1、BRITISH STANDARD BS EN14399-8:2007IncorporatingCorrigendumOctober 2010High-strengthstructural boltingassemblies forpreloading Part 8: System HV Hexagon fit boltand nut assembliesICS 21.060.01g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40
2、g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 14399-8:2007This British Standard waspublished under the authorityof the Standards Policy andStrategy Committee on 31 January 2008 BSI 2010ISBN 978 0 580 69026 6National forewordThis British Standard is
3、the UK implementation of EN 14399-8:2007.Together with BS EN 14399-1:2005, BS EN 14399-2:2005, BS EN14399-3:2005, BS EN 14399-4:2005, BS EN 14399-5:2005, BS EN14399-6:2005, BS EN 14399-7:2005 and BS EN 14399-10:2009, it supersedesBS 4395-1:1969 and BS 4395-2:1969 which were declared obsolescent in20
4、07. (BS 4395-1:1969 and BS 4395-2:1969, together with BS 4604-1:1970and BS 4604-2:1970, currently support the BS 449 and BS 5950 series ofstandards.)The BS EN 14399 series of standards comprise ten parts. BS EN14399-1:2005 provides the general and harmonization requirements to whichthe other parts,
5、which provide specific requirements regarding manufacture,materials and testing, relate.It was agreed to extend the period of co-existence for BS EN 14399 Parts 1 to6 to two years, CEN/TC 185/WG 6 applied for and received approval for thesame extension period to be applied to all other structural bo
6、lting standards.The UK participation in its preparation was entrusted by Technical CommitteeFME/9, Nuts, bolts and accessories/steering committee, to SubcommitteeFME/9/1, Material.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does n
7、ot purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity fromlegal obligations.Amendments/corrigenda issued since publicationDate Comments31 October 2010 Correction to the national fo
8、rewordEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14399-8December 2007ICS 21.060.01English VersionHigh-strength structural bolting assemblies for preloading - Part8: System HV - Hexagon fit bolt and nut assembliesBoulonnerie de construction mtallique haute rsistanceapte la prcontrainte - Parti
9、e 8: Systme HV - Boulonsajusts tte hexagonale (vis + crou)Hochfeste planmig vorspannbareSchraubenverbindungen fr den Metallbau - Teil 8: SystemHV - Garnituren aus Sechskant-Passschrauben undMutternThis European Standard was approved by CEN on 10 November 2007.CEN members are bound to comply with the
10、 CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or
11、 to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versio
12、ns.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,
13、 Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members
14、.Ref. No. EN 14399-8:2007: EEN 14399-8:2007 (E) 2 Contents Foreword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Fit bolts .6 5 Nuts .12 6 Designation of the fit bolt/nut assembly .14 7 Associated washers 14 8 Functional characteristics of the fit bolt/nut/washer(
15、s) assembly .14 Bibliography 17 Figures Figure 1 Dimensions of fit bolts7 Figure 2 Clamp length t.7 Figure 3 Example for marking of a bolt 12 Figure 4 Dimensions of nuts 12 Figure 5 Example for marking of a nut.14 Tables Table 1 Systems of bolt/nut/washer(s) assemblies4 Table 2 Dimensions of fit bol
16、tsa.8 Table 3 Clamp length ta10 Table 4 Specifications for bolts and reference standards11 Table 5 Dimensions of nutsa12 Table 6 Specifications for nuts and reference standards.13 Table 7 Values for 115 Table 8 Values for 215 BS EN 14399-8:2007EN 14399-8:2007 (E) 3 Foreword This document (EN 14399-8
17、:2007) has been prepared by Technical Committee CEN/TC 185 “Fasteners”, the se-cretariat 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 June 2008, and conflicting nationa
18、l standards shall be withdrawn at the latest by June 2010. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following coun-tries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Den-mark, Estonia, Finland
