1、DEUTSCHE NORM March 1998 DIN EN IS0 8734 Parallel pins, of hardened steel or martensitic stainless steel (Dowel pins) (IS0 8734 : 1997) English version of DIN EN IS0 8734 Previous editions 1 DIN 6325: 1951-03, 1958-10, 1971-10; DIN EN 28734: 1992-10. ICs 21.060.50 Supersedes DIN EN 28734, October 19
2、92 edition. Descriptors: Fasteners, parallel pins. Zylinderstifte aus gehrtetem Stahl und martensitischem nichtrostendem Stahl (IS0 8734 : 1997) European Standard EN IS0 8734 : 1997 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been publ
3、ished in accordance with a decision taken by CEN/TC 185 to adopt, without alteration, International Standard IS0 8734 as a European Standard. The responsible German body involved in its preparation was the Normenausschu Mechanische Verbindungselemente (Fasteners Standards Committee). The DIN 4000-9-
4、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 2 of the EN are as follows: IS0 3269 DIN IS0 3269 IS0 4042 IS0 3506-1 DIN EN IS0 3506-1 DIN EN IS0 4042*) Amendments The
5、following amendments have been made to DIN EN 28734, October 1992 edition. a) The scope of the standard has been extended to include specifications for stainless steel pins. b) The pin end for type A and type B pins is optional. c) The standard has been editorially revised. National Annex NA Standar
6、ds referred to (and not included in Normative references) DIN 4000-9 DIN EN IS0 3506-1 DIN EN IS0 4042 Tabular layout of article characteristics for bolts, pins, rivets, split pins and keys Corrosion-resistant stainless steel fasteners - Part 1 : Bolts, screws and studs Fasteners - Electroplated coa
7、tings (ISO/DIS 4042 : 1996)*) *) At present at the stage of draft. EN comprises 6 pages. Q No part of this standard may be reproduced without the prior permission of Ref. No. DIN EN IS0 8734 : 1998-03 DIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, D-10772 Berlin, has the exclusi
8、ve right of sale for German Standards (DIN-Normen). English price group 06 Sales No. 1106 08.98 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 8734 November 1997 ICs 21.060.50 Descriptors: Fasteners, parallel pins. Supersedes EN 28734 : 1992. English version Parallel pins, of hardened stee
9、l and martensitic stainless steel (Dowel pins) (IS0 8734 : 1997) Goupilles cylindriques en acier tremp et en acier inoxydable martensitique (IS0 8734 : 1997) Zylinderstifte aus gehrtetem Stahl und martensitischem nichtrostendem Stahl (IS0 8734 : 1997) This European Standard was approved by CEN on 19
10、97-1 0-23. 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 such national stand- ards may be o
11、btained 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 language and notified to the Central Se
12、cretariat 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, Sweden, Switzerland, and the United
13、 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 of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN I
14、S0 8734 : 1997 E Page 2 EN IS0 8734 : 1997 Foreword International Standard IS0 8734 : 1997 which was prepared by ISO/TC 2 Fasteners of the International Organization for Standardization, has been adopted by Technical Committee CEN/TC 185 Threaded and non-threaded mechanical fasteners and accessories
15、, 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 endorsement, and conflicting national standards withdrawn, by May 1998 at the latest. In accordance with the CE
16、NKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain
17、, Sweden, Switzerland, and the United Kingdom. Parallel pins, of hardened steel or martensitic stainless steel (Dowel pins), Endorsement notice The text of the International Standard IS0 8734 : 1997 was approved by CEN as a European Standard without any modification. Page 3 EN IS0 8734 : 1997 1 Scop
18、e This International Standard specifies the characteristics of parallel pins (dowel pins) of steel, through hardened or case hardened and martensitic stainless steel with nominal diameters, d, from 1 mm to 20 mm inclusive. 2 Normative references The following standards contain provisions which, thro
19、ugh 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 possibility of appl
20、ying 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 - Parr I: Bolts, screws and studs. IS0
21、 4042:-”, Fasteners - Electroplated coatings. 3 Dimensions Seefigure 1 andtable 1. Optional end shape at the manufacturers discretion u t” I- 1 l) Radius and dimpled pin end permissible Figure 1 1) To be published. (Revision of IS0 4042:1989) Page 4 EN IS0 8734 : 1997 d m6” 1 1.5 c 0,2 0.3 Table 1 -
22、 Dimensions 2 2.5 3 4 5 6 8 10 12 16 20 0,35 0,4 0,5 0.63 0.8 1,2 1,6 2 2,5 3 3,5 1) Other tolerances as agreed between customer and supplier. 2) For nominal lengths above 100 mm, steps of 20 mm. Page 5 EN IS0 8734 : 1997 4 Requirements and reference International Standards See table 2. Table 2 - Re
23、quirements and reference International Standards Material” r Steel St TY Pe A pin through hardened Type B pin case hardened Chemical composition limits (check analysis) % C 0,95 to 1.1 si O, 15 to 0,35 Mn 0.25 to 0,4 P 0,03 max. S 0,025 max. Cr 1,35 to 1,65 Hardness: 550 HV30 to 650 HV30 either or C
24、 0,06to0,13 C 0,15 max. Si 0.1 to0,4 Si 0,lO max. Mn 0,25 to 0,6 Mn 0,9 to 1,3 P 0,025 max. P 0,07 max. S 0,05 max. S 0,15 to0,35 Pb 0.15 to 0,35 at the suppliers discretion Surface hardness: 600 HVI to 700 HVI Hardness at case depth 0,25 to 0,4 mm: 550 HV1 min. Plain, .e. pins to be supplied in nat
25、ural finish, treated with a protective lubricant, unless otherwise specified by agreement between customer and supplier. If pins are surface coated appropriate plating or coating processes should be employed to avoid hydrogen embrittlement. When pins are electro- plated or phosphate-coated, they sha
26、ll be suitably treated immediately after plating or coating to obviate detrimental hydrogen embrittlement, aithough freedom from hydrogen embrittlement ist not absolutely guaran- teed (see IS0 4042). All tolerances shall apply prior to the application of a plating or coating Ra c 0,8 pm Surface Surf
27、ace roughness Workmanship Acceptability Martensitic stainless steel CI in accordance with IS0 3506-1 hardened and tempered to a hardness of 460 HV30 to 560 HV30 Plain, .e. pins to be supplied in natural finish. Pins shall be free of irregularities or detrimental defects. No burrs shall appear on any
28、 part of the pin. The acceptance procedure is covered in IS0 3269. Page 6 EN IS0 8734 : 1997 5 Designation EXAMPLE 1 A through hardened steel parallel pin type A, with nominal diameter d = 6 mm and nominal length 1 = 30 mm is designated as follows: Parallel pin IS0 8734 - 6 x 30 - A - St EXAMPLE 2 A martensitic stainless steel parallel pin of grade CI, with nominal diameter d = 6 mm and nominal length 1 = 30 mm is designated as follows: Parallel pin IS0 8734 - 6 x 30 - CI
