1、BRITISH STANDARD BS EN ISO 8742:1998 Grooved pins One-third-length centre grooved The European Standard EN ISO8742:1997 has the status of a British Standard ICS 21.060.50BSENISO8742:1998 This British Standard, having been prepared under the directionof the Engineering SectorBoard, was published unde
2、rthe authority of the Standards Board and comes intoeffect on 15 May 1998 BSI 04-1999 ISBN 0 580 29063 8 National foreword This British Standard is the English language version of EN ISO8742:1997. It is identical with ISO8742:1997. It supersedes BS EN28742:1992 which is withdrawn. The UK participati
3、on 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 international/European committee any en
4、quiries 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 request to its secretary. Cross-references At
5、tention 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 or European publications referred to in this docume
6、nt 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 provisions of a contract. Users of Bri
7、tish 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 title page, page 2, the ISO title page
8、, page ii, pages 1 to 4 and a back 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 CommentsBSENISO8742:1998 BSI 04-1999 i Co
9、ntents Page National foreword Inside front cover Foreword 2 Foreword ii Text of EN ISO 8742 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8742 November 1997 ICS 21.060 Supersedes EN 28742:1992 Descriptors: See ISOdocument English version Grooved pins One-third-length centre groov
10、ed (ISO 8742:1997) Goupilles canneles cannelures centrales constantes sur le tiers de la longueur non dbouchantes (ISO8742:1997) Knebelkerbstifte mit kurzen Kerben (ISO8742:1997) This European Standard was approved by CEN on 18 October 1997. CEN members are bound to comply with the CEN/CENELEC Inter
11、nal 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
12、. This 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 a
13、re 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
14、 Europisches 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 ISO8742:1997 EENISO8742:1997 BSI 04-1999 2 Foreword The text of the International Standar
15、d ISO8742:1997 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 EN28742:1992. This European S
16、tandard 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 standard
17、s 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 the United Kingdom. Endorsement not
18、ice The text of the International Standard ISO8742:1997 was approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA (normative). Contents Page Foreword 2 1 Scope 1 2 Normative references 1 3 Dimensions 1 4 Applicatio
19、n 3 5 Requirements and reference International Standards 3 6 Designation 3 Annex ZA (normative) Normative referencestointernational publicationswiththeirrelevant Europeanpublications Inside back cover Figure 1 1 Table 1 Dimensions 2 Table 2 Requirements and reference International Standards 3ENISO87
20、42:1997 ii BSI 04-1999 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 carried out through ISO technical committees. Each member body interested in
21、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. ISO collaborates closely with the International Electrotechnical Commissi
22、on (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 approval by at least 75% of the member bodies casting a vote. International
23、 Standard ISO8742 was prepared by Technical Committee ISO/TC2, Fasteners. This second edition cancels and replaces the first edition (ISO8742:1986), which has been technically revised. Descriptors: Fasteners, steel products, pins (mechanics), grooved pins, specifications, characteristics, dimensions
24、, designation.ENISO8742:1997 BSI 04-1999 1 1 Scope This International Standard specifies the characteristics of one-third-length centre grooved pins made of steel or austenitic stainless steel which have three equally spaced grooves impressed longitudinally on their exterior surface, with nominal di
25、ameter, d 1 , from 1,5 mm to 25 mm inclusive. The displaced material to each side of the grooves forming an expanded diameter, d 2 , which is larger than the nominal diameter d 1will cause a non-positive locking fit when these grooved pins are forced into a drilled hole equal to the nominal diameter
