1、BRITISH STANDARD BS EN ISO 8734:1998 Parallel pins, of hardened steel or martensitic stainless steel (Dowel pins) The European Standard EN ISO 8734:1997 has the status of a British Standard ICS 21.060.50BS EN ISO 8734:1998 This British Standard, having been prepared under the direction of the Engine
2、ering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 May 1998 BSI 05-1999 ISBN 0 580 29403 X National foreword This British Standard is the English language version of ENISO8734:1997. It is identical with ISO 8734:1997. It supersedes BSEN28734:1992
3、 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee FME/9, Bolts, nuts and accessories, to Subcommittee FME/9/6, General purpose fasteners and accessories, which has the responsibility to: aid enquirers to understand the text; present to the responsible
4、international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on reques
5、t to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international European pub
6、lications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary pr
7、ovisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN ISO ti
8、tle page, page 2, the ISO title page, page ii, pages 1 to 4 and aback cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date Commen
9、tsBSEN ISO 8734:1998 BSI05-1999 i Contents Page National foreword Inside front cover Foreword 2 Foreword ii Text of ISO 8734 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8734 November 1997 ICS 21.060 Supersedes EN 28734:1992 Descriptors: See ISO document English version Parallel
10、 pins, of hardened steel or martensitic stainless steel (Dowel pins) (ISO 8734:1997) Goupilles cylindriques en acier tremp et en acier inoxydable martensitique (ISO 8734:1997) This European Standard was approved by CEN on 23 October 1997. CEN members are bound to comply with the CEN/CENELEC Internal
11、 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 standards may be obtained on application to the Central Secretariat or to any CEN member. T
12、his European Standard exists 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 Secretariat has the same status as the official versions. CEN members are
13、the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Eu
14、ropisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8734:1997 EENISO 8734:1997 BSI 05-1999 2 Foreword The text of the International Standard
15、 ISO8734:1997 has been prepared by Technical Committee ISO/TC 2 “Fasteners” in collaboration with Technical Committee CEN/TC 185 “Threaded and non-threaded mechanical fasteners and accessories”, the secretariat of which is held by DIN. This European Standard supersedes EN28734:1992. This European St
16、andard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 1998, and conflicting national standards shall be withdrawn at the latest by May 1998. According to the CEN/CENELEC Internal Regulations, the national standards
17、 organizations of the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and theUnitedKingdom. Endorsement notice
18、 The text of the International Standard ISO8734:1997 has been approved by CEN as a European Standard without any modifications. Contents Page Foreword 2 1 Scope 1 2 Normative references 1 3 Dimensions 1 4 Requirements and reference International Standards 3 5 Designation 4 Figure 1 1 Table 1 Dimensi
19、ons 2 Table 2 Requirements and reference International Standards 3EN ISO8734:1997 ii BSI05-1999 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carr
20、ied out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
21、ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires ap
22、proval by at least75% of the member bodies casting a vote. International Standard ISO 8734 was prepared by Technical Committee ISO/TC 2, Fasteners. This second edition cancels and replaces the first edition (ISO8734:1987), which has been technically revised. Descriptors: Fasteners, steel products, p
23、ins (mechanics), straight pins, specifications, characteristics, dimensions, designation.EN ISO 8734:1997 BSI05-1999 1 1 Scope This International Standard specifies the characteristics of parallel pins (dowel pins) of steel, through hardened or case hardened and martensitic stainless steel with nomi
24、nal diameters, d, from1mm to20mm inclusive. 2 Normative references The following standards contain provisions 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 revis
25、ion, 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 ISO maintain registers of currently valid International Standards. ISO 3269:1988, Fasteners Acce
26、ptance inspection. ISO 3506-1:1997, Corrosion-resistant stainless steel fasteners Part 1: Bolts, screws and studs. ISO 4042:, Fasteners Electroplated coatings 1) . 3 Dimensions See Figure 1 and Table 1. 1) To be published. (Revision of ISO 4042:1989) Figure 1 EN ISO 8734:1997 2 BSI05-1999 Table 1 Di
27、mensions Dimensions in millimetres d m6 a 1 1,5 2 2,5 3 4 5 6 8 10 12 16 20 c . 0,2 0,3 0,35 0,4 0,5 0,63 0,8 1,2 1,6 2 2,5 3 3,5 l b nom. min. max. 3 2,75 3,25 4 3,75 4,25 5 4,75 5,25 6 5,75 6,25 8 7,75 8,25 10 9,75 10,25 12 11,5 12,5 14 13,5 14,5 16 15,5 16,5 18 17,5 18,5 20 19,5 20,5 Range 22 21,
28、5 22,5 24 23,5 24,5 26 25,5 26,5 of 28 27,5 28,5 30 29,5 30,5 32 31,5 32,5 commercial 35 34,5 35,5 40 39,5 40,5 45 44,5 45,5 lengths 50 49,5 50,5 55 54,25 55,75 60 59,25 60,75 65 64,25 65,75 70 69,25 70,75 75 74,25 75,75 80 79,25 80,75 85 84,25 85,75 90 89,25 90,75 95 94,25 95,75 100 99,25 100,75 a
29、Other tolerances as agreed between customer and supplier. b For nominal lengths above 100 mm, steps of 20 mm.EN ISO 8734:1997 BSI05-1999 3 4 Requirements and reference International Standards See Table 2. Table 2 Requirements and reference International Standards Steel Martensitic stainless steel St
30、 C1 in accordance with ISO3506-1 Type A pin through hardened Type B pin case hardened Chemical composition limits (check analysis) % either or hardened and tempered to a hardness of 460 HV30 to 560 HV30 Material a C Si Mn P S Cr 0,95 to 1,1 0,15 to 0,35 0,25 to 0,4 0,03 max. 0,025 max. 1,35 to 1,65
31、C Si Mn P S 0,06 to 0,13 0,1 to 0,4 0,25 to 0,6 0,025 max. 0,05 max. C Si Mn P S Pb 0,15 max. 0,10 max. 0,9 to 1,3 0,07 max. 0,15 to 0,35 0,15 to 0,35 at the suppliers discretion Hardness: 550 HV30 to 650 HV30 Surface hardness: 600 HV1 to 700 HV1 Hardness at case depth0,25 to0,4 mm : 550HV1min. Surf
32、ace Plain, i.e. pins to be supplied in natural 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 ele
33、ctroplated or phosphate-coated, they shall be suitably treated immediately after plating or coating to obviate detrimental hydrogen embrittlement, although freedom from hydrogen embrittlement ist not absolutely guaranteed (see ISO4042). Plain, i.e. pins to supplied in natural finish. All tolerances
34、shall apply prior to the application of a plating or coating. Surface roughness R a# 0,8 4m Workmanship Pins shall be free of irregularities or detrimental defects. No burrs shall appear on any part of the pin. Acceptability The acceptance procedure is covered in ISO 3269. a Other materials as agree
35、d between customer and supplier.EN ISO 8734:1997 4 BSI05-1999 5 Designation EXAMPLE 1 A through hardened steel parallel pin type A, with nominal diameter d = 6 mm and nominal length l = 30 mm is designated as follows: Parallel pin ISO8734 6 30 A St EXAMPLE 2 A martensitic stainless steel parallel pi
36、n of grade C1, with nominal diameter d = 6 mm and nominal length l = 30 mm is designated as follows: Parallel pin ISO8734 6 30 C15 blankBS EN ISO 8734:1998 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishSt
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