1、BRITISH STANDARDBS EN ISO 8750:2007Spring-type straight pins Coiled, standard dutyThe European Standard EN ISO 8750:2007 has the status of a British StandardICS 21.060.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g4
2、0g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 8750:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2007 BSI 2007ISBN 978 0 580 55833 7National forewordThis British Standard is the UK implementat
3、ion of EN ISO 8750:2007. It supersedes BS EN ISO 8750:1998 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee FME/9, Nuts, bolts and accessories/steering committee.A list of organizations represented on this committee can be obtained on request to its sec
4、retary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDA
5、RDNORME EUROPENNEEUROPISCHE NORMEN ISO 8750April 2007ICS 21.060.50 Supersedes EN ISO 8750:1997 English VersionSpring-type straight pins - Coiled, standard duty (ISO8750:2007)Goupilles lastiques spirales - Srie moyenne (ISO8750:2007)Spiralspannstifte - Regelausfhrung (ISO 8750:2007)This European Stan
6、dard was approved by CEN on 22 March 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning suc
7、h nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language a
8、nd notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg
9、, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of ex
10、ploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 8750:2007: EForeword This document (EN ISO 8750:2007) has been prepared by Technical Committee ISO/TC 2 “Fasteners“ in collaboration with Technical Committee CEN/TC 185 “Fasteners”, the secretariat of
11、which is held by DIN. 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 by October 2007, and conflicting national standards shall be withdrawn at the latest by October 2007. This document supersedes EN
12、 ISO 8750:1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
13、Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 8750:2007 has been approved by CEN as EN ISO 8750:2007 without any modifications. EN ISO 8750:20
14、07Reference numberISO 8750:2007(E)INTERNATIONAL STANDARD ISO8750Third edition2007-04-15Spring-type straight pins Coiled, standard duty Goupilles lastiques spirales Srie moyenne EN ISO 8750:2007ii iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of nation
15、al 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 committee. Internatio
16、nal 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. International Standards are drafted in accordance with the rule
17、s given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. 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 l
18、east 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 8750 was prepared by Technical Committee ISO/TC 2,
19、 Fasteners, Subcommittee SC 10, Product standards for fasteners. This third edition cancels and replaces the second edition (ISO 8750:1997), which has been technically revised. EN ISO 8750:2007blank1Spring-type straight pins Coiled, standard duty 1 Scope This International Standard specifies the cha
20、racteristics of coiled, standard duty spring-type straight pins made of steel or of austenitic or martensitic stainless steel, with a nominal diameter, d1, from 0,8 mm to 20 mm inclusive. NOTE Spring-type straight pins, coiled, heavy duty, and spring type straight pins, coiled, light duty, are the s
21、ubjects of ISO 8748 and ISO 8751, respectively. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any
22、 amendments) applies. ISO 286-2, ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts ISO 3269, Fasteners Acceptance inspection ISO 4042, Fasteners Electroplated coatings ISO 6507-1, Metallic materials Vickers hardness test Part 1: Test
23、method ISO 8749, Pins and grooved pins Shear test 3 Dimensions See Figure 1 and Table 1. aSwaged chamfer at both ends. Figure 1 EN ISO 8750:20072 Table 1 Dimensions Dimensions in millimetres nom. 0,8 1 1,2 1,5 2 2,5 3 3,5 4 5 6 8 10 12 14 16 20 max. 0,91 1,15 1,35 1,73 2,25 2,78 3,30 3,84 4,4 5,50 6
24、,50 8,63 10,80 12,85 14,95 17,00 21,1d1before mounting min. 0,85 1,05 1,25 1,62 2,13 2,65 3,15 3,67 4,2 5,25 6,25 8,30 10,35 12,40 14,45 16,45 20,4d2before mounting max. 0,75 0,95 1,15 1,4 1,9 2,4 2,9 3,4 3,9 4,85 5,85 7,8 9,75 11,7 13,6 15,6 19,6a 0,3 0,3 0,4 0,5 0,7 0,7 0,9 1 1,1 1,3 1,5 2 2,5 3 3
