Fästelement Skruvar med oförlorbar rundbricka, av stål Skruvar med brickor i hårdhetsklasserna 200 HV och 300 HV (ISO 10644:2009)

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SVENSK STANDARD SS-EN ISO 10644:2009 Fastställd/Approved: 2009-07-03 Publicerad/Published: 2009-08-26 Utgåva/Edition: 2 Språk/Language: engelska/english ICS: 21.060.10; 21.060.30; 21.060.99 Fästelement Skruvar med oförlorbar rundbricka, av stål Skruvar med brickor i hårdhetsklasserna 200 HV och 300 HV (ISO 10644:2009) Screw and washer assemblies made of steel with plain washers Washer hardness classes 200 HV and 300 HV (ISO 10644:2009) SWEDISH STANDARDS INSTITUTE

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Europastandarden EN ISO 10644:2009 gäller som svensk standard. Detta dokument innehåller den officiella engelska versionen av EN ISO 10644:2009. Denna standard ersätter SS-EN ISO 10644, utgåva 1. The European Standard EN ISO 10644:2009 has the status of a Swedish Standard. This document contains the official English version of EN ISO 10644:2009. This standard supersedes the Swedish Standard SS-EN ISO 10644, edition 1. Copyright/Upphovsrätten till denna produkt tillhör SIS, Swedish Standards Institute, Stockholm, Sverige. Användningen av denna produkt regleras av slutanvändarlicensen som åter nns i denna produkt, se standardens sista sidor. Copyright SIS, Swedish Standards Institute, Stockholm, Sweden. All rights reserved. The use of this product is governed by!the end-user licence for this product. You will nd the licence in the end of this document. Upplysningar om sakinnehållet i standarden lämnas av SIS, Swedish Standards Institute, telefon 08-555 520 00. Standarder kan beställas hos SIS Förlag AB som även lämnar allmänna upplysningar om svensk och utländsk standard. Information about the content of the standard is available from the Swedish Standards Institute (SIS), tel +46 8 555 520 00. Standards may be ordered from SIS Förlag AB, who can also provide general information about Swedish and foreign standards. SIS Förlag AB, SE 118 80 Stockholm, Sweden. Tel: +46 8 555 523 10. Fax: +46 8 555 523 11. E-mail: sis.sales@sis.se Internet: www.sis.se

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN ISO 10644 July 2009 ICS 21.060.30 Supersedes EN ISO 10644:1998 English Version Screw and washer assemblies made of steel with plain washers - Washer hardness classes 200 HV and 300 HV (ISO 10644:2009) Vis en acier à rondelle plate incorporée - Rondelles de classes de dureté 200 HV et 300 HV (ISO 10644:2009) Kombi-Schrauben aus Stahl mit flachen Scheiben - Härteklassen der Scheiben 200 HV und 300 HV (ISO 10644:2009) This European Standard was approved by CEN on 20 June 2009. 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 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 translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official 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, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10644:2009: E

SS-EN ISO 10644:2009 (E) EN ISO 10644:2009 (E) Foreword This document (EN ISO 10644:2009) has been prepared by Technical Committee ISO/TC 2 "Fasteners" in collaboration with Technical Committee CEN/TC 185 Fasteners 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 January 2010, and conflicting national standards shall be withdrawn at the latest by January 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 10644:1998. 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, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 10644:2009 has been approved by CEN as a EN ISO 10644:2009 without any modification. iii 3

SS-EN ISO 10644:2009 (E) Screw and washer assemblies made of steel with plain washers Washer hardness classes 200 HV and 300 HV 1 Scope This International Standard specifies the requirements for metric screw and plain washer assemblies made of steel with coarse thread M2 to M12 inclusive, flat seating heads, property classes up to and including 10.9 and washer hardness classes 200 HV or 300 HV. The plain washers are captive, i.e. prevented from disassembly and free to rotate. NOTE The manufacturing of screw and washer assemblies takes into consideration material and production procedure of screw blank and washer as well as the assembly process of components, in order to meet specification requirements (see Annex A). 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 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs with specified property classes Coarse thread and fine pitch thread ISO 1207, Slotted cheese head screws Product grade A ISO 1580, Slotted pan head screws Product grade A ISO 4014, Hexagon head bolts Product grades A and B ISO 4015, Hexagon head bolts Product grade B Reduced shank (shank diameter approximately equal to pitch diameter) ISO 4017, Hexagon head screws Product grades A and B ISO 4042, Fasteners Electroplated coatings ISO 4762, Hexagon socket head cap screws ISO 7045, Pan head screws with type H or type Z cross recess Product grade A ISO 9717, Phosphate conversion coatings for metals Method of specifying requirements ISO 10673, Plain washers for screw and washer assemblies Small, normal and large series Product grade A ISO 10683, Fasteners Non-electrolytically applied zinc flake coatings ISO 14579, Hexalobular socket head cap screws ISO 2009 All rights reserved 1

SS-EN ISO 10644:2009 (E) ISO 10644:2009(E) ISO 14583, Hexalobular socket pan head screws ISO 15071, Hexagon bolts with flange Small series Product grade A ISO 15072, Hexagon bolts with flange with metric fine pitch thread Small series Product grade A 3 Dimensions The dimensions of plain washers shall be in accordance with ISO 10673. The dimensions of the assembled screws shall conform to those of loose parts, i.e. ISO 1207, ISO 1580, ISO 4014, ISO 4015, ISO 4017, ISO 4762, ISO 7045, ISO 14579, ISO 14583, ISO 15071, ISO 15072, with the following exceptions: Bolts and screws shall have a reduced shank of such diameter, d s, that the washer with dimensions in accordance with ISO 10673 is free to rotate. NOTE d s pitch diameter. The maximum distance from the underside of the head to the commencement of full thread is increased by an amount necessary to accommodate the washer thickness for those products which are approximately threaded to the washer. For examples of screw and washer assemblies, see Figures 1 and 2. Figure 1 Screw threaded up to the washer Figure 2 Screw with shank The transition diameter, d a, as specified in the reference International Standards (see Table 3) shall be reduced by an amount equivalent to the difference between the nominal diameter, d, and pitch diameter to create the transition diameter, d a1 (see Figure 3 and Table 1). The curvature under head, as specified in the ISO International Standards for loose parts, shall not be changed. 2 ISO 2009 All rights reserved