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1、BRITISH STANDARD BS EN 14399-6:2005 Incorporating Corrigendum No. 1 High-strength structural bolting assemblies for preloading Part 6: Plain chamfered washers The European Standard EN 14399-6:2005 has the status of a British Standard ICS 21.060.30 BS EN 14399-6:2005 This British Standard was publish
2、ed under the authority of the Standards Policy and Strategy Committe on 7 October 2005 BSI August 2006 ISBN 0 580 46548 9 National foreword This British Standard is the official English language version of EN 14399-6:2005, including Corrigendum January 2006. Together with BS EN 14399-1:2005, BS EN 1
3、4399-2:2005, BS EN 14399-3:2005, BS EN 14399-4:2005 and BS EN 14399-5:2005, it supersedes BS 4395-1:1969 and BS 4395-2:1969, which are planned to be declared obsolescent in September 20071), and then, together with BS 449 and BS 5950, will be withdrawn upon publication of Eurocode 3. (BS 4395-1:1969
4、 and BS 4395-2:1969 currently support BS 449 and BS 5950.) The UK participation in the preparation of EN 14399-6 was entrusted by Technical Committee FME/9, Nuts, bolts and accessories/Steering Committee, to its Subcommittee, FME/9/1, Materials, which has the responsibility to: aid enquirers to unde
5、rstand 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. A list of organizations represented on
6、 this subcommittee can be obtained on request to its secretary. Additional information This part of BS EN 14399 is one of several parts that comprise the BS EN 14399 series of standards. BS EN 14399-1 provides the general requirements to which the other parts, which provide specific requirements reg
7、arding manufacture, materials and testing, relate. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “
8、Search” facility of the BSI Electronic Catalogue or of British Standards Online. 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 does not of itself confer immunity from lega
9、l obligations. 1)CEN/TC 185/WG 6 has applied for a two-year extended co-existence period, to “September 2007”, and for a corrigendum to amend the second “September 2005” date in the Foreword to EN 14399-6:2005 to “September 2007”. Summary of pages This document comprises a front cover, an inside fro
10、nt cover, the EN title page, pages 2 to 8, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No.DateComments 16229 Corrigendum No. 1 August 2006 Changes applied to Clause 6
11、EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14399-6 March 2005 ICS 21.060.30 Including Corrigendum January 2006 English version High-strength structural bolting assemblies for preloading - Part 6: Plain chamfered washers Boulonnerie de construction mtallique haute rsistance apte la prcontra
12、inte - Partie 6 : Rondelles plates chanfreines Hochfeste planmig vorspannbare Schraubenverbindungen fr den Metallbau - Teil 6: Flache Scheiben mit Fase This European Standard was approved by CEN on 30 April 2004. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipula
13、te 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 Central Secretariat or to any CEN member. This European Standard exis
14、ts 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bod
15、ies 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 FO
16、R STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2005 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14399-6:2005: E EN 14399-6:2005 (E) 2 Conten
17、ts page Foreword3 Introduction.4 1Scope 5 2Normative references5 3Dimensions.6 4Specification and reference standards .7 5Designation 7 6Marking.7 Bibliography8 ? EN 14399-6:2005 (E) 3 Foreword This document (EN 14399-6:2005) has been prepared by Technical Committee CEN /TC 185 “Threaded and non-thr
18、eaded 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 2005, and conflicting national standards shall be wi
19、thdrawn at the latest by September 2005. This document includes a Bibliography. 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
20、, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. ? EN 14399-6:2005 (E) 4 Introduction This document on structural bolting reflects the
21、situation in Europe where two technical solutions exist to achieve the necessary ductility of bolt/nut/washer assemblies. These solutions utilize different systems (HR and HV) of bolt/nut/washer assemblies, see Table 1. Both systems are well proved and it is up to the experts responsible for structu
22、ral bolting whether they use the one or the other system. It is, however, important for the performance of the assembly to avoid mixing up the components of both systems. Therefore, bolts and nuts for both systems are standardized in one single part of this European Standard each and the marking of
23、the components of the same system is uniform. Table 1 Systems of bolt/nut/washer assemblies Bolt/nut/washer assembly System HR Bolt/nut/washer assembly System HV General requirements EN 14399-1 Bolt/nut assembly EN 14399-3 EN 14399-4 Marking HR HV Property classes 8.8/8 10.9/10 10.9/10 Washer(s)EN 1
24、4399-5 or EN 14399-6 EN 14399-5 or EN 14399-6 Marking H H Suitability test for preloading EN 14399-2 EN 14399-2 Preloaded bolted assemblies are very sensitive to differences in manufacture and lubrication. Therefore it is important that the assembly is supplied by one manufacturer who is always resp
