1、Grooved pins, full-length parallel grooved, with chamfer English version of DIN EN IS0 8740 (IS0 8740 : 1997) ICs 21.060.50 Descriptors: Fasteners, grooved pins. DIN EN IS0 8740 Supersedes DIN EN 28740, October 1992 edition. Previous editions DIN 1473: 1943-04, 1956-09, 1978-1 1 ; DIN EN 28740: 1992
2、-1 O. Zylinderkerbstifte mit Fase (IS0 8740 : 1997) European Standard EN IS0 8740 : 1997 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/TC 185 to adopt, without alteration, Interna
3、tional Standard IS0 8740 as a European Standard. The responsible German body involved in its preparation was the Normenausschu Mechanische Verbindungselemente (Fasteners Standards Committee). The DIN 4000-9-1 tabular layout of article characteristics shall apply to the pins covered in this standard.
4、 The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as follows: IS0 Standard DIN Standard IS0 3269 DIN IS0 3269 IS0 4042 IS0 8749 DIN EN 28749 IS0 3506-1 DIN EN IS0 3506-1 DIN EN IS0 4042*) I *) At present at the stage of draft. Amendments In compari
5、son with DIN EN 28740, October 1992 edition, the standard has been editorially revised and the scope extended to include specifications for stainless steel pins. National Annex NA Standards referred to (and not included in Normative references and Annex ZA) DIN 4000-9 DIN EN 28749 DIN EN IS0 3506-1
6、DIN EN IS0 4042 Tabular layout of article characteristics for bolts, pins, rivets, split pins and keys Pins and grooved pins - Shear test Corrosion-resistant stainless steel fasteners - Part 1 : Bolts, screws and studs Fasteners - Electroplated coatings (ISO/DIS 4042 : 1996)*) EN comprises 6 pages.
7、Q No pari of this standard may be reproduced without the prior permission of Ref. No. DIN EN IS0 8740 : 1998-03 DIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). English price group 06 Sales No. 1106
8、 08.98 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 8740 November 1997 ICs 21.060.50 Descriptors: Fasteners, grooved pins. Supersedes EN 28740 : 1992. English version Grooved pins, full-length parallel grooved, with chamfer (IS0 8740 : 1997) Goupilles canneles cannelures constantes sur t
9、oute la longueur dbouchantes, chanfrein (IS0 8740 : 1997) Zylinderkerbstifte mit Fase (IS0 8740 : 1997) This European Standard was approved by CEN on 1997-1 0-1 8. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standar
10、d the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such 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, G
11、erman). 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, the Czech Republic, Denm
12、ark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stas
13、sart 36, B-1050 Brussels O 1997. CEN - All rights of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN IS0 8740 : 1997 E Page 2 EN IS0 8740 : 1997 Foreword International Standard IS0 8740 : 1997 which was prepared by ISO/TC 2 Fasteners of the Internat
14、ional Organization for Standardization, has been adopted by Technical Committee CEN/TC 185 Threaded and non-threaded mechanical fasteners and acces- sories, the Secretariat of which is held by DIN, as a European Standard. This European Standard shall be given the status of a national standard, eithe
15、r by publication of an identical text or by endorsement, and conflicting national standards withdrawn, by May 1998 at the latest. In accordance with the CENKENELEC Internal Regulations, the national standards organizations of the follow- ing countries are bound to implement this European Standard: A
16、ustria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. Grooved pins, full-length parallel grooved, with chamfer, Endorsement notice The text of the Int
17、ernational Standard IS0 8740 : 1997 was approved by CEN as a European Standard without any modification. NOTE: Normative references to international publications are listed in Annex ZA (normative). Page 3 EN IS0 8740 : 1997 1 Scope This International Standard specifies the characteristics of full-le
18、ngth parallel grooved pins made of steel or austenitic stainless steel with chamfer which have three equally spaced grooves impressed longitudinally on their exterior surface and a pilot to facilitate insertion, with nominal diameter, d, from 1,5 mm to 25 mm inclu- sive. The displaced material to ea
