1、BRITISH STANDARD BS EN14399-7:2007IncorporatingCorrigendumOctober 2010High-strengthstructural boltingassemblies forpreloading Part 7: System HR Countersunkhead bolt and nut assembliesICS 21.060.01g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g
2、38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 14399-7:2007This British Standard waspublished under the authorityof the Standards Policy andStrategy Committee on 31 January 2008 BSI 2010ISBN 978 0 580 69003 7National forewordThis British Standar
3、d is the UK implementation of EN 14399-7:2007.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 14399-8:2005 and BS EN 14399-10:2009, it supersedesBS 4395-1:1969 and BS 4395-2:1969 which were declared obsolescent
4、 in2007. (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 pa
5、rts, 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 structur
6、al bolting standards.Bolt and nut assemblies with countersunk heads conforming to BS EN14399-7:2007 have been designed to withstand the same axial tensile load asbolt and nut assemblies with hexagon heads conforming to BS EN14399-3:2005 and BS EN 14399-4:2005.The UK participation in its preparation
7、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 not purport to include all the necessary provisions of ac
8、ontract. 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 national forewordEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14399
9、-7December 2007ICS 21.060.01English VersionHigh-strength structural bolting assemblies for preloading - Part7: System HR - Countersunk head bolt and nut assembliesBoulonnerie de construction mtallique haute rsistanceapte la prcontrainte - Partie 7: Systme HR - Boulons tte fraise (vis et crou)Hochfes
10、te planmig vorspannbareSchraubenverbindungen fr den Metallbau - Teil 7: SystemHR - Garnituren aus Senkschrauben und MutternThis European Standard was approved by CEN on 10 November 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givin
11、g 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 to any CEN member.This European Standard exists in three official version
12、s (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 versions.CEN members are the national standards bodies of Austria, Belgium, Bulg
13、aria, 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 STANDARDIZA
14、TIONCOMIT 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.Ref. No. EN 14399-7:2007: EEN 14399-7:2007 (E) 2 Contents Foreword3 Intro
15、duction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .6 4 Bolts 6 5 Nuts .12 6 Designation of the countersunk head bolt/nut assembly .16 7 Associated washers 16 8 Functional characteristics of the bolt/nut/washer(s) assembly17 Bibliography 21 Figures Figure 1 Dimensions of bolts Tab
16、le 2 Dimensions of bolts a.7 Figure 2 Example for marking of a bolt 12 Figure 3 Dimensions of nuts 12 Figure 4 Example for marking of a nut.16 Figure 5 Adapter.17 Figure 6 Test set-up .18 Tables Table 1 Systems of bolt/nut/washer(s) assemblies4 Table 2 Dimensions of boltsa.8 Table 3 Specifications f
17、or bolts and reference standards11 Table 4 Dimensions of nuts a.13 Table 5 Specifications for nuts and reference standards.14 Table 6 Proof load values of nuts.15 Table 7 Hardness values of nuts, if specified 15 Table 8 Characteristics of adapters .17 Table 9 Values for 119 Table 10 Values for 219 B
18、S EN 14399-7:2007EN 14399-7:2007 (E) 3 Foreword This document (EN 14399-7:2007) 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 te