25、onsible for the function of the assembly. For the same reason it is important that coating of the assembly is under the control of one manufacturer. Beside the mechanical properties of the components the functionality of the assembly requires that the specified preload can be achieved if the assembl
26、y is tightened with a suitable procedure. For this purpose a test method for the suitability of the components for preloading was created which will demonstrate whether the function of the assembly is fulfilled. It should be pointed out that compared to ISO 272 the widths across flats (large series)
27、 for M12 and M20 have been changed to 22 mm and 32 mm respectively. These changes are justified by the following reasons. Under the specific conditions of structural bolting the compressive stresses under the bolt head or nut for the sizes M12 may become too large with the width across flats of 21 m
28、m, especially if the washer is fitted excentrically to the bolt axis. For the size M20, the width across flats of 34 mm is very difficult to be produced. The change to 32 mm is primarily motivated by economics but it should also be pointed out that the width across flats of 32 mm is already common p
29、ractice in Europe. For the time being, the product standards EN 14399-3 to EN 14399-6 are the only European Standards which have regard to the general requirements of EN 14399-1. However, further product standards on fit bolts, countersunk head bolts, and load indicating washers for the use in high
30、strength structural bolting for preloading are under preparation. ? EN 14399-6:2005 (E) 5 1 Scope This document specifies, together with EN 14399-1, hardened and tempered plain washers with chamfer intended for assembly with large series hexagon high-strength structural bolts and nuts with thread si
31、zes from M12 to M36 inclusive. NOTE Attention is drawn to the importance of ensuring that the washers are correctly used if satisfactory results are to be obtained. For recommendations concerning proper application, reference to ENV 1090-1 is made. 2 Normative references The following referenced doc
32、uments 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. EN 14399-1, High-strength structural bolting assemblies for preloading Part 1
33、: General requirements. EN ISO 3269, Fasteners Acceptance inspection (ISO 3269:2000). EN ISO 4759-3, Tolerances for fasteners Part 3: Plain washers for bolts, screws and nuts Products grades A and C (ISO 4759-3:2000). EN ISO 10684, Fasteners Hot dip galvanized coatings (ISO 10684:2004). ? EN 14399-6
34、:2005 (E) 6 3 Dimensions See Figure 1 and Table 2. Figure 1 Dimensions Table 2 Dimensions Dimensions in millimetres Nominal size d (nominal thread diameter of associated bolts) 12(14)a16(18)a20 22 24 27 30 36 min. 13 15 17 19 21 23 25 28 31 37 d1 max. 13,27 15,27 17,2719,33 21,33 23,33 25,33 28,52 3
35、1,62 37,62 min. 23,48 27,48 29,4833,38 36,38 38,38 43,38 49 54,80 64,80 d2 max. 24 28 30 34 37 39 44 50 56 66 nom. 3 3 4 4 4 4 4 5 5 6 min. 2,7 2,7 3,7 3,7 3,7 3,7 3,7 4,4 4,4 5,4 h max. 3,3 3,3 4,3 4,3 4,3 4,3 4,3 5,6 5,6 6,6 nom. = min. 0,5 0,5 0,750,75 0,75 0,75 0,75 1 1 1,25 e max. 1,0 1,0 1,501
36、,50 1,50 1,50 1,50 2 2 2,50 min. 1,6 1,6 1,6 2 2,0 2,0 2,0 2,5 2,5 2,5 c max. 1,9 1,9 1,9 2,5 2,5 2,5 2,5 3,0 3,0 3,0 NOTE For hot dip galvanized washers the above dimensions apply prior to galvanizing. a Sizes in brackets are non-preferred sizes. ? EN 14399-6:2005 (E) 7 4 Specification and referenc
37、e standards Table 3 Specifications and reference standards Material Steel General requirements EN 14399-1 Mechanical properties Hardness range 300 HV to 370 HV Product grade A Tolerances International Standard EN ISO 4759-3 normal as processedb hot dip galvanized EN ISO 10684 Surface finisha others
38、to be agreedc Workmanship Parts shall be uniform and free of irregularities or detrimental defects. No protroding burrs shall appear on the washer. Acceptability For acceptance procedure, see EN ISO 3269. a Attention is drawn to the need to consider the risk of hydrogen embrittlement when selecting
39、an appropriate surface treatment process (e.g. cleaning and coating), see the relevant coating standards. b “As processed“ means the normal finish resulting from heat treatment with a light coating of oil. c Other coatings may be negotiated between the purchaser and the manufacturer provided they do
40、 not impair the mechanical properties or the functional characteristics. Coatings of cadmium or cadmium alloys are not permitted. 5 Designation EXAMPLE A hardened and tempered chamfered plain washer, nominal size d = 16 mm, for high-strength structural bolting for preloading is designated as follows
41、: Washer EN 14399-6 16 6 Marking Hardened and tempered chamfered washers shall be marked with the identification mark of the manufacturer of the assembly and the letter H. The marking shall be indented on the non-chamfered side. Key 1 Identification mark of the manufacturer of the assembly Figure 2
42、Marking ? EN 14399-6:2005 (E) 8 Bibliography 1 ENV 1090-1, Execution of steel structures Part 1: General rules and rules for buildings. 2 ISO 272, Fasteners Hexagon products - Widths across flats. ? blank ? BS EN 14399-6:2005 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution
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