1、BRITISH STANDARD BS EN ISO 8735:1998 Parallel pins with internal thread, of hardened steel or martensitic stainless steel The European Standard EN ISO 8735:1997 has the status of a British Standard ICS 21.060.50BSEN ISO 8735:1998 This British Standard, having been prepared under the directionof the
2、Engineering SectorBoard, was published underthe authority of the Standards Board and comes into effect on 15 May 1998 BSI 04-1999 ISBN 0 580 29402 1 National foreword This British Standard is the English language version of EN ISO 8735:1997. It is identical with ISO8735:1997. It supersedes BSEN28735
3、:1992 which is withdrawn.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 responsibility to: aid enquirers to understand the text; present to the respons
4、ible 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. A list of organizations represented on this subcommittee can be obtained on r
5、equest 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 European publications. The British Standards which implement international or Euro
6、pean 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 Electronic Catalogue. A British Standard does not purport to include all the nece
7、ssary 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 front cover, an inside front cover, pages i and ii, theEN
8、ISO title page, page 2, the ISOtitle page, page ii, pages1 to4, aninsideback cover 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 publicati
9、on Amd. No. Date CommentsBSEN ISO 8735:1998 BSI 04-1999 i Contents Page National foreword Inside front cover Foreword 2 Foreword ii Text of ISO 8735 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8735 November1997 ICS21.060 Supersedes EN28735:1992 Descriptors: See ISO document Eng
10、lish version Parallel pins with internal thread, of hardened steel or martensitic stainless steel (ISO 8735:1997) Goupilles cylindriques trou taraud en acier tremp et en acier inoxydable martensitique (ISO 8735:1997) Zylinderstifte mit Innengewinde aus gehrtetem Stahl und martensitischem nichtrosten
11、dem Stahl (ISO 8735:1997) This European Standard 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 lis
12、ts 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 translation under the respo
13、nsibility 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, Greece, Iceland, Ireland, Italy, Luxembourg, Net
14、herlands, 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 form and by any mean
15、s reserved worldwide for CEN national Members. Ref. No. EN ISO 8735:1997 EENISO 8735:1997 BSI 04-1999 2 Foreword The text of the International Standard ISO8735:1997 has been prepared by Technical Committee ISO/TC2 “Fasteners” in collaboration with Technical Committee CEN/TC185 “Threaded and non-thre
16、aded mechanical fasteners and accessories”, the secretariat of which is held by DIN. This European Standard supersedes EN28735:1992. 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 by May1998, and co
17、nflicting 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, CzechRepublic, Denmark, Finland, France, Germa
18、ny, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO8735:1997 has been approved by CEN as a European Standard without any modifications. NOTENormative reference
19、s to International Standards are listed in Annex ZA (normative). Contents Page Foreword 2 1 Scope 1 2 Normative references 1 3 Dimensions 1 4 Requirements and reference International Standards 3 5 Designation 4 Annex ZA (normative) Normative references tointernational publications with their relevan
20、tEuropean publications Inside back cover Figure 1 1 Table 1 Dimensions 2 Table 2 Requirements and reference International Standards 3EN ISO8735:1997 ii BSI 04-1999 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bod
21、ies). 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. International organizations, governmental and
22、 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 standardization. Draft International Standards adopted by the technical committees are circulated to the member bodi
23、es for voting. Publication as an International Standard requires approval by at least75% of the member bodies casting a vote. International Standard ISO8735 was prepared by Technical Committee ISO/TC2, Fasteners. This second edition cancels and replaces the first edition (ISO8735:1987), which has be
24、en technically revised. Descriptors: Fasteners, steel products, pins (mechanics), straight pins, threaded parts, specifications, characteristics, dimensions, designation.ENISO8735:1997 BSI 04-1999 1 1 Scope This International Standard specifies the characteristics of parallel pins with internal thre
