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1、BRITISH STANDARD BS EN ISO 8741:1998 Grooved pins Half-length reverse-taper grooved The European Standard EN ISO 8741:1997 has the status of a British Standard ICS 21.060.50 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 8741:1998
2、 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 May 1998 BSI 04-1999 ISBN 0 580 29068 9 National foreword This British Standard is the English language version of EN
3、 ISO 8741:1997. It is identical with ISO 8741:1997. It supersedes BS EN 28741:1992 which is withdrawn.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 re
4、sponsibility to: aid enquirers to understand the text; present to the responsible 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.
5、A list of organizations represented on this subcommittee can be obtained on request 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 Europ
6、ean publications. The British Standards which implement these international or European publications 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 Bri
7、tish Standard does not purport to include all the necessary provisions 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 fro
8、nt cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, 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
9、cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 8741:1998 BSI 04-1999i Contents Page National forewordInside front cover Foreword2 Forewordii Text of EN ISO 87411 Lice
10、nsed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8741 November 1997 ICS 2
11、1.060Supersedes EN 28741:1992 Descriptors: See ISO document English version Grooved pins Half-length reverse-taper grooved (ISO 8741:1997) Goupilles canneles cannelures progressives renverses sur la moiti de la longueur non dbouchantes (ISO 8741:1997) Steckkerbstifte (ISO 8741:1997) This European St
12、andard was approved by CEN on 18 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 standard without any alteration. Up-to-date lists and bibliographical references concerni
13、ng 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 translation under the responsibility of a CEN member into its own lan
14、guage 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, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,
15、 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 form and by any means reserved worldwide for CEN national Memb
16、ers. Ref. No. EN ISO 8741:1997 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8741:1997 BSI 04-1999 2 Foreword The text of the International Standard ISO 8741:1997 has been prepared by Technical Committee ISO/TC 2 “Fasteners” in co
17、llaboration 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 EN 28741:1992. This European Standard shall be given the status of a national standard, either by publication o
18、f 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 organizations of the following countries are bound to implement this European S
19、tandard: Austria, Belgium, 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 8741:1997 was approved by CEN as
20、a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA (normative). Contents Page Foreword2 1Scope1 2Normative references1 3Dimensions1 4Application3 5Requirements and reference international standards3 6Designation3 Annex ZA (normati
21、ve) Normative references to international publications with their relevant European publications4 Figure 11 Table 1 Dimensions2 Table 2 Requirements and reference International Standards3 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licen
22、sed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8741:1997 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 In
23、ternational Standards is normally carried 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
24、with ISO, also take part in the work. 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
25、 an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 8741 was prepared by Technical Committee ISO/TC 2, Fasteners. This second edition cancels and replaces the first edition (ISO 8741:1986), which has been technically revised.
26、Descriptors: Fasteners, steel products, pins (mechanics), grooved pins, specifications, characteristics, dimensions, designation. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8741:1997 BSI 04-19991 1 Scope This International Standa
27、rd specifies the characteristics of half-length reverse taper grooved pins made of steel or austenitic stainless steel which have three equally spaced grooves impressed longitudinally on their exterior surface, with nominal diameter, d1, from 1,5 mm to 25 mm inclusive. The displaced material to each
28、 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 provi
29、sions 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 the po
30、ssibility 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 3506-1:1997, Corrosion-resistant stainless steel fasteners Part 1: Bolts, screws
31、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 Figure 1 and Table 1. 1) To be published. (Revision of ISO 4042:1989) 1) Chamfer perm
32、issible 2) The grooving angle 70 applies only to grooved pins made from steel as shown in clause 5. The grooving angle may be modified depending on resilience of material. Figure 1 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8741:
33、1997 2 BSI 04-1999 Table 1 Dimensions Dimensions in millimetres d1nom.1,522,5345681012162025 tol.h9h11 a0,20,25 0,330,40,50,630,811,21,622,53 Minimum shear strength, doublea KN 1,62,844,46,411,317,625,445,270,4101,8181283444 lbExpanded diameter, d2cd nom.min.max. 0,05 0,1 87,758,25 1,6 109,7510,252,
34、63,14,155,15 1211,512,52,1 1413,514,53,156,15 1615,516,51,634,25,28,2 1817,518,52,65 2019,520,56,2510,2 2221,522,53,2 2423,524,52,158,25 2625,526,52,74,255,25 2827,528,58,312,25 16,25 3029,530,53,256,310,320,25 25,25 3231,532,5 3534,535,58,3512,316,3 4039,540,520,325,3 4544,545,510,4 5049,550,54,35,
35、312,416,420,425,4 5554,2555,75 6059,2560,758,4 6564,2565,756,35 7069,2570,7510,45 7574,2575,75 8079,2580,7512,516,5 8584,2585,7520,525,5 9089,2590,758,35 9594,2595,75 10099,25100,75 120119,25120,7510,4 140139,25140,75 160159,25160,7512,45 16,45 180179,25180,7520,45 25,45 200199,25200,75 a Applies on
36、ly to grooved pins made from steel as shown in clause 5. b The range of commercial lengths is between the stepped lines. c The expanded diameter d2 applies 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
37、 the given values and should be agreed between customer and supplier. d For testing d2, a GO/NO GO ring gauge should be used. 0,05+ 0 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8741:1997 BSI 04-19993 4 Application The diameter of
38、 the hole into which the groove 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. 6 Designation EXAMPLE 1 A half-length reverse taper grooved steel pin with nominal diameter
39、d1= 6 mm and nominal length l = 50 mm is designated as follows: Grooved pin ISO 8741 6 50 St EXAMPLE 2 A half-length reverse taper grooved austenitic stainless steel pin of grade A1, with nominal diameter d1= 6 mm and nominal length l = 50 mm is designated as follows: Grooved pin ISO 8741 6 50 A1 Ta
40、ble 2 Requirements and reference International Standards Steel (St)Austenitic stainless steel MaterialaHardness 125 HV30 to 245 HV30A1 in accordance with ISO 3506-1, hardness 210 HV30 to 280 HV30 GroovesForm of groove at the discretion of the supplier. Surface finish Plain, i.e. pins to be supplied
41、in natural finish treated with a protective lubricant, unless otherwise specified by agreement between customer and supplier. Plain, i.e. pins to be supplied in natural finish. Preferred coatings are black oxide, phosphate coating or zinc plating with chromate conversion coating (see ISO 9717 and IS
42、O 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. Shear strength test The test shall be in accordance with ISO 8749. AcceptabilityThe ac
43、ceptance procedure is covered in ISO 3269. a Other materials as agreed between customer and supplier. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8741:1997 4 BSI 04-1999 Annex ZA (normative) Normative references to international p
44、ublications 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, subsequ
45、ent amendments 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. PublicationYearTitleENYear ISO 87491986Pins and grooved pins Shear test
46、EN 287491992 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI blank Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 8741:1998 BSI 389 Chiswick High Road London W4 4AL BSI Br
47、itish Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of
48、 British Standards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary o
49、f the technical committee responsible, the identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards. Buying standards Orders for all BSI, international and foreign standards publications should be addressed to Customer Services. Tel: 020 8996 9001. Fax: 020 8996 7001. In response to orders for international standards, it is BSI