1、DEUTSCHE NORM March 1998 Grooved pins, full-length taper grooved English version of DIN EN IS0 8744 (IS0 8744 : 1997) DIN EN IS0 8744 ICs 21.060.50 Descriptors: Fasteners, grooved pins. Kegelkerbstifte (IS0 8744 : 1997) Supersedes DIN EN 28744, October 1992 edition. European Standard EN IS0 8744 : 1
2、997 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, International Standard IS0 8744 as a European Standard. The responsible German body involved
3、 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. The DIN Standards corresponding to the International Standards referred to in clause
4、 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*) Amendments In comparison with DIN EN 28744, October 1992 edition, the standard has been editorially revised and the scope extended to include spe
5、cifications for stainless steel pins. Previous editions DIN 1471 : 1943-04, 1956-09, 1978-1 1 DIN EN 28744: 1992-1 O. 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 DIN EN IS0 4042 Tabular layout of article ch
6、aracteristics 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)*) *) At present at the stage of draft. EN comprises 6 pages. No pari
7、 of this standard may be reproduced without the prior permission of Ref. No. DIN EN IS0 8744 : 1998-0 Y Deutsches Institut fr Normung e. V., Berlin. wth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). English price group 06 Sales No. 1106 08.98 EUROPEA
8、N STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 8744 November 1997 ICs 21.060.50 Descriptors: Fasteners, grooved pins. Supersedes EN 28744 : 1992. English version Grooved pins, full-length taper grooved (IS0 8744 : 1997) Goupilles canneles cannelures progressives sur toute la longueur (dbouchantes
9、) (IS0 8744 : 1997) Kegelkerbstifte (IS0 8744 : 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 Standard the status of a national standard without any al
10、teration. 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, German). A version in any other language made by tr
11、anslation 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, Denmark, Finland, France, Germany, Greece, Iceland, Ir
12、eland, 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 Stassart 36, B-1050 Brussels O 1997. CEN - All rights
13、of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN IS0 8744 : 1997 E Page 2 EN IS0 8744 : 1997 Foreword International Standard IS0 8744 : 1997 which was prepared by ISO/TC 2 Fasteners of the International Organization for Standardization, has been a
14、dopted 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, either by publication of an identical text or by endors
15、ement, 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: Austria, Belgium, the Czech Republic, Denmark, Finl
16、and, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. Grooved pins, full-length taper grooved, Endorsement notice The text of the International Standard IS0 8744 : 1997 was approved by CEN as a Europe
17、an Standard without any modification. NOTE: Normative references to international publications are listed in Annex ZA (normative). Page 3 EN IS0 8744 : 1997 1 Scope This International Standard specifies the characteristics of full-length taper grooved pins made of steel or austenitic stainless steel
18、 which have three equally spaced grooves impressed longitudinally on their exterior surface, with nominal diameter, d, from 1.5 mm to 25 mm inclusive. The displaced material to each side of the grooves forming an expanded diameter, d2, which is larger than the nominal diameter d, will cause a non-po
19、sitive 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 provisions which, through reference in this text, constitute provisions of this International Standard. At the time of pub
20、lication, 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 possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain regi
21、sters of currently valid International Standards. IS0 3269: 1988, Fasteners -Acceptance inspection. IS0 3506-1:1997, Corrosion-resistant stainless steel fasteners - Part 7: Bolts, screws and studs. IS0 4042:-“, Fasteners - Electroplated coatings. IS0 8749:1986, Pins and grooved pins - Shear test. IS
22、0 97 17: 1990, Phosphate conversion coatings for metals - Method of specifying requirements. 3 Dimensions See figure 1 and table 1. 1) Chamfer permissible 2) The grooving angle 70“ applies only to grooved pins made from steel as shown in clause 5. The grooving angle may be modified depending on resi
23、lience of material Figure 1 1) To be published. (Revision of IS0 4042:1989) Page 4 EN IS0 8744 : 1997 1 nom. 1,5 2 Table 1 - Dimensions Dimensions in millimetres 2.5 3 4 5 6 8 10 12 16 20 25 t01. h9 hll Expanded diameter, d:.” = dinimum shear Irength, double” N lZ 0,2 0,25 0,3 0,4 0.5 0,63 0,8 1 12
24、1.6 2 2.5 3 1,6 2,84 4.4 6,4 11,3 17,6 25.4 45,2 70.4 101,8 181 283 444 I I 3.25 - 3.3 - 3,25 - 3.2 - - 4.3 5.3 4.35 5.35 43 5.3 4,25 5.25 10 12 14 16 18 20 22 24 26 28 30 I I I 9,75 10,25 11.5 12,5 13,5 145 15,5 16,5 1,6 17,5 18,5 19.5 20,5 21,5 22,5 23,5 24.5 25,5 26.5 - - 27,s 28,s 29.5 30.5 89,2
25、51 90,751 94.25 95.75 99.25 100,75 120 119,25 120,75 2,15 2,7 - 2.65 32 35 40 i0.05 31,5 32,5 34.5 35,5 39.5 40,5 t0.1 I 45 50 55 60 65 70 75 80 85 - - 8.35 445 45,5 49.5 50,5 54.25 5575 59.25 60,75 64,25 65.75 69.25 70,75 74.25 75,75 79.25 80,75 a4,25 85.75 8.25 - 20,6 1) Applies only to grooved pi
26、ns made from steel as shown in clause 5. 2) The range of commercial lengths is between the stepped lines. 3) The expanded diameter d, applies only to pins made from steel as shown in clause 5. For other materials, for ex- ample stainless steel, a reduction amount shall be subtracted from the given v
27、alues and should be agreed between customer and supplier. 4) For testing d2, a GO/NO GO ring gauge should be used. Page 5 EN IS0 8744 : 1997 Steel (St) Hardness 125 HV30 to 245 HV30 4 Application Austenitic stainless steel AI in accordance with IS0 3506-1, hardness 210 HV30 to 280 HV30 The diameter
28、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 H11. 5 Requirements and reference International Standards See table 2. Table 2 - Requirements and reference International Standards Material Grooves Surface fini
29、sh Workmanship Shear strength test Acceptability 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, phosphat
30、e coating or zinc plating with chromate conver- sion coating (see IS0 9717 and IS0 4042). Other coatings as agreed between customer and supplier. All tolerances shall apply prior to the application of a plating or coating. Plain, .e. pins to be supplied in natural finish. Pins shall be free of irreg
31、ularities or detrimental defects. The 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 taper grooved steel pin with nominal diameter d, = 6 mm and nominal leng
32、th 1 = 50 rnrn is designated as follows: Grooved pin IS0 8744 - 6 x 50 - St EXAMPLE 2 A full-length taper grooved austenitic stainless steel pin of grade AI, with nominal diameter d, = 6 rnm and nominal length 1 = 50 mm is designated as follows: Grooved pin IS0 8744 - 6 x 50 - Al Page 6 EN IS0 8744:
33、 1997 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 th
34、e 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 revision. For undated references the latest edition of the publication referred to applies. EN - Year Publication Year Title - IS0 8749 1986 Pins and grooved pins - Shear test EN 28749 1992
