SVENSK STANDARD SS- Fastställd 2004-03-19 Utgåva 2 Fästelement Sexkanthålsskruvar (ISO 4762:2004) Hexagon socket head cap screws (ISO 4762:2004) ICS 21.060.10 Språk: engelska Publicerad: maj 2004 Copyright SIS. Reproduction in any form without permission is prohibited.
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EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN ISO 4762 March 2004 ICS 21.060.10 Supersedes EN ISO 4762:1997 English version Hexagon socket head cap screws (ISO 4762:2004) Vis à tête cylindrique à six pans creux (ISO 4762:2004) Zylinderschrauben mit Innensechskant (ISO 4762:2004) This European Standard was approved by CEN on 16 January 2004. 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 concerning such national standards may be obtained on application to the 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 translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. E
Page 2 Provläsningsexemplar / Preview Contents Page Foreword... 3 1 Scope... 4 2 Normative references... 4 3 Dimensions... 5 4 Requirements and reference International Standards... 12 5 Designation... 12 Annex A (informative) Masses... 13
Page 3 Foreword This document () has been prepared by Technical Committee ISO/TC 2 "Fasteners" in collaboration with Technical Committee CEN/TC 185 "Threaded and nonthreaded mechanical fasteners and accessories", the secretariat of 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 September 2004, and conflicting national standards shall be withdrawn at the latest by September 2004. This document supersedes EN ISO 4762:1997. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 4762:2004 has been approved by CEN as without any modifications.
Page 4 Provläsningsexemplar / Preview Hexagon socket head cap screws 1 Scope This International Standard specifies the characteristics of hexagon socket head cap screws with coarse pitch thread from M1,6 up to and including M64 and product grade A. For approximate masses of screws see Annex A. If, in special cases, specifications other than those listed in this International Standard are required, they should be selected from existing International Standards, e.g ISO 261, ISO 888, ISO 898-1, ISO 965-2. ISO 3506-1, ISO 8839 and ISO 4759-1. 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 amendments) applies. ISO 225, Fasteners Bolts, screws, studs and nuts Symbols and designations of dimensions ISO 261, ISO general-purpose metric screw threads General plan ISO 888, Bolts, screws and studs Nominal lengths, and thread lengths for general purpose bolts ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs ISO 965-2, ISO general purpose metric screw threads Tolerances Part 2: Limits of sizes for general purpose external and internal screw threads Medium quality ISO 965-3, ISO general purpose metric screw threads Tolerances Part 3: Deviations for constructional screw threads ISO 3269, Fasteners Acceptance inspection ISO 3506-1, Mechanical properties of corrosion-resistant stainless-steel fasteners Part 1: Bolts, screws and studs ISO 4042, Fasteners Electroplated coatings ISO 4753, Fasteners Ends of parts with external ISO metric thread ISO 4759-1, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C ISO 6157-1, Fasteners Surface discontinuities Part 1: Bolts, screws and studs for general requirements ISO 6157-3, Fasteners Surface discontinuities Part 3: Bolts, screws and studs for special requirements ISO 8839, Mechanical properties of fasteners Bolts, screws, studs and nuts made of non-ferrous metals ISO 8992, Fasteners General requirements for bolts, screws, studs and nuts
Page 5 ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings ISO 23429, Gauging of hexagon sockets 3 Dimensions See Figure 1 and Table 1. Symbols and designations of dimensions are defined in ISO 225. Maximum underhead fillet l f, max = 1,7 r max r max = d a, max d s, max 2, see Table 1 r min Figure 1
Page 6 Provläsningsexemplar / Preview Permissible alternative form of socket Top and bottom edge opf the head For broached sockets which are at the maximum limit of size the overcut resulting from drilling shall not exceed 1/3 of the length of any flat of the socket which is e/2. a A slight rounding or countersink at the mouth of the socket is permissible. b Point chamfered or for sizes M4 and below as rolled according to ISO 4753. c Incomplete thread u 2 P. d s l s, min d applies if values of are specified. e Top edge of head may be rounded or chamfered as shown at the option of the manufacturer. f Bottom edge of head may be rounded or chamfered to d w but in every case shall be free from burrs. Figure 1 (continued)