19、, 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. BS EN 14399-8:2007EN 14399-8:2007 (E) 4 Introduction This document for structural
20、bolting reflects the 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 re
21、sponsible for structural 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 a
22、nd the marking of the components of the same system is uniform. Table 1 Systems of bolt/nut/washer(s) assemblies Bolt/nut/washer(s) assembly System HR Bolt/nut/washer(s) assembly System HV General requirements EN 14399-1 Bolt/nut assemblies EN 14399-3, EN 14399-7 EN 14399-4, EN 14399-8 Marking HR HV
23、 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 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 assem
24、bly is supplied by one manufacturer who is always responsible for the function of the assembly. For the same reason it is important that the coating of the assembly is under the control of the manufacturer. Beside the mechanical properties of the components, the functionality of the assembly require
25、s that the specified pre-load can be achieved if the assembly 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 tha
26、t 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 justified by the following reasons. Under the specific conditions of structural bolting the compressive stresses under the bolt head or nut for the sizes
27、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 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 o
28、ut that the width across flats of 32 mm is already common practice in Europe. Attention is drawn to the importance of ensuring that the bolts are correctly used if satisfactory results are to be obtained. For recommendations concerning proper application, reference to prEN 1090-2 is made. BS EN 1439
29、9-8:2007EN 14399-8:2007 (E) 5 1 Scope This document belongs to the suite of European Standards EN 14399 and is designed to be read in conjunction with EN 14399-1 for: general requirements; testing for conformity evaluation; evaluation of conformity; regulatory marking; for assemblies of high-strengt
30、h structural fit bolts and nuts of system HV suitable for preloaded joints with, thread sizes M12 to M36 and bolt property class 10.9 and EN 14399-2 for suitability testing. This part gives requirements for: dimensions; associated washer(s) according to EN 14399-6; performance and suitability tests
31、for assemblies with thread sizes M12 to M36 and bolt property class 10.9. Assemblies of hexagon fit bolts with shaft diameter (d + 1 mm) and nuts according to this part of this European Standard have been designed to allow preloading of at least 0,7 fub As1)according to EN 1993-1-8 (Eurocode 3) and
32、to obtain ductility predominantly by deformation of the engaged thread. For this purpose the components have the following characteristics: nut height approximately 0,8 d; hexagon fit bolt with short thread length. 2 Normative references The following referenced documents are indispensable for the a
33、pplication 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 1993-1-8, Eurocode 3: Design of steel structures Part 1-8: Design of joints EN 10045-1, Metallic materials -
34、 Charpy impact test - Part 1: Test method EN 14399-1:2005, High-strength structural bolting assemblies for preloading - Part 1: General requirements EN 14399-2:2005, High-strength structural bolting assemblies for preloading - Part 2: Suitability test for preloading EN 14399-5, High-strength structu
35、ral bolting assemblies for preloading - Part 5: Plain washers EN 14399-6, High-strength structural bolting assemblies for preloading - Part 6: Plain chamfered washers EN 20898-2, Mechanical properties of fasteners - Part 2: Nuts with specified proof load values - Coarse thread (ISO 898-2:1992) 1) fu
36、bis the nominal tensile strength (Rm) and Asis the nominal stress area of the bolt. BS EN 14399-8:2007EN 14399-8:2007 (E) 6 EN 26157-1, Fasteners - Surface discontinuities - Part 1: Bolts, screws and studs for general requirements (ISO 6157-1:1988) EN ISO 898-1, Mechanical properties of fasteners ma
