1、BRITISH STANDARD BS EN 14399-6:2005 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 Licensed Copy: na na, University of Central Lancashire JISC, Wed Feb 08 08:15:43 GMT
2、 2006, Uncontrolled Copy, (c) BSIBS EN 14399-6:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 7 October 2005 BSI 7 October 2005 ISBN 0 580 46548 9 National foreword This British Standard is the official English language version of EN 14
3、399-6:2005. Together with BS EN 14399-1:2005, BS EN 14399-2:2005, 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 2007 1) , and then, together with BS 449 and BS 5950, will be wi
4、thdrawn upon publication of Eurocode 3. (BS 4395-1:1969 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,
5、 which has the responsibility to: A list of organizations represented on 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 requir
6、ements to which the other parts, which provide specific requirements regarding 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 en
7、titled “International Standards Correspondence Index”, or by using the “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. Complia
8、nce with a British Standard does not of itself confer immunity from legal 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 200
9、7”. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages
10、This document comprises a front cover, an inside front 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. Date Comments Licensed C
11、opy: na na, University of Central Lancashire JISC, Wed Feb 08 08:15:43 GMT 2006, Uncontrolled Copy, (c) BSIEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN143996 March2005 ICS21.060.30 Englishversion HighstrengthstructuralboltingassembliesforpreloadingPart 6:Plainchamferedwashers Boulonneriedeconst
12、ructionmtalliquehautersistance aptelaprcontraintePartie6:Rondellesplates chanfreines Hochfesteplanmigvorspannbare SchraubenverbindungenfrdenMetallbauTeil6:Flache ScheibenmitFase ThisEuropeanStandardwasapprovedbyCENon30April2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichsti
13、pulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,Fr
14、ench,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germa
15、ny,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B105
16、0Brussels 2005CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN143996:2005:E Licensed Copy: na na, University of Central Lancashire JISC, Wed Feb 08 08:15:43 GMT 2006, Uncontrolled Copy, (c) BSIEN 14399-6:2005 (E) 2 Contents page Foreword3 Introducti
17、on .4 1 Scope 5 2 Normative references 5 3 Dimensions.6 4 Specification and reference standards .7 5 Designation 7 6 Marking .7 Bibliography 8 Licensed Copy: na na, University of Central Lancashire JISC, Wed Feb 08 08:15:43 GMT 2006, Uncontrolled Copy, (c) BSIEN 14399-6:2005 (E) 3 Foreword This docu
18、ment (EN 14399-6:2005) has been prepared by Technical Committee CEN /TC 185 “Threaded and non-threaded 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 o
19、r by endorsement, at the latest by September 2005, and conflicting national standards shall be withdrawn 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 boun
20、d 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 Unite
21、d Kingdom. Licensed Copy: na na, University of Central Lancashire JISC, Wed Feb 08 08:15:43 GMT 2006, Uncontrolled Copy, (c) BSIEN 14399-6:2005 (E) 4 Introduction This document on structural bolting reflects the situation in Europe where two technical solutions exist to achieve the necessary ductili
22、ty 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 structural bolting whether they use the one or the other system. It is, however, important for
23、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 the components of the same system is uniform. Table 1 Systems of bolt/nut/washer assembl
24、ies 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 14399-5 or EN 14399-6 EN 14399-5 or EN 14399-6 Marking H H Suitability test for preloadi
25、ng 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 responsible for the function of the assembly. For the same reason it is important that coat
26、ing 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 assembly is tightened with a suitable procedure. For this purpose a test method for the suitab
27、ility 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) for M12 and M20 have been changed to 22 mm and 32 mm respectively. These changes are j
28、ustified 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 mm, especially if the washer is fitted excentrically to the bolt axis. For the size M20,
29、 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 practice in Europe. For the time being, the product standards EN 14399-3 to EN 14399-6 a
30、re 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 strength structural bolting for preloading are under preparation. Licensed Copy: na na,
31、 University of Central Lancashire JISC, Wed Feb 08 08:15:43 GMT 2006, Uncontrolled Copy, (c) BSIEN 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 b
32、olts and nuts with thread sizes 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
33、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. EN 14399-1, High-strength structural bolting asse
34、mblies for preloading Part 1: 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 (I
35、SO 10684:2004). Licensed Copy: na na, University of Central Lancashire JISC, Wed Feb 08 08:15:43 GMT 2006, Uncontrolled Copy, (c) BSIEN 14399-6:2005 (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 o
36、f associated bolts) 12 (14) a16 (18) a20 22 24 27 30 36 min. 13 15 17 19 21 23 25 28 31 37 d 1max. 13,27 15,27 17,27 19,33 21,33 23,33 25,33 28,52 31,62 37,62 min. 23,48 27,48 29,48 33,38 36,38 38,38 43,38 49 54,80 64,80 d 2max. 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
37、 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 0,75 0,75 0,75 0,75 0,75 1 1 1,25 e max. 1,0 1,0 1,50 1,50 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 was
38、hers the above dimensions apply prior to galvanizing. aSizes in brackets are non-preferred sizes. Licensed Copy: na na, University of Central Lancashire JISC, Wed Feb 08 08:15:43 GMT 2006, Uncontrolled Copy, (c) BSIEN 14399-6:2005 (E) 7 4 Specification and reference standards Table 3 Specifications
39、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 processed bhot dip galvanized EN ISO 10684 Surface finish aothers to be agreed cWorkmanship Parts sha
40、ll 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. aAttention is drawn to the need to consider the risk of hydrogen embrittlement when selecting an appropriate surface treatment pro
41、cess (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. cOther coatings may be negotiated between the purchaser and the manufacturer provided they do not impair the mechanical properties
42、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: Washer EN 14399-6 16 6 Marking Harde
43、ned and tempered chamfered washers shall be marked with the manufacturers trade (identification) mark 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 Marking Licensed Copy: na na, University of Central
44、Lancashire JISC, Wed Feb 08 08:15:43 GMT 2006, Uncontrolled Copy, (c) BSIEN 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. Licensed Copy: na na, University of Cent
45、ral Lancashire JISC, Wed Feb 08 08:15:43 GMT 2006, Uncontrolled Copy, (c) BSIblank Licensed Copy: na na, University of Central Lancashire JISC, Wed Feb 08 08:15:43 GMT 2006, Uncontrolled Copy, (c) BSIBS EN 14399-6:2005 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is
46、 the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sur
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