19、ch side of the grooves forming an expanded diameter d2 which is larger than the nominal diameter d, will cause a non-positive locking fit when these grooved pins are forced into a drilled hole equal to the nominal diameter d, (see clause 4). 2 Normative references The following standards contain pro
20、visions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the
21、possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 3269: 1988, Fasteners -Acceptance inspection. IS0 3506-1:1997, Corrosion-resistant stainless steel fasteners - Part 1: Bolts, s
22、crews and studs, IS0 4042:-“, Fasteners - Electroplated coatings. IS0 8749:1986, Pins and grooved pins - Shear test. IS0 9717: 1990, Phosphate conversion coatings for metals - Method of specifying requirements. 3 Dimensions See figure 1 and table 1. Chamfer permissible a = 15“ to 30“ The grooving an
23、gle 70“ applies only to grooved pins made from steel as shown in clause 5. The grooving angle may be modified depending on resilience of material. Figure 1 1) To be published. (Revision of IS0 4042:1989) Page 4 EN IS0 8740 : 1997 nom. 8 10 12 14 16 18 20 22 24 26 28 30 32 35 40 45 50 55 60 65 70 75
24、ao a5 90 95 100 dl nom 1*? min. 7,75 9,75 11,5 13,5 15,5 17.5 19.5 21.5 23.5 25,5 27,5 29.5 31.5 34.5 39.5 44,5 493 54.25 59.25 64.25 69.25 74.25 79.25 84.25 89.25 94.25 99.25 to1 a Minimum shear strength, double? kN max. 8.2E 102 12,: 14,E 16,E 18.E 20.E 22.E 24.E 26,E 28,E 30,E 32,E 35,: 40,E 45,:
25、 50,E 55.7E 60.7E 65.7E 70.7E 75,7E 80.7: 85,7E 90,7E 95.7E 100,7E Table 1 - Dimensions Dimensions in millimetres 1,5 2 2,5 3 4 5 6 8 10 12 16 20 25 h9 hll I 1 1 1 1 1 1 1 1 1 1 1 Expanded diameter, d:.? r0.05 10.35 1) Applies only to grooved pins made from steel as shown in clause 5. 2) The range o
26、f commercial lengths is between the stepped lines. 12,35 16.4 I 10.1 3) The expanded diameter, d, applies only to pins made from steel as shown in clause 5. For other materials, for example stainless steel, a reduction amount shall be subtracted from the given values and should be agreed between cus
27、tomer and supplier. 4) For testing d2, a GO/NO GO ring gauge should be used. Page 5 EN IS0 8740 : 1997 4 Application The diameter of the hole into which the groove pin is to be inserted shall be equal to the nominal diameter d, of the mating pin and to tolerance class HI 1. 5 Requirements and refere
28、nce International Standards See table 2. Table 2 - Requirements and reference International Standards Material” Grooves Surface finish Workmanship Shear strength test Acceptability Steel (St) Hardness 125 HV30 to 245 HV30 Austenitic stainless steel AI in accordance with IS0 3506-1, hardness 210 HV30
29、 to 280 HV30 Form of groove at the discretion of the supplier Plain, .e. pins to be supplied in natural finish treated with a protective lubricant, unless otherwise specified by agreement between customer and supplier. Preferred coatings are black oxide, phosphate coating or zinc plating with chroma
30、te conver- sion coating (see IS0 9717 and IS0 4042). Other coatings as agreed between customer and supplier. All tolerances shall apply prior to the appli- cation of a plating or coating. Plain, .e. pins to be supplied in natural finish. Pins shall be free of irregularities or detrimental defects. T
31、he test shall be in accordance with IS0 8749. The acceptance procedure is covered in IS0 3269. 1) Other materials as agreed between customer and supplier. 6 Designation EXAMPLE 1 A full-length parallel grooved steel pin with chamfer with nominal diameter d, = 6 mm and nominal length 1 = 50 mm is des
32、ignated as follows: Grooved pin IC0 8740 - 6 x 50 - St EXAMPLE 2 A full-length parallel grooved austenitic stainless steel pin of grade AI with chamfer, with nominal diameter d, = 6 mm and nominal length I = 50 mm is designated as follows: Grooved pin IS0 8740 - 6 x 50 - AI Page 6 EN IS0 8740 : 1997
33、 Annex ZA (normative) Normative references to international publications with their relevant European publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references cited at the appropriate places in the text and the pub
34、lications 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. Publication Year Title - EN Year IS0 8749 1986 Pins and grooved pins - Shear test EN 28749 1992