37、de of carbon steel and alloy steel - Part 1: Bolts, screws and studs (ISO 898-1:1999) EN ISO 3269, Fasteners - Acceptance inspection (ISO 3269:2000) EN ISO 4759-1, Tolerances for fasteners - Part 1: Bolts, screws, studs and nuts - Product grades A, B and C (ISO 4759-1:2000) EN ISO 6157-2, Fasteners
38、- Surface discontinuities - Part 2: Nuts (ISO 6157-2:1995) EN ISO 10684, Fasteners - Hot dip galvanized coatings (ISO 10684:2004) ISO 148-1, Metallic materials - Charpy pendulum impact test - Part 1: Test method ISO 261, ISO general purpose metric screw threads General plan ISO 965-2, ISO general pu
39、rpose metric screw threads - Tolerances - Part 2: Limits of sizes for general purpose external and internal screw threads - Medium quality ISO 965-5, ISO general purpose metric screw threads - Tolerances - Part 5: Limits of sizes for internal screw threads to mate with hot-dip galvanized external sc
40、rew threads with maximum size of tolerance position h before galvanizing 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 14399-1:2005 and EN 14399-2:2005 ap-ply. 4 Fit bolts 4.1 General The test method for suitability for preloading shall be as specif
41、ied in EN 14399-2. 4.2 Dimensions of fit bolts Dimensions see Figure 1 and Table 2, clamp length see Figure 2 and Table 3. BS EN 14399-8:2007EN 14399-8:2007 (E) 7 aincomplete thread u 2P b15 to 30 Figure 1 Dimensions of fit bolts Figure 2 Clamp length t BS EN 14399-8:2007EN 14399-8:2007 (E) 8 Table
42、2 Dimensions of fit boltsa Dimensions in millimetresThread d M12 M16 M20 M22 M24 M27M30 M36 Pb 1,75 2 2,5 2,5 3 3 3,5 4 b (ref.)23 28 33 34 39 41 44 52 min. 0,4 0,4 0,4 0,4 0,4 0,4 0,4 0,4 c max. 0,6 0,6 0,8 0,8 0,8 0,8 0,8 0,8 damax. 15,2 19,2 24 26 28 32 35 41 nom. 13 17 21 23 25 28 31 37 min.c12,
43、74 16,74 20,71 22,71 24,71 27,71 30,67 36,67 dsmax.c12,85 16,85 20,84 22,84 24,84 27,84 30,83 36,83 min. 20,1 24,929,533,338,042,846,655,9dwmax. d dd d d d d d e min. 23,91 29,56 35,03 39,55 45,20 50,85 55,37 66,44 nom. 8 10 13 14 15 17 19 23 min. 7,55 9,25 12,1 13,1 14,1 16,1 17,95 21,95 k max. 8,4
44、5 10,75 13,9 14,9 15,9 17,9 20,05 24,05 kwmin. 5,28 6,47 8,47 9,17 9,87 11,27 12,56 15,36 r min. 1,2 1,2 1,5 1,5 1,5 2 2 2 max. 22 27 32 36 41 46 50 60 s min. 21,16 26,16 31 35 40 45 49 58,8 ymax. 6,5 7,5 8,5 8,5 10,0 10,0 11,5 13,0 BS EN 14399-8:2007EN 14399-8:2007 (E) 9 Table 2 (continued) Dimensi
45、ons in millimetresThread d M12 M16 M20 M22 M24 M27M30 M36 l lsfand lge lslglslglslglslglslglslglslglslgnom. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. min. max. 50 48,75 51,25 20,5 27 55 53,5 56,5 25,5 32 60 58,5 61,5 30,5 37 65 63,5 66,5 35,5 42 29,5 37 70 68,5
46、71,5 40,5 47 34,5 42 75 73,5 76,5 45,5 52 39,5 47 33,5 42 80 78,5 81,5 50,5 57 44,5 52 38,5 47 37,5 46 85 83,25 86,75 55,5 62 49,5 57 43,5 52 42,5 51 90 88,25 91,75 60,5 67 54,5 62 48,5 57 47,5 56 41 51 95 93,25 96,75 65,5 72 59,5 67 53,5 62 52,5 61 46 56 44 54 100 98,25 101,75 64,5 72 58,5 67 57,5
47、66 51 61 49 59 105 103,25 106,75 69,5 77 63,5 72 62,5 71 56 66 54 64 49,5 61 110 108,25 111,75 74,5 82 68,5 77 67,5 76 61 71 59 69 54,5 66 115 113,25 116,75 79,5 87 73,5 82 72,5 81 66 76 64 74 59,5 71 120 118,25 121,75 84,5 92 78,5 87 77,5 86 71 81 69 79 64,5 76 125 123 127 89,5 97 83,5 92 82,5 91 7
48、6 86 74 84 69,5 81 60 73 130 128 132 88,5 97 87,5 96 81 91 79 89 74,5 86 65 78 135 133 137 93,5 102 92,5 101 86 96 84 94 79,5 91 70 83 140 138 142 98,5 107 97,5 106 91 101 89 99 84,5 96 75 88 145 143 147 103,5 112 102,5 111 96 106 94 104 89,5 101 80 93 150 148 152 108,5 117 107,5 116 101 111 99 109
49、94,5 106 85 98 155 153 159 113,5 122 112,5 121 106 116 104 114 99,5 111 90 103 160 158 164 117,5 126 111 121 109 119 104,5 116 95 108 165 163 169 122,5 131 116 126 114 124 109,5 121 100 113 170 168 174 121 131 119 129 114,5 126 105 118 175 173 179 126 136 124 134 119,5 131 110 123 180 178 184 131 141 129 139 124,5 136 115 128 185 182,7 189,6 136 146 134 144 129,5 141 120 133 190 187,7 194,6 139 1
