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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 21.060.50 BS EN ISO 8746:1998 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the aut
2、hority 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 EN ISO 8746:1997. It is identical with ISO 8746:1997. It supersedes BS EN 28746:1992 which is withdrawn. The UK participation i
3、n 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 enquir
4、ies 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 Attent
5、ion 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 m
6、ay 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
7、 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, pa
8、ge ii, pages 1 to 3 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.DateComments BS EN ISO 8746:1998 BSI 04-1999i Conte
9、nts Page National forewordInside front cover Foreword2 Forewordii Text of ISO 87461 ii blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8746 November 1997 ICS 21.060.50Supersedes EN 28746:1992 Descriptors: See ISO document English version Grooved pins with round head (ISO 8746:1997) Cl
10、ous cannels tte ronde (ISO 8746:1997)Halbrundkerbngel (ISO 8746:1997) 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, Czech Republic, Denmark, Finland, France, Germany, Gree
13、ce, 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 CEN national Members. Ref. No. EN ISO 8746:1997 E EN ISO 8746:1997 2 BSI 04-1999 Foreword The text of the International Standard ISO 8746:1997 has been prepared by Technical Committee ISO/TC 2 “Fasteners” in collaboration with Tech
15、nical Committee CEN/TC 185 “Threaded and non-threaded mechanical fasteners and accessories”, the secretariat of which is held by DIN. This European Standard supersedes EN 28746:1992. This European Standard shall be given the status of a national standard, either by publication of an identical text o
16、r 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 organizations of the following countries are bound to implement this European Standard: Austria, Bel
17、gium, Czech Republic, 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 ISO 8746:1997 has been approved by CEN as a European Stand
18、ard without any modifications. Contents Page Foreword2 1Scope1 2Normative references1 3Dimensions1 4Application2 5Requirements and reference International Standards2 6Designation3 Figure 11 Table 1 Dimensions2 Table 2 Requirements and reference International Standards2 EN ISO 8746:1997 ii BSI 04-199
19、9 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 which a
20、 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 matte
21、rs 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 ISO 8746 w
22、as prepared by Technical Committee ISO/TC 2, Fasteners. This second edition cancels and replaces the first edition (ISO 8746:1986), which has been technically revised. Descriptors: Fasteners, steel products, pins (mechanics), grooved pins, specifications, characteristics, dimensions, designation. EN
23、 ISO 8746:1997 BSI 04-19991 1 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, d1, from 1,4 mm to 20 mm inclusive. The displaced material to ea
24、ch side of the grooves forming an expanded diameter, d2, which is larger than the nominal diameter d1 will cause a non-positive locking fit when these grooved pins are forced into a drilled hole equal to the nominal diameter d1 (see clause 4). 2 Normative references The following standards contain p
25、rovisions 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 investigate th
26、e 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 conversio
27、n coatings for metals Method of specifying requirements. 3 Dimensions See Figure 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 ISO 8746:1997 2 BSI 04-1999 Table 1 Dimen
28、sions 4 Application The diameter of the hole into which the grooved pin is to be inserted shall be equal to the nominal diameter, d1, of the mating pin and to tolerance class H11. 5 Requirements and reference International Standards See Table 2. Table 2 Requirements and reference International Stand
29、ards Dimensions in millimetres nom.1,41,622,53456810121620 d1max.1,401,602,002,500 3,000 4,05,06,08,00 10,00 12,016,020,0 min.1,351,551,952,425 2,925 3,94,95,97,859,85 11,815,819,8 dkmax.2,63,03,74,65,457,259,110,814,416,019,025,032,0 min.2,22,63,34,24,956,758,510,213,614,917,723,730,7 kmax.0,91,11,
30、31,61,952,553,153,755,07,48,410,913,9 min.0,70,91,11,41,652,252,853,454,66,57,510,013,0 r1,41,61,92,42,83,84,65,77,589,51316,5 c0,420,480,60,750,91,21,51,82,43,03,64,86 la Expanded diameter, d2b, c nom.min.max. 0,05 0,1 32,83,2 43,74,31,5 54,75,31,72,15 65,76,32,7 87,78,33,2 109,710,34,25 1211,612,4
31、5,25 1615,616,46,3 2019,520,58,3 2524,525,510,35 12,35 3029,530,516,420,5 3534,535,5 4039,540,5 a The range of commercial lengths is between the stepped lines. b The expanded diameter d2 applies only to pins made from cold-heading steel. For other materials, for example stainless steel, a reduction
32、amount shall be subtracted from the given values and should be agreed between customer and supplier. c For testing d2, a GO/NO GO ring gauge should be used. MaterialCold-heading steel (St), hardness 125 HV30 to 245 HV30 Other materials as agreed between customer and supplier. GroovesForm of groove a
33、t 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 finishPreferred coatings are black oxide, phosphate coating or zinc plating with chromate conversio
34、n coating (see ISO 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. WorkmanshipPins shall be free of irregularities or detrimental defects. AcceptabilityThe acceptance procedure is covered in ISO
35、3269. +0,05 0 EN ISO 8746:1997 BSI 04-19993 6 Designation EXAMPLE A round head grooved steel pin with nominal diameter d1= 6 mm and nominal length l = 30 mm is designated as follows: Grooved pin ISO 8746 6 30 St If in special cases, one of the types, for example type A, specified in clause 3 is requ
36、ired this shall be given in the designation as follows: Grooved pin ISO 8746 6 30 A St BS EN ISO 8746:1998 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards
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