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1、BRITISH STANDARD BS EN ISO 8750:1998 Spring-type straight pins Coiled, standard duty The European Standard EN ISO 8750:1997 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 8750:199
2、8 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 1997 BSI 05-1999 ISBN 0 580 29066 2 National foreword This British Standard is the English language version of E
3、N ISO 8750:1997. It is identical with ISO 8750:1997. It supersedes BS EN 28750:1992 which is withdrawn.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 r
4、esponsibility 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 Euro
6、pean publications. The British Standards which implement international or European publications referred to in this document 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 Ele
7、ctronic Catalogue. A British 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
8、document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, page 2, the ISO title page, pages ii to iv, pages 1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be
9、indicated in the amendment table on the inside front 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 8750:1998 BSI 05-1999i Contents Page National forewordInside front
10、 cover Foreword 2 Foreword iii Text of ISO 87501 Licensed 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 EURO
11、PENNE EUROPISCHE NORM EN ISO 8750 December 1997 ICS 21.060Supersedes EN 28750:1992 Descriptors: See ISO document English version Spring-type straight pins Coiled, standard duty (ISO 8750:1997) Goupilles lastiques spirales Srie moyenne (ISO 8750:1997) Spiralspannstifte Regelausfhrung (ISO 8750:1997)
12、This European Standard was approved by CEN on 17 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 ref
13、erences 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 translation under the responsibility of a CEN member
14、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, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal
15、, 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 form and by any means reserved worldwide for C
16、EN national Members. Ref. No. EN ISO 8750:1997 E Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8750:1997 BSI 05-1999 2 Foreword The text of the International Standard ISO 8750:1997 has been prepared by Technical Committee ISO/TC 2 “
17、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 EN 28750:1992. This European Standard shall be given the status of a national standard, either
18、by publication of an identical text or by endorsement, at the latest by June 1998, and conflicting national standards shall be withdrawn at the latest by June 1998. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to impleme
19、nt this European Standard: 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 8750:1997 was a
20、pproved by CEN as 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 6Designation4
21、 Annex A (informative) BibliographyInside back cover Annex ZA (normative) Normative references to international publications with their relevant European Inside back cover publications Figure 11 Table 1 Dimensions2 Table 2 Requirements and reference International Standards3 Licensed Copy: sheffieldu
22、n sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8750:1997 ii BSI 05-1999 Foreword ISO (the International Organization for Standardization) is a worldwid
23、e 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 has been established has the right to be represented on that
24、 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 matters of electrotechnical standardization. Draft International Standards adopted by
25、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 8750 was prepared by Technical Committee ISO/TC 2, Fasteners. This second edition cance
26、ls and replaces the first edition (ISO 8750:1987), which has been technically revised. Annex A of this International Standard is for information only. Descriptors: Fasteners, steel products, pins (mechanics), straight pins, spring pins, specifications, characteristics, dimensions, designation. Licen
27、sed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8750:1997 BSI 05-19991 1 Scope This International Standard specifies the characteristics of standard duty coiled spring-type straight pins made of steel or of austenitic or martensitic stainl
28、ess steel, with nominal diameter, d1, from 0,8 mm to 20 mm inclusive. NOTESpring-type straight pins, coiled, heavy duty and spring type straight pins, coiled, light duty, are the subjects of ISO 8748 and ISO 8751 respectively. 2 Normative references The following standards contain provisions which,
29、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 possibility of
30、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:, Fasteners Electroplated coatings1). ISO 8749:1986, Pins and grooved pins Shear test. 3