19、xt or by endorsement, at the latest by June 2008, and conflicting national 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: Austr
20、ia, Belgium, Bulgaria, Cyprus, Czech Republic, Den-mark, 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. BS EN 143
21、99-7:2007EN 14399-7:2007 (E) 4 Introduction This document for structural 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,
22、 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 the performance of the assembly to avoid mixing up the components of both systems. Therefore bolts and nuts for both sys
23、tems 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(s) assemblies Bolt/nut/washer(s) assembly System HR Bolt/nut/washer(s) assembly System HV General requirements EN 14399-1 Bolt/n
24、ut assemblies EN 14399-3, EN 14399-7 EN 14399-4, EN 14399-8 Marking HR HV Property classes 8.8/8 or 8.8/10 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 d
25、ifferences 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 the coating of the assembly is under the control of the manufacturer. Beside the
26、 mechanical properties of the components, the functionality of the assembly requires 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 demonstr
27、ate whether the function of the assembly is fulfilled. Attention is drawn to the importance of ensuring that the bolts are correctly used if satisfactory results are to be ob-tained. For recommendations concerning proper application, reference to prEN 1090-2 is made. BS EN 14399-7:2007EN 14399-7:200
28、7 (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-strength structural countersu
29、nk bolts and nuts of system HR suitable for preloaded joints with thread sizes M12 to M36 and bolt property classes 8.8 and 10.9 and EN 14399-2 for suitability testing. This document gives requirements for: dimensions; associated washer(s) according to EN 14399-5 or to EN 14399-6; performance and su
30、itability tests; for assemblies with thread sizes M12 to M36 and bolt property classes 8.8 and 10.9. Countersunk bolt and nut assemblies to this document have been designed to allow preloading of at least 0,7 fub As1)according to EN 1993-1-8 (Eurocode 3) and to obtain ductility predominantly by elon
31、gation of the bolt. For this purpose the components have the following characteristics: nut height according to style 1 (see EN ISO 4032), thread length of the bolt according to ISO 888. 2 Normative references The following referenced documents are indispensable for the application of this document.
32、 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 - Charpy impact test - Part 1
33、: 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 structural bolting assemblies for p
34、reloading - Part 5: Plain washers EN 14399-6, High-strength structural bolting assemblies for preloading - Part 6: Plain chamfered washers 1) fubis the nominal tensile strength (Rm) and Asis the nominal stress area of the bolt. BS EN 14399-7:2007EN 14399-7:2007 (E) 6 EN 20898-2, Mechanical propertie
35、s of fasteners - Part 2: Nuts with specified proof load values - Coarse thread (ISO 898-2:1992) 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 made of carbon steel and alloy
36、 steel - Part 1: Bolts, screws and studs (ISO 898-1:1999) EN ISO 3269, Fasteners - Acceptance inspection (ISO 3269:2000) EN ISO 4032, Hexagon nuts, style 1 - Product grades A and B (ISO 4032:1999) EN ISO 4759-1, Tolerances for fasteners - Part 1: Bolts, screws, studs and nuts - Product grades A, B a
37、nd C (ISO 4759-1:2000) EN ISO 6157-2, Fasteners - 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 scre