26、 d 1(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 publication, the editions indicated were valid. All standards are subject to revision, and parties to agre
27、ements 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 Acceptance inspection. ISO 3
28、506-1:1997, Corrosion-resistant stainless steel fasteners Part 1: Bolts, screws and studs. ISO 4042: 1) , Fasteners Electroplated coatings. ISO 8749:1986, Pins and grooved pins Shear test. ISO 9717:1990, Phosphate conversion coatings for metals Method of specifying requirements. 3 Dimensions See Fig
29、ure 1 and Table 1. 1) To be published. (Revision of ISO4042:1989) Figure 1 ENISO8742:1997 2 BSI 04-1999 Table 1 Dimensions Dimensions in millimetres d 1 nom. 1,5 2 2,5 3 4 5 6 8 10 12 16 20 25 tol. h9 h11 . 0,2 0,25 0,3 0,4 0,5 0,63 0,8 1 1,2 1,6 2 2,5 3 Minimum shear strength, double akN 1,6 2,84 4
30、,4 6,4 11,3 17,6 25,4 45,2 70,4 101,8 181 283 444 l b Expanded diameter, d 2 c,d nom. min. max. 0,05 0,1 8 7,75 8,25 10 9,75 10,25 1,6 12 11,5 12,5 14 13,5 14,5 2,6 3,1 16 15,5 16,5 1,63 2,1 18 17,5 18,5 20 19,5 20,5 3,15 4,15 5,15 22 21,5 22,5 24 23,5 24,5 2,65 6,15 26 25,5 26,5 2,15 4,2 5,2 28 27,
31、5 28,5 8,2 30 29,5 30,5 3,2 6,25 32 31,5 32,5 8,25 35 34,5 35,5 4,25 10,2 40 39,5 40,5 5,25 8,3 12,25 45 44,5 45,5 16,25 20,25 25,25 50 49,5 50,5 6,3 10,3 55 54,25 55,75 4,3 8,35 12,3 16,3 60 59,25 60,75 5,3 20,3 25,3 65 64,25 65,75 10,4 70 69,25 70,75 12,4 16,4 75 74,25 75,75 6,35 80 79,25 80,75 20
32、,4 25,4 85 84,25 85,75 8,4 90 89,25 90,75 10,45 95 94,25 95,75 100 99,25 100,75 120 119,25 120,75 12,5 16,5 140 139,25 140,75 10,4 20,5 25,5 160 159,25 160,75 180 179,25 180,75 200 199,25 200,75 a Applies only to grooved pins made from steel as shown in clause 5. b The range of commercial lengths is
33、 between the stepped lines. c The expanded diameter d 2applies 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 customer and supplier. d For testing d 2 , a G
34、O/NO GO ring gauge should be used. +0,05 0ENISO8742:1997 BSI 04-1999 3 4 Application The diameter of the hole into which the groove pin is to be inserted shall be equal to the nominal diameter d 1of the mating pin and to tolerance classH11. 5 Requirements and reference International Standards See Ta
35、ble 2. 6 Designation EXAMPLE 1 A one-third-length centre grooved steel pin with nominal diameter d 1= 6 mm and nominal length l = 50 mm is designated as follows: Grooved pin ISO8742 6 50 St EXAMPLE 2 A one-third-length centre grooved austenitic stainless steel pin of grade A1, with nominal diameter
36、d 1= 6 mm and nominal length l = 50 mm is designated as follows: Grooved pin ISO8742 6 50 A1 Table 2 Requirements and reference International Standards Material a Steel (St) Austenitic stainless steel Hardness 125 HV30 to 245 HV30 A1 in accordance with ISO 3506-1, hardness 210 HV30 to 280 HV30 Groov
37、es Form of groove at the discretion of the supplier. Plain, i.e. pins to be supplied in natural finish treated with a protective lubricant, unless otherwise specified by agreement between customer and supplier. Surface finish Preferred coatings are black oxide, phosphate coating or zinc plating with
38、 chromate conversion coating (see ISO 9717 and ISO 4042). Plain, i.e. pins to be supplied in natural finish. Other coatings as agreed between customer and supplier. All tolerances shall apply prior to the application of a plating or coating. Workmanship Pins shall be free of irregularities or detrim
39、ental defects. Shear strength test The test shall be in accordance with ISO8749. Acceptability The acceptance procedure is covered in ISO3269. a Other materials as agreed between customer and supplier.ENISO8742:1997 4 BSI 04-1999 Annex ZA (normative) Normative references to international publication
40、s 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 publications are listed hereafter. For dated references, subsequent amendm
41、ents 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 ISO 8749 1986 Pins and grooved pins Sheartest EN 2
42、8749 19925 blankBS EN ISO 8742:1998 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Char
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