1、BSI Standards PublicationBS EN 14399-6:2015High-strength structuralbolting assemblies forpreloadingPart 6: Plain chamfered washersBS EN 14399-6:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 14399-6:2015.It supersedes BS EN 14399-6:2005 which is withdrawn.
2、The UK participation in its preparation was entrusted to TechnicalCommittee FME/9/-/2, Fasteners for structural bolting.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contr
3、act. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 81782 3ICS 21.060.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the author
4、ity of theStandards Policy and Strategy Committee on 28 February 2015.Amendments issued since publicationDate Text affectedBS EN 14399-6:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14399-6 February 2015 ICS 21.060.30 Supersedes EN 14399-6:2005English Version High-strength structural bol
5、ting assemblies for preloading - Part 6: Plain chamfered washers Boulonnerie de construction mtallique haute rsistance apte la prcontrainte - Partie 6 : Rondelles plates chanfreines Hochfeste vorspannbare Garnituren fr Schraubverbindungen im Metallbau - Teil 6: Flache Scheiben mit Fase This European
6、 Standard was approved by CEN on 18 October 2014. 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 conce
7、rning such national standards may be obtained on application to the CEN-CENELEC 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 int
8、o its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, G
9、ermany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE
10、 FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14399-6:2015 EBS EN 14399-6:2015EN 14399-6:2015 (E) 2 Contents Page Foreword 3 Introduction .4 1 Scop
11、e 6 2 Normative references 6 3 Dimensions .6 4 Specification and reference standards .7 5 Designation 8 6 Marking .8 Bibliography 9 BS EN 14399-6:2015EN 14399-6:2015 (E) 3Foreword This document (EN 14399-6:2015) has been prepared by Technical Committee CEN/TC 185 “Fasteners”, the secretariat of whic
12、h 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 August 2015 and conflicting national standards shall be withdrawn at the latest by November 2016. Attention is drawn to the possib
13、ility 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 14399-6:2005. In comparison with EN 14399-6:2005, the following modifications have been ma
14、de: Table 1 containing the overview of the composition of bolting assemblies and component marking has been added; specifications for the marking of washers have been revised. EN 14399 consists of the following parts, under the general title High-strength structural bolting assemblies for preloading
15、: Part 1: General requirements; Part 2: Suitability for preloading; Part 3: System HR Hexagon bolt and nut assemblies; Part 4: System HV Hexagon bolt and nut assemblies; Part 5: Plain washers; Part 6: Plain chamfered washers; Part 7: System HR Countersunk head bolt and nut assemblies; Part 8: System
16、 HV Hexagon fit bolt and nut assemblies; Part 9: System HR or HV Direct tension indicators for bolt and nut assemblies; Part 10: System HRC Bolt and nut assemblies with calibrated preload. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countr
17、ies are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pola
18、nd, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 14399-6:2015EN 14399-6:2015 (E) 4 Introduction This document on structural bolting reflects the situation in Europe where two technical solutions exist to achieve the necessary ductility of bo
19、lt/nut/washer(s) assemblies. These solutions consist of two different systems (HR and HV) of bolt/nut/washer assemblies, see Table 1. Both systems are well proven and it is the responsibility of the experts using structural bolting whether they use the one or the other system. It is, however, import
20、ant 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 the components of the same system is uniform. Preloaded bolted assemblies are ve
21、ry sensitive to differences in manufacture and lubrication. Therefore, it is important that the bolting assemblies are supplied by one manufacturer who is always responsible for the functionality of the bolting assemblies. For the same reason it is important that coating of the bolting assemblies is
22、 under the control of one manufacturer. Beside the mechanical properties of the components, the functionality of the bolting assemblies requires that the specified preload can be achieved if the bolting assemblies are tightened with a suitable procedure. For this purpose a test method for the suitab
23、ility of the bolting assemblies for preloading was created, which will demonstrate whether the functionality of the bolting assemblies 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 respectiv
24、ely. 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 mm, especially if the washer is fitted eccentrically to the bol
25、t 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 was common practice in Europe. BS EN 14399-6:2015EN 14399-6:2015 (E) 5Table 1 Com
26、position of high-strength structural bolting assemblies and component marking Type of bolting assembly System HR System HV System HRC General requirements EN 14399-1 Suitability for preloading EN 14399-2 and, if any, additional testing specified in the product standard Bolt and nut EN 14399-3 EN 143
