1、BRITISH STANDARD BS EN ISO 8746:1998 Grooved pins with round head The European Standard EN ISO 8746:1997 has the status of a British Standard ICS 21.060.50BSEN ISO 8746:1998 This British Standard, having been prepared under the directionof the Engineering SectorBoard, was published underthe authorit
2、y of the Standards Board and comes into effect on 15 May 1998 BSI 04-1999 ISBN 0 580 29059 X National foreword This British Standard is the English language version of ENISO8746:1997. It is identical with ISO8746:1997. It supersedes BSEN28746:1992 which is withdrawn. The UK participation in its prep
3、aration 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 on the
4、 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 is dra
5、wn 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 be foun
6、d 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 Standards
7、 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, theENISOtitle page, page 2, theISOtitle page, page ii, pages1 t
8、o 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 CommentsBSENISO8746:1998 BSI 04-1999 i Contents Page National
9、foreword Inside front cover Foreword 2 Foreword ii Text of ISO 8746 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM ENISO8746 November1997 ICS21.060.50 Supersedes EN28746:1992 Descriptors: See ISO document English version Grooved pins with round head (ISO 8746:1997) Clous cannels tte rond
10、e (ISO8746:1997) Halbrundkerbngel (ISO8746:1997) This European Standard was approved by CEN on23 October1997. 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 standard without any alter
11、ation. 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 language made by transl
12、ation 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, Greece, Iceland, Ireland, It
13、aly, 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 of exploitation in any
14、form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8746:1997 EENISO8746:1997 2 BSI 04-1999 Foreword The text of the International Standard ISO8746:1997 has been prepared by Technical Committee ISO/TC2 “Fasteners” in collaboration with Technical Committee CEN/TC185 “Th
15、readed and non-threaded mechanical fasteners and accessories”, the secretariat of which is held by DIN. This European Standard supersedes EN28746:1992. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest
16、 by May1998, and conflicting national standards shall be withdrawn at the latest by May1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Fi
17、nland, 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 ISO8746:1997 has been approved by CEN as a European Standard without any modifications. Con
18、tents Page Foreword 2 1 Scope 1 2 Normative references 1 3 Dimensions 1 4 Application 2 5 Requirements and reference International Standards 2 6 Designation 3 Figure 1 1 Table 1 Dimensions 2 Table 2 Requirements and reference International Standards 2ENISO8746:1997 ii BSI 04-1999 Foreword ISO (the I
19、nternational 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 which a technical committee
20、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. ISOcollaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical
21、 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 least75% of the member bodies casting a vote. International Standard ISO8746 was prepared by Technical
22、Committee ISO/TC2, Fasteners. This second edition cancels and replaces the first edition (ISO8746:1986), which has been technically revised. Descriptors: Fasteners, steel products, pins (mechanics), grooved pins, specifications, characteristics, dimensions, designation.ENISO8746:1997 BSI 04-1999 1 1
23、 Scope This International Standard specifies the characteristics of round 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 each side of the grooves forming a
24、n 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 d 1(see clause4). 2 Normative references The following standards contain provisions which, through refere
25、nce 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 applying the m
26、ost 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 conversion coatings for metals Method
27、of specifying requirements. 3 Dimensions See Figure 1 andTable 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 ISO4042:1989) Figure 1 ENISO8746:1997 2 BSI 04-1999 Table 1 Dimensions 4 Application The diameter
28、of the hole into which the grooved pin is to be inserted shall be equal to the nominal diameter, d 1 , of the mating pin and to tolerance classH11. 5 Requirements and reference International Standards See Table 2. Table 2 Requirements and reference International Standards Dimensions in millimetres n
29、om. 1,4 1,6 2 2,5 3 4 5 6 8 10 12 16 20 d 1 max. 1,40 1,60 2,00 2,500 3,000 4,0 5,0 6,0 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. 2,6 3,0 3,7 4,6 5,45 7,25 9,1 10,8 14,4 16,0 19,0 25,0 32,0 min. 2,2 2,6 3,3 4,2 4,95 6,75 8,5 10,2 13,6 14,
30、9 17,7 23,7 30,7 k max. 0,9 1,1 1,3 1,6 1,95 2,55 3,15 3,75 5,0 7,4 8,4 10,9 13,9 min. 0,7 0,9 1,1 1,4 1,65 2,25 2,85 3,45 4,6 6,5 7,5 10,0 13,0 r 1,4 1,6 1,9 2,4 2,8 3,8 4,6 5,7 7,5 8 9,5 13 16,5 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 diameter, d 2 b, c nom. min. max. 0
31、,05 0,1 3 2,8 3,2 4 3,7 4,3 1,5 5 4,7 5,3 1,7 2,15 6 5,7 6,3 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 between the stepped lines. b The expanded
32、 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 ring gauge should be used. Material Cold-h
33、eading steel (St), hardness 125 HV30 to 245 HV30 Other materials as agreed between customer and supplier. Grooves 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
34、customer and supplier. Surface finish Preferred coatings are black oxide, phosphate coating or zinc plating with chromate conversion coating (see ISO9717 and ISO4042). Other coatings as agreed between customer and supplier. All tolerances shall apply prior to the application of a plating or coating.
35、 Workmanship Pins shall be free of irregularities or detrimental defects. Acceptability The acceptance procedure is covered in ISO 3269. +0,05 0ENISO8746:1997 BSI 04-1999 3 6 Designation EXAMPLE A round head grooved steel pin with nominal diameter d 1 =6mm and nominal length l =30mm is designated as
36、 follows: Grooved pin ISO 8746 6 30 St If in special cases, one of the types, for example type A, specified in clause3 is required this shall be given in the designation as follows: Grooved pin ISO 8746 6 30 A StBS EN ISO 8746:1998 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitut
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