25、ad of steel, through hardened or case hardened and martensitic stainless steel, with nominal diameters d 1from6mm to50mm inclusive. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the ti
26、me 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 most recent editions of the standards indicated below. Members of IEC and ISO main
27、tain registers of currently valid International Standards. ISO 965-2: 1) , ISO general purpose metric screw threads Tolerances Part 2: Limits of sizes for general purpose bolt and nut threads Medium quality. ISO 3269:1988, Fasteners Acceptance inspection. ISO 3506-1:1997, Corrosion-resistant stainle
28、ss steel fasteners Part 1: Bolts, screws and studs. ISO 4042: 2) , Fasteners Electroplated coatings. 3 Dimensions See Figure 1 andTable 1. 1) To be published. (Revision of ISO 965-2:1980) 2) To be published. (Revision of ISO 4042:1989) Figure 1 ENISO 8735:1997 2 BSI 04-1999 Table 1 Dimensions Dimens
29、ions in millimetres d 1 m6 a 6 8 10 12 16 20 25 30 40 50 a 0,8 1 1,2 1,6 2 2,5 3 4 5 6,3 c 2,1 2,6 3 3,8 4,6 6 6 7 8 10 d 2 M4 M5 M6 M6 M8 M10 M16 M20 M20 M24 P b 0,7 0,8 1 1 1,25 1,5 2 2,5 2,5 3 d 3 4,3 5,3 6,4 6,4 8,4 10,5 17 21 21 25 t 1 6 8 10 12 16 18 24 30 30 36 t 2 min. 10 12 16 20 25 28 35 4
30、0 40 50 t 3 1 1,2 1,2 1,2 1,5 1,5 2 2 2,5 2,5 l c nom. min. max. 16 15,5 16,5 18 17,5 18,5 20 19,5 20,5 22 21,5 22,5 24 23,5 24,5 26 25,5 26,5 28 27,5 28,5 30 29,5 30,5 Range 32 31,5 32,5 35 34,5 35,5 40 39,5 40,5 of 45 44,5 45,5 50 49,5 50,5 55 54,25 55,75 60 59,25 60,75 65 64,25 65,75 70 69,25 70,
31、75 commercial 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 lengths 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 Other tolerances as agreed between customer and supplier. b P is the pitch of the thread. c Fo
32、r nominal lengths above200mm, steps of20mm.ENISO8735:1997 BSI 04-1999 3 4 Requirements and reference International Standards See Table 2. Table 2 Requirements and reference International Standards Screw thread Metric screw thread with tolerance 6H in accordance with ISO 965-2. Steel Martensitic stai
33、nlesssteel St C1 in accordance with ISO 3506-1 Type A Type B pin through hardened pin case hardened Chemical composition limits (check analysis) % either or Material a C 0,95 to 1,1 C 0,06 to 0,13 C 0,15 max. Hardened and tempered to a hardness of 460HV30 to560HV30 Si 0,15 to 0,35 Si 0,1 to 0,4 Si 0
34、,10 max. Mn 0,25 to 0,4 Mn 0,25 to 0,6 Mn 0,9 to 1,3 P 0,03 max. P 0,025 max. P 0,07 max. S 0,025 max. S 0,05 max. S 0,15 to 0,35 Cr 1,35 to 1,65 Pb 0,15 to 0,35 at the suppliers discretion Hardness: Surface hardness: 550 HV30 to 650 HV30 600 HV1 to 700 HV1 Hardness at case depth 0,25 to 0,4 mm: 550
35、 HV1 min. 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 If pins are surface coated appropriate plating or coating processes should be employed to avoid hydrogen embrittlement. Whe
36、n pins are electroplated or phosphate-coated, they shall be suitably treated immediately after plating or coating to obviate detrimental hydrogen embrittlement, although freedom from hydrogen embrittlement ist not absolutely guaranteed (see ISO 4042). Plain, i.e. pins to be supplied in natural finis
37、h. All tolerances shall apply prior to the application of a plating or coating. Surface roughness R a# 0,8 4m Workmanship Pins shall be free of irregularities or detrimental defects. No burrs shall appear on any part of the pin. Acceptability The acceptance procedure is covered in ISO 3269. a Other
38、materials as agreed between customer and supplier.ENISO 8735:1997 4 BSI 04-1999 5 Designation EXAMPLE 1 A through hardened steel parallel pin type A, with internal thread, with nominal diameter d 1=6mm and nominal length l =30mm is designated as follows: Parallel pin ISO 8735 6 30 A St EXAMPLE 2 A m
39、artensitic stainless steel pin of grade C1, with internal thread, with nominal diameter d 1=6mm and nominal lengthl =30mm is designated as follows: Parallel pin ISO 8735 6 30 C1ENISO8735:1997 BSI 04-1999 Annex ZA (normative) Normative references to international publications with their relevant Euro
40、pean 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, subsequent amendments to or revisions of an
41、y 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. Publication Year Title EN Year ISO 3506-1 1997 Mechanical properties of corrosion-resistant stainlesssteel
42、fasteners Part 1: Bolts, screws andstuds EN ISO 3506-1 1997BS EN ISO 8735:1998 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the internatio
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