1、BRITISH STANDARD BS EN ISO 8747:1998 Grooved pins with countersunk head The European Standard EN ISO 8747:1997 has the status of a British Standard ICS 21.060.50BS EN ISO 8747:1998 This British Standard, having been prepared under the directionof the Engineering SectorBoard, was published underthe a
2、uthority of the Standards Board and comes intoeffect on 15 May 1998 BSI 04-1998 ISBN 0 580 29058 1 National foreword This British Standard is the English language version of EN ISO8747:1997. It is identical with ISO8747:1997. It supersedes BSEN28747:1992 which is withdrawn. The UK participation in i
3、ts 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 enquiries
4、 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 Attention
5、 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 document may
6、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 British St
7、andards 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, theEN ISO title page, page 2, the ISO title page, page i
8、i, pages 1 to 3 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 CommentsBS EN ISO8747:1998 BSI 04-1999 i Contents
9、Page National foreword Inside front cover Foreword 2 Foreword ii Text of ISO 8747 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8747 November 1997 ICS 21.060.50 Supersedes EN 28747:1992 Descriptors: SeeISO document English version Grooved pins with countersunk head (ISO8747:1997)
10、 Clous cannels tte fraise (ISO 8747:1997) Senkkerbngel (ISO8747:1997) This European Standard was approved by CEN on 23 October 1997. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national sta
11、ndard 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. This European Standard exists in three official versions (English, French, German). A version in any other
12、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, CzechRepublic, Denmark, Finland, France, Germany, Greec
13、e, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights
14、of exploitation in any form and by any means reserved worldwide for CENnationalMembers. Ref. No. EN ISO 8747:1997 EEN ISO8747:1997 BSI 04-1999 2 Foreword The text of the International Standard ISO8747:1997 has been prepared by Technical Committee ISO/TC2 “Fasteners” in collaboration with Technical C
15、ommittee CEN/TC185 “Threaded and non-threaded mechanical fasteners and accessories”, the secretariat of which is held by DIN. This European Standard supersedes EN28747:1992. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endo
16、rsement, 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 organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cze
17、chRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO8747:1997 has been approved by CEN as a European Standard without
18、 any modifications. Contents Page Foreword 2 1 Scope 1 2 Normative references 1 3 Dimensions 1 4 Application 2 5 Requirements and reference International Standards 3 6 Designation 3 Figure 1 1 Table 1 Dimensions 2 Table 2 Requirements and reference International Standards 3EN ISO8747:1997 ii BSI 04-
19、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 a subject for whic
20、h 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 Commission (IEC) on all ma
21、tters 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 Standard ISO8747
22、was prepared by Technical Committee ISO/TC 2, Fasteners. This second edition cancels and replaces the first edition (ISO8747:1986), which has been technically revised. Descriptors: Fasteners, steel products, pins (mechanics), grooved pins, specifications, characteristics, dimensions, designation.EN
23、ISO8747:1997 BSI 04-1999 1 1 Scope This International Standard specifies the characteristics of countersunk head grooved pins which have three equally spaced grooves impressed longitudinally on their exterior surface, with nominal diameter, d 1 , from1,4mm to20mm inclusive. The displaced material to
24、 each side of the grooves forming an expanded diameter, d 2 , which is larger than the nominal diameter, d 1 , will cause a non-positive locking fit when these grooved pins are forced into a drilled hole equal to the nominal diameter d 1(seeclause4). 2 Normative references The following standards co
25、ntain 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 agreements based on this International Standard are encouraged to investi
26、gate 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 4042: 1) , Fasteners Electroplated coatings. ISO 9717:1990, Phosphate
27、conversion coatings for metals Method of specifying requirements. 3 Dimensions SeeFigure 1 and Table 1. NOTETypes A and B are left to the discretion of the supplier, or specifically ordered by the customer. 1) To be published. (Revision of ISO 4042:1989) Figure 1 EN ISO8747:1997 2 BSI 04-1999 Table
28、1 Dimensions 4 Application The diameter of the hole into which the grooved pin is to be inserted shall be equal to the nominal diameter d 1of the mating pin and to tolerance class H11. Dimensions in millimetres d 1 nom. 1,4 1,6 2 2,5 3 4 5 6 8 10 12 16 20 max. 1,40 1,60 2,00 2,500 3,000 4,0 5,0 6,0
29、8,00 10,00 12,0 16,0 20,0 min. 1,35 1,55 1,95 2,425 2,925 3,9 4,9 5,9 7,85 9,85 11,8 15,8 19,8 d k max. 2,7 3,0 3,7 4,6 5,45 7,25 9,1 10,8 14,4 16,0 19,0 26,0 31,5 min. 2,3 2,6 3,3 4,2 4,95 6,75 8,5 10,2 13,6 14,9 17,7 23,7 30,7 c 0,42 0,48 0,6 0,75 0,9 1,2 1,5 1,8 2,4 3,0 3,6 4,8 6 l a Expanded dia
30、meter, d 2 b,c nom. min. max. + 0,05 0 0,05 0,1 3 2,8 3,2 4 3,7 4,3 1,5 5 4,7 5,3 1,7 6 5,7 6,3 2,15 2,7 8 7,7 8,3 3,2 10 9,7 10,3 4,25 12 11,6 12,4 5,25 16 15,6 16,4 6,3 20 19,5 20,5 8,3 25 24,5 25,5 10,35 12,35 30 29,5 30,5 16,4 20,5 35 34,5 35,5 40 39,5 40,5 a The range of commercial lengths is b
31、etween the stepped lines. b The expanded diameter d 2applies only to pins made from cold-heading steel. 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. c For testing d 2 , a GO/NO GO ri
32、ng gauge should be used.EN ISO8747:1997 BSI 04-1999 3 Table 2 Requirements and reference International Standards 5 Requirements and reference International Standards SeeTable 2. 6 Designation EXAMPLE A countersunk head grooved steel pin with nominal diameter d 1= 6mm and nominal length l = 30mm is d
33、esignated as follows: Grooved pin ISO8747 6 30 St If in special cases, one of the types, for example typeA, specified in clause 3 is required this shall be given in the designation, as follows: Grooved pin ISO8747 6 30 A St Material Cold-heading steel (St), hardness 125 HV30 to 245 HV30. Other mater
34、ials as agreed between customer and supplier. Grooves Shape 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
35、 black oxide, phosphate coating or zinc plating with chromate conversion coating (seeISO 9717 and ISO 4042). 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
36、ental defects. Acceptability The acceptance procedure is covered in ISO3269.BS EN ISO 8747:1998 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
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