1、UDC 621.8822 : 621.882.1 5 DEUTSCHE NORM February 1992 Fasteners (IS0 273 : 1979) English version of DIN EN 20 273 Clearance holes for bolts and screws DIN - EN 20 273 This standard incorporates the English version of Is0 273. Mechanische Verbindungselemente; Durchgangslcher fr Schrauben (IS0 273 :
2、1979) Supersedes DIN IS0 273, September 1979 edition. European Standard EN 20 273 : 1991 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been published in accordance with a decision taken by CEN/BT to adopt, without alteration, Internation
3、al Standard IS0 273 (prepared by ISOiTC 2) as a European Standard. The responsible German body involved in the preparation of this standard was the Normenausschu Mechanische Verbindungsekmente (Fasteners Standards Committee). Previous editions DIN 69: 05.24, 09.30, 04.36, 05.43, 04.64, 08.67, 11.70,
4、 08.71; DIN IS0 273: 09.79. Amendments IS0 273 having been adopted as a European Standard, the status of the corresponding DIN Standard (DIN IC0 273) has been changed accordingly. EN comprises 4 pages. DIN EN 20273 Engl. Price group 5 Beufh Verlag GmbH. Berlin, has the exclusive right of sale for Ge
5、rman Standards (DIN-Normen). 05.93 Sales No. 1105 COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesCOPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesEUROPEAN STANDARD EN 20 273 NORME EUROPEENNE EUROPAI
6、SCHE NORM October 1991 UDC 621.882.2 : 621.882.15 Descriptors: Fasteners, bolts, screws, dimensions, hole size, dimensional tolerances. English version Fasteners Clearance holes for bolts and screws (IS0 273 : 1979) Elments de fixation; trous de passage pour boulons et vis (IS0 273 : 1979) Mechanisc
7、he Verbindungselemente; Durchgangslcher fr Schrauben (IS0 273 : 1979) This European Standard was approved by GEN on 1991-10-10 and is identical to the IS0 Standard as referred to. GEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this
8、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 (Eng
9、lish, French, German). A version in any other language made by translation under the responsibility of a GEN 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, Denmark,
10、Finland, France, Germany, Greece, Iceland, Ireland, Italy,.Luxembourg, Netherlands, Norway, Por- tugal, Spain, Sweden, Switzerland and United Kingdom. GEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36,B-10
11、50 Brussels Q 1991. Copyright reserved to all CEN members. Ref. No. EN 20 273 : 1991 E COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 2 EN 20 273 : 1991 Foreword In 1990, CEN/BT decided, in accordance with the CENXENELEC Internal Regulations,
12、to submit International Standard IS0 273 : 1979 Fasteners: clearance holes for bolts and screws to the CEN PO procedure. Following the positive result of the PQ, CEN/BT agreed to submit IS0 273 : 1979 with the following modifications to Formal Vote. In the French version, replace: - boulon by vis, -
13、 boulon, VIS by vis. In accordance with the CENICENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzer
14、land and United Kingdom. Endorsement notice The text of the International Standard IS0 273 : 1979 was approved by CEN as a European Standard with agreed common modifications as given above. COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 3 EN 2
15、0 273 : 1991 1 SCOPE AND FIELD OF APPLICATION This International Standard specifies clearance hole diameters for general purpose applications. These values result from bearing area calculations in connection with IS0 bolt and nut product standards. NOTE - Clearance holes for special applications sho
16、uld be selected on the basis of derign requirements. COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling ServicesPage 4 EN 20 273 : 1991 Thnid dmtr d 42 45 4a 2 DIMENSIONS Ckrnna hol. dh aiir : fina medium coarse 43 45 48 46 48 52 50 52 56 i * Clrorrncr hok d,
17、Thrud I dumotor Soria : 52 54 56 62 56 58 62 66 Bo 62 66 70 64 66 70 74 72 74 78 82 76 78 82 86 80 82 86 91 85 87 91 96 68 70 74 78 90 95 100 105 110 115 120 125 130 140 150 104 109 112 114 117 122 119 122 127 144 147 155 155 158 165 The following tolerance fields are given for information only, for
18、 use where it is desirable to specify tolerances : fine series : H12 medium series : H13 coarse series : H14 In cases where it is necessary to avoid interference between the edge of the hole and the underhead fillet of the bolt, a chamfer is recommended. COPYRIGHT DIN DEUTSCHES Institut Fur Normung E.V.- EnglishLicensed by Information Handling Services
