2.95 Wh Th wc Tc Gauging of hexagon nuts with flange A. 1 Recommended method for gauging of hexagon (see figure A. 1 and table A. 1 ) The nut shall be gauged using two plain ring gauges, A and B, to demonstrate the coincidental acceptability of hexagon
35、height, wrenching height, corner fill and width across corners. Gauge A shall be placed over the hexagon and shall be seated on the flange. Gauge B shall be placed on the top of the nut normal to the nut axis. The two gauges shall not be in contact. A.2 Recommended method for gauging of flange (see
36、figure A. 1 and table A. 1) Gauge C is a flat feeler or ring gauge. It is used to prove that the flange thickness at the junction of the gauge with the hexagon portion is equal to or greater than specified values. The acceptance criterion is that gauge C will fit under gauge A without contact when the nut IS seated on a flat plate. 1 GaugeA 2 Gauge B 3 Gauge C Thread M5 M6 M8 MIO MI 2 MI4 M16 M 20 Figure A.l Table A.l COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling Services