25、,5 4 4,5 s 0,07 0,08 0,1 0,13 0,17 0,21 0,25 0,29 0,33 0,42 0,5 0,67 0,84 1 1,2 1,3 1,7 a 0,4 0,6 0,9 1,45 2,5 3,9 5,5 7,5 9,6 15 22 39 62 89 120 155 250Minimum shear strength, double, kN b 0,3 0,45 0,65 1,05 1,9 2,9 4,2 5,7 7,6 11,5 16,8 30 48 67 l cnom. min. max. 4 3,75 4,25 5 4,75 5,25 6 5,75 6,2
26、5 8 7,75 8,25 10 9,75 10,25 12 11,5 12,5 14 13,5 14,5 16 15,5 16,5 18 17,5 18,5 20 19,5 20,5 22 21,5 22,5 Range 24 23,5 24,5 26 25,5 26,5 28 27,5 28,5 of 30 29,5 30,5 32 31,5 32,5 35 34,5 35,5 commercial 40 39,5 40,5 45 44,5 45,5 50 49,5 50,5 lengths 55 54,25 55,75 60 59,25 60,75 65 64,25 65,75 70 6
27、9,25 70,75 75 74,25 75,75 80 79,25 80,75 85 84,25 85,75 90 89,25 90,75 95 94,25 95,75 100 99,25 100,75 120 119,25 120,75 140 139,25 140,75 160 159,25 160,75 180 179,25 180,75 200 199,25 200,75 a Applies to steel and martensitic corrosion-resistant steel products. b Applies to austenitic stainless st
28、eel products. c For nominal lengths above 200 mm, steps of 20 mm.EN ISO 8750:200734 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 in accordance with ISO 286-2. For pins with a
29、nominal diameter of 1,2 mm and below, the tolerance class of the hole diameter shall be H10 in accordance with ISO 286-2. 5 Requirements and reference International Standards See Table 2. Table 2 Requirements and reference International Standards Steel Austenitic stainless steel Martensitic stainles
30、s steel St A C All pin diameters Alternative for pin diameters d1 12 mm Chemical composition limits (chemical analysis) % Chemical composition limits (chemical analysis) % C W 0,64 Mn W 0,60 Si W 0,15 CrbP u 0,04 S u 0,05 C W 0,38 Mn W 0,70 Si W 0,20 Cr W 0,80 V W 0,15 P u 0,035 S u 0,04 C u 0,15 Mn
31、 u 2,00 Si u 1,50 Cr 16 to 20 Ni 6 to 12 P u 0,045 S u 0,03 Mo u 0,8 C W 0,15 Mn u 1,00 Si u 1,00 Cr 11,5 to 14 Ni u 1,00 P u 0,04 S u 0,03 Hardened and tempered to a Vickers hardness of 420 HV to 545 HV Cold worked Hardened and tempered to a Vickers hardness of 460 HV to 560 HV Materiala Hardness t
32、esting according to ISO 6507-1. Hardness testing according to ISO 6507-1. Plain, i.e. pins to be supplied in natural finish, treated with a protective lubricant, unless otherwise specified by agreement between customer and supplier. If pins are surface coated, appropriate plating or coating processe
33、s should be employed to avoid hydrogen embrittlement. Due to the risk of hydrogen embrittlement, pins should not be electroplated or phosphate-coated. If electroplating or phosphate coating is required for corrosion prevention, by agreement between customer and supplier, it is mandatory that the pin
34、s be baked immediately after plating to minimize the risk of hydrogen embrittlement, see also hydrogen embrittlement relief according to ISO 4042. Nevertheless, freedom from hydrogen embrittlement is not absolutely guaranteed. Surface finish All tolerances shall apply prior to the application of a p
35、lating or coating. Plain, i.e. pins to supplied in natural finish. Workmanship Pins shall be free of irregularities or detrimental defects. No burrs shall appear on any part of the pin. EN ISO 8750:20074 Table 2 (continued) Shear strength test The test shall be in accordance with ISO 8749. Acceptabi
36、lity The acceptance procedure shall be in accordance with ISO 3269. aOther materials as agreed between customer and supplier. bUse of Cr is optional. 6 Designation EXAMPLE 1 A spring-type straight pin, coiled, standard duty, with nominal diameter d1= 6 mm and nominal length l = 30 mm, made of steel
37、(St) is designated as follows: Spring pin ISO 8750 - 6 30 - St EXAMPLE 2 A spring-type straight pin, coiled, standard duty, with nominal diameter d1= 6 mm and nominal length l = 30 mm, made of austenitic stainless steel (A) is designated as follows: Spring pin ISO 8750 - 6 30 - A EN ISO 8750:20075Bi
38、bliography 1 ISO 8748, Spring-type straight pins Coiled, heavy duty 2 ISO 8751, Spring-type straight pins Coiled, light duty EN ISO 8750:2007BS EN ISO 8750:2007BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British
39、 Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish 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 co
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