38、w threads General plan ISO 888, Bolts, screws and studs Nominal lengths, and thread lengths for general purpose bolts ISO 965-2, ISO general purpose metric screw threads - Tolerances - Part 2: Limits of sizes for general purpose ex-ternal and internal screw threads - Medium quality ISO 965-5, ISO ge
39、neral purpose metric screw threads - Tolerances - Part 5: Limits of sizes for internal screw threads to mate with hot-dip galvanized external screw threads with maximum size of tolerance position h before galvanizing 3 Terms and definitions For the purposes of this document, the terms and definition
40、s given in EN 14399-1:2005 and 14399-2:2005 apply. 4 Bolts 4.1 General The test method for suitability for preloading shall be as specified in EN 14399-2. 4.2 Dimensions of bolts See Figure 1 and Table 2. BS EN 14399-7:2007EN 14399-7:2007 (E) 7 The difference between lgand lsshall not be less than 1
41、,5 P. aIncomplete thread u 2P Figure 1 Dimensions of bolts BS EN 14399-7:2007EN 14399-7:2007 (E) 8 Table 2 Dimensions of bolts aDimensions in millimetresThread d M12 (M14)b M16 (M18)b M20 Pc 1,75 2 2 2,5 2,5 d 30 34 38 42 46 e 40 44 48 52 b (ref.) f 65 max. 12,70 14,70 16,70 18,70 20,84 dsmin. 11,30
42、 13,30 15,30 17,30 19,16 max. 24,00 28,00 32,00 36 40 dkmin. 23,16 27,16 31,16 35 39 max. 16,5 19,5 22,5 25,5 28,5 i min. 15,5 18,5 21,5 24,5 27,5 nom. 8,00 9,00 10,00 12,0 13,0 max.i8,75 9,75 10,75 12,9 13,9 kmin.j7,25 8,25 9,25 11,1 12,1 max. 1,6 1,6 1,6 2 2 r min. 1,2 1,2 1,2 1,5 1,5 max. 3,0 3,0
43、 3,0 3,5 3,5 n min. 2,5 2,5 2,5 3,0 3,0 t max. 4,5 4,5 4,5 5,0 5,0 min. 3,0 3,0 3,0 3,5 3,5 lsand lgg, h l nom. min. max. lsmin.lgmax.lsmin.lgmax.lsmin.lgmax.lsmin.lgmax.lsmin.lgmax.45 43,75 46,25 14 19,25 50 48,75 51,25 14 19,25 18 24 55 53,5 56,5 16,25 25 18 24 60 58,5 61,5 21,25 30 16 22 18 24 23
44、 30,5 65 63,5 66,5 26,25 35 21 31 18 24 23 30,5 70 68,5 71,5 31,25 40 26 36 22 32 23 30,5 75 73,5 76,5 36,25 45 31 41 27 37 21 28,5 23 30,5 80 78,5 81,5 41,25 50 36 46 32 42 25,5 38 23 30,5 85 83,25 86,75 46,25 55 41 51 37 47 30,5 43 26,5 39 90 88,25 91,75 51,25 60 46 56 42 52 35,5 48 31,5 44 95 93,
45、25 96,75 56,25 65 51 61 47 57 40,5 53 36,5 49 100 98,25 101,75 61,25 70 56 66 52 62 45,5 58 41,5 54 110 108,25 111,75 66 76 62 72 55,5 68 51,5 64 120 118,25 121,75 76 86 72 82 65,5 78 61,5 74 130 128 132 80 90 76 86 69,5 82 65,5 78 140 138 142 90 100 86 96 79,5 92 75,5 88 150 148 152 100 110 96 106
46、89,5 102 85,5 98 160 156 164 110 120 99,5 112 BS EN 14399-7:2007EN 14399-7:2007 (E) 9 Table 2 (continued)Dimensions in millimetresThread d M22M24M27M30M36 Pc 2,5 3 3 3,5 4 b (ref.) d 50 54 60 66 78 e 56 60 66 72 84 f 69 73 79 85 97 max. 22,84 24,84 27,84 30,84 37,00 dsmin. 21,16 23,16 26,16 29,16 35
47、,00 max. 44 48 54 60,0 72,0 dkmin. 43 47 53 58,8 70,8 max. 30,5 33,5 37,5 42,5 50,5 i min. 29,5 32,5 36,5 41,5 49,5 nom. 14,0 16,0 17,5 19,50 23,00 max.i14,9 16,9 18,4 20,55 24,05 kmin.j13,1 15,1 16,6 18,45 21,95 max. 2 2 2,5 2,5 2,5 r min. 1,5 1,5 2 2 2 max. 3,5 3,5 3,5 4,0 4,0 n min. 3,0 3,0 3,0 3
48、,5 3,5 t max. 5,0 5,0 5,0 5,5 5,5 min. 3,5 3,5 3,5 4,0 4,0 lsand lgg, h l nom. min. max. lsmin.lgmax.lsmin.lgmax.lsmin.lgmax.lsmin.lgmax.lsmin.lgmax.65 63,5 66,5 25 32,5 70 68,5 71,5 25 32,5 28 37 75 73,5 76,5 25 32,5 28 37 80 78,5 81,5 25 32,5 28 37 31 40 85 83,25 86,75 25 32,5 28 37 31 40 90 88,25 91,75 27,5 40 28 37 31 40 34,5 45 95 93,25 96,75 32,5 45 28 37 31 40 34,5 45 100 98,25 101,75 37,5 50 31 46 31 40 34,5 45 110 108,25 111,75 47,5 60 41 56 31 40 34,5 45 41 53 1