31、Dimensions See Figure 1 and Table 1. 1) To be published. (Revision of ISO 4042:1989) Figure 1 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8750:1997 2 BSI 05-1999 Table 1 Dimensions Dimensions in millimetres nom.0,811,21,522,533,54
32、5681012141620 d1before mounting max.0,91 1,15 1,35 1,73 2,25 2,78 3,30 3,84 4,45,506,508,63 10,80 12,8514,9517,0021,1 min.0,85 1,05 1,25 1,62 2,13 2,65 3,15 3,67 4,25,256,258,30 10,35 12,4014,4516,4520,4 d2before mounting max. 0,75 0,95 1,15 1,41,92,42,93,43,94,855,857,89,75 11,713,615,619,6 a.0,3 0
33、,30,40,50,70,70,911,11,31,522,533,544,5 s 0,07 0,08 0,10,13 0,17 0,21 0,25 0,29 0,330,420,50,670,8411,21,31,7 Minimum shear strength, double kN a 0,40,60,91,45 2,53,95,57,59,61522396289120155250 b 0,30,45 0,65 1,05 1,92,94,25,77,611,516,8304867 lc nom.min.max. 43,754,25 54,755,25 65,756,25 87,758,25
34、 109,7510,25 1211,512,5 1413,514,5 1615,516,5 1817,518,5 2019,520,5 2221,522,5 Range 2423,524,5 2625,526,5 2827,528,5 of 3029,530,5 3231,532,5 3534,535,5 commercial 4039,540,5 4544,545,5 5049,550,5 length 5554,2555,75 6059,2560,75 6564,2565,75 7069,2570,75 7574,2575,75 8079,2580,75 8584,2585,75 9089
35、,2590,75 9594,2595,75 10099,25100,75 120119,25120,75 140139,25140,75 160159,25160,75 180179,25180,75 200199,25200,75 a Applies to steel and martensitic corrosion resistant steel products. b Applies to austenitic stainless steel products. c For nominal lengths above 200 mm, steps of 20 mm. Licensed C
36、opy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8750:1997 BSI 05-19993 4 Application The diameter of the hole into which the spring pin is to be inserted shall be equal to the nominal diameter d1 of the mating pin and to tolerance class H12. Fo
37、r pins with nominal diameter 1,2 mm and below, the tolerance class of the hole diameter shall be H10. 5 Requirements and reference International Standards See Table 2. Table 2 Requirements and reference International Standards SteelAustenitic stainless steel Martensitic stainless steel StAC All pin
38、diametersAlternative for pin diameters d1 12 mm Chemical composition limits (check analysis) % Chemical composition limits (check analysis) % C $ 0,64C $ 0,38C # 0,15C # 0,15 Mn $ 0,60Mn $ 0,70Mn# 2,00Mn # 1,00 MaterialaSi $ 0,15Si $ 0,20Si # 1,50Si # 1,00 Cr bCr $ 0,80Cr 16 to 20Cr 11,5 to 14 V $ 0
39、,15Ni 6 to 12Ni # 1,00 P # 0,04P # 0,035P # 0,045P # 0,04 S # 0,05S # 0,04S # 0,03S # 0,03 Mo # 0,8 Hardened and tempered to a Vickers hardness of 420 HV30 to 545 HV30 Cold workedHardened and tempered to a Vickers hardness of 460 HV30 to 560 HV30 Surface finish Plain, i.e. pins to be supplied in nat
40、ural finish, treated with a protective lubricant, unless otherwise specified by agreement between customer and supplier. If pins are surface coated appropriate plating or coating processes should be employed to avoid hydrogen embrittlement. When pins are electroplated or phosphate-coated, they shall
41、 be suitably treated immediately after plating or coating to obviate detrimental hydrogen embrittlement although freedom from hydrogen embrittlement is not absolutely guaranteed (see ISO 4042). Plain, i.e. pins to be supplied in natural finish All tolerances shall apply prior to the application of a
42、 plating or coating. Workmanship Pins shall be free of irregularities or detrimental defects. No burrs shall appear on any part of the pin. Shear strength test The test shall be in accordance with ISO 8749. AcceptabilityThe acceptance procedure is covered in ISO 3269. a Other materials as agreed bet
43、ween customer and supplier. b Use of Cr is optional. Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8750:1997 4 BSI 05-1999 6 Designation EXAMPLE 1 A steel spring-type straight pin (St), coiled, standard duty, with nominal diameter d
44、1= 6 mm and nominal length l = 30 mm is designated as follows: Spring pin ISO 8750 6 30 St EXAMPLE 2 An austenitic stainless steel spring-type straight pin (A), coiled, standard duty, with nominal diameter d1= 6 mm and nominal length l = 30 mm is designated as follows: Spring pin ISO 8750 6 30 A Lic
45、ensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 8750:1997 BSI 05-1999 Annex A (informative) Bibliography 1 ISO 8748:1997, Spring-type straight pins Coiled, heavy duty. 2 ISO 8751:1997, Spring-type straight pins Coiled, light duty. Annex
46、ZA (normative) Normative references to international publications 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 publicatio
47、ns are listed hereafter. For dated references, subsequent 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. PublicationYearTi
48、tleENYear ISO 87491986Pins and grooved pins Shear testEN 287491992 Licensed Copy: sheffieldun sheffieldun, na, Sat Nov 18 07:33:16 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 8750:1998 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national
49、 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 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 wou