27、99-7 EN 14399-4 EN 14399-8 EN 14399-10 MarkingBolt HR8.8 HR10.9 HR8.8 HR10.9 HV10.9 HVP10.9 HRC10.9 Nut HR8 or HR10 HR10 HR8 or HR10 HR10 HV10 HV10 HR10 HRD10 Washer(s) EN 14399-5aor EN 14399-6 EN 14399-6 EN 14399-5aor EN 14399-6 Marking H or HRbH or HVbH or HRbH or HRb or HDcDirect tension indicato
28、r and nut face washer or bolt face washer, if any EN 14399-9 Not applicable MarkingDirect tension indicator H8 H10 H8 H10 H10 Nut face washer HN HN Bolt face washer HB Not applicable HB aEN 14399-5 can only be used under the nut. bAt the choice of the manufacturer. cMandatory mark for washers with e
29、nlarged outer diameter according to EN 14399-5 only. BS EN 14399-6:2015EN 14399-6:2015 (E) 6 1 Scope This European Standard specifies, together with EN 14399-1 and EN 14399-2, hardened and tempered chamfered plain washers with chamfer intended for bolting assemblies with large series hexagon high-st
30、rength structural bolts and nuts with thread sizes from M12 to M36 inclusive. Washers according to this standard are not intended to be used in direct contact with oversized or slotted holes. NOTE Attention is drawn to the importance of ensuring that the washers are correctly used if satisfactory re
31、sults are to be obtained. For recommendations concerning proper application, reference to EN 1090-2 is made. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edit
32、ion 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: General requirements EN 14399-2, High-strength structural bolting assemblies for preloading -
33、Part 2: Suitability for preloading EN ISO 3269, Fasteners - Acceptance inspection (ISO 3269) EN ISO 4759-3, Tolerances for fasteners - Part 3: Plain washers for bolts, screws and nuts - Products grades A and C (ISO 4759-3) EN ISO 10684, Fasteners - Hot dip galvanized coatings (ISO 10684) 3 Dimension
34、s See Figure 1 and Table 2. Figure 1 Dimensions For coated washers the above dimensions apply prior to coating. BS EN 14399-6:2015EN 14399-6:2015 (E) 7 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 d1min. 1
35、3 15 17 19 21 23 25 28 31 37 max. 13,27 15,27 17,27 19,33 21,33 23,33 25,33 28,52 31,62 37,62 d2min. 23,48 27,48 29,48 33,38 36,38 38,38 43,38 49,00 54,80 64,80 max. 24 28 30 34 37 39 44 50 56 66 h 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 max. 3,3 3,3 4,3 4,3 4,3 4,3 4,3
36、 5,6 5,6 6,6 e nom. = min. 0,5 0,5 0,75 0,75 0,75 0,75 0,75 1 1 1,25 max. 1,0 1,0 1,5 1,5 1,5 1,5 1,5 2,0 2,0 2,5 c min. 1,6 1,6 1,6 2,0 2,0 2,0 2,0 2,5 2,5 2,5 max. 1,9 1,9 1,9 2,5 2,5 2,5 2,5 3,0 3,0 3,0 aSizes in brackets are non-preferred sizes. 4 Specification and reference standards Table 3 Sp
37、ecifications and reference standards Material Steel General requirements EN 14399-1 and EN 14399-2 Mechanical properties Hardness range 300 HV to 370 HV Tolerances Product grade A European Standard EN ISO 4759-3 Finish CoatingaUncoated as processedbHot dip galvanized EN ISO 10684 Others to be agreed
38、cWorkmanship Parts shall be uniform and free of irregularities or detrimental defects. No protruding 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
39、 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. cOther coatings may be negotiated between the purchaser and the manufacturer provided they do not impair the
40、mechanical properties or the functional characteristics. Coatings of cadmium or cadmium alloys are not permitted. BS EN 14399-6:2015EN 14399-6:2015 (E) 8 5 Designation EXAMPLE 1 A hardened and tempered chamfered plain washer for high-strength structural bolting for preloading, of nominal size d = 16
41、 mm, uncoated, is designated as follows: Washer EN 14399-6 16 EXAMPLE 2 A hardened and tempered chamfered plain washer for high-strength structural bolting for preloading, of nominal size d = 16 mm, with hot dip galvanized coating (tZn), is designated as follows: Washer EN 14399-6 16 tZn 6 Marking H
42、ardened and tempered chamfered washers shall be marked with at least the manufacturers trade (identification) mark and the letter H. The manufacturer may decide to mark washers with HR or HV (instead of H marking) when they are supplied as component of bolting assemblies of system HR or HV respectiv
43、ely. The marking shall be indented on the non-chamfered side. Key 1 identification mark of the manufacturer of the assembly Figure 2 Example of marking BS EN 14399-6:2015EN 14399-6:2015 (E) 9 Bibliography 1 EN 1090-2, Execution of steel structures and aluminium structures - Part 2: Technical require
44、ments for steel structures 2 EN 14399-3, High-strength structural bolting assemblies for preloading - Part 3: System HR - Hexagon bolt and nut assemblies 3 EN 14399-4, High-strength structural bolting assemblies for preloading - Part 4: System HV - Hexagon bolt and nut assemblies 4 EN 14399-5, High-
45、strength structural bolting assemblies for preloading - Part 5: Plain washers 5 EN 14399-7, High-strength structural bolting assemblies for preloading - Part 7: System HR - Countersunk head bolt and nut assemblies 6 EN 14399-8, High-strength structural bolting assemblies for preloading - Part 8: Sys
46、tem HV - Hexagon fit bolt and nut assemblies 7 EN 14399-9, High-strength structural bolting assemblies for preloading - Part 9: System HR or HV - Direct tension indicators for bolt and nut assemblies 8 EN 14399-10, High-strength structural bolting assemblies for preloading - Part 10: System HRC - Bo
47、lt and nut assemblies with calibrated preload 9 ISO 272, Fasteners - Hexagon products - Widths across flats This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and
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