EN 14399-3:2005

High-strength structural bolting assemblies for preloading - Part 3: System HR - Hexagon bolt and nut assemblies

This part of this European Standard specifies, together with prEN 14399-1, the requirements for assemblies of high-strength structural bolts and nuts of system HR suitable for preloaded joints with large widths across flats, thread sizes M12 to M36 and property classes 8.8/8 and 10.9/10.
Bolt and nut assemblies to this part of this European Standard have been designed to allow preloading of at least 0,7 fub´As    according to ENV 1993-1-1 (Eurocode 3) and to obtain ductility predominantly by plastic elongation of the bolt. For this purpose the components have the following characteristics:
¾ nut height according to style 1 (see ISO 4032)
¾ thread length of the bolt according to ISO 888
Bolt and nut assemblies to this part of this European Standard include washers according to prEN 14399-6 or to prEN 14399-5 (under the nut only).
NOTE   Attention is drawn to the importance of ensuring that the bolts are correctly used if satisfactory result are to be ob-tained. For recommendations concerning proper application, reference to ENV 1090-1 is made.
The test method for suitability for preloading is specified in prEN 14399-2.

Hochfeste planmäßig vorspannbare Schraubenverbindungen für den Metallbau - Teil 3: System HR - Garnituren aus Sechskantschrauben und -muttern

Dieser Teil dieser Europäischen Norm enthält, gemeinsam mit prEN 14399-1, die Anforderungen für hochfeste
Garnituren mit Stahlbauschrauben und -muttern des Systems HR mit großer Schlüsselweite in den Abmessungen M12 bis M36 und den Festigkeitsklassen 8.8/8 und 10.9/10, die für vorspannbare Schraubenverbindungen geeignet sind.
Die Garnituren aus Schrauben und Muttern, die diesem Teil dieser Europäischen Norm entsprechen, wurden so gestaltet, dass sie ein Vorspannen auf mindestens 0,7 fub´As*) in Übereinstimmung mit ENV 1993-1-1 (Eurocode 3) erlauben, und dass sie ihr Verformungsvermögen vorwiegend durch plastische Verlängerung der Schraube
erreichen. Zu diesem Zweck weisen die Komponenten folgende Merkmale auf:
- Mutterhöhe entsprechend Typ 1 (siehe ISO 4032)
- Gewindelänge der Schraube entsprechend ISO 888
Garnituren aus Schrauben und Muttern, die diesem Teil dieser Europäischen Norm entsprechen, beinhalten
Scheiben nach prEN 14399-6 oder nach prEN 14399-5 (nur unter der Mutter).
ANMERKUNG   Es wird darauf hingewiesen, dass zufriedenstellende Ergebnisse nur dann erzielt werden, wenn sichergestellt ist, dass die Schrauben sachgerecht eingesetzt werden. Für Empfehlungen zur richtigen Anwendung wird auf ENV 1090-1 verwiesen.
Die Prüfung der Eignung für das Vorspannen ist in prEN 14399-2 festgelegt.

Boulonnerie de construction à haute résistance apte à la précontrainte - Partie 3 : Système HR - Boulons à tête hexagonale (vis + écrou)

La présente partie de cette Norme européenne, avec le prEN 14399-1, spécifie les prescriptions applicables aux vis et aux écrous des boulons pour construction à haute résistance du système HR, à surplat de série large, de diamètre de filetage de M12 à M36 et de classes de qualité 8.8/8 et 10.9/10, utilisables dans les assemblages précontraints.
Les ensembles vis et écrous conformes à la présente partie de cette Norme européenne ont été conçus de manière à permettre une précontrainte d'au moins 0,7 fub x As )  conformément à l'ENV 1993-1-1 (Eurocode 3) et à obtenir la ductilité principalement par allongement plastique de la vis. Pour ce faire, les éléments doivent avoir les caractéristiques suivantes :
¾ hauteur d'écrou conforme au style 1 (voir EN ISO 4032) ;
¾ longueur filetée de la vis conforme à l'ISO 888.
Les ensembles vis et écrous assemblés conformes à la présente partie de la Norme européenne comportent des rondelle(s) conformes au prEN 14399-5 (sous l'écrou uniquement) ou au prEN 14399-6.
NOTE   Il est important de s'assurer que les boulons sont utilisés de façon correcte afin d'obtenir un résultat satisfaisant. Pour les recommandations relatives à une bonne utilisation, se référer à l'ENV 1090-1.
La méthode d'essai de l'aptitude à la mise en précontrainte est spécifiée dans le prEN 14399-2.

Visokotrdnostne strukturne vijačne zveze za prednapetje - 3. del: Sistem HR - Zveze vijakov s šestrobo glavo in šestrobo matico

General Information

• Status: Withdrawn
• Publication Date: 15-Mar-2005
• Withdrawal Date: 17-Feb-2015
• ICS: 21.060.10 - Bolts, screws, studs
• ICS: 21.060.20 - Nuts
• Technical Committee: CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
• Drafting Committee: CEN/TC 185 - Threaded and nonthreaded mechanical fasteners and accessories
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 18-Feb-2015
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Directive: 97/23/EC - Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws of the Member States concerning pressure equipment
• Mandate: M/071 - Mandate to CEN for standardization in the field of Pressure equipment
• Mandate: M/120 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on structural metallic products and ancillaries
• Ref Project: SIST EN 14399-3:2005 - High-strength structural bolting assemblies for preloading - Part 3: System HR - Hexagon bolt and nut assemblies

Relations

• Replaced By: EN 14399-3:2015 - High-strength structural bolting assemblies for preloading - Part 3: System HR - Hexagon bolt and nut assemblies
• Effective Date: 19-Mar-2011

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Hochfeste planmäßig vorspannbare Schraubenverbindungen für den Metallbau - Teil 3: System HR - Garnituren aus Sechskantschrauben und -mutternBoulonnerie de construction a
haute résistance apte a la précontrainte - Partie 3 : Systeme HR - Boulons a tete hexagonale (vis + écrou)High-strength structural bolting assemblies for preloading - Part 3: System HR - Hexagon bolt and nut assemblies21.060.20MaticeNuts21.060.10Sorniki, vijaki, stebelni vijakiBolts, screws, studsICS:Ta slovenski standard je istoveten z:EN 14399-3:2005SIST EN 14399-3:2005en01-maj-2005SIST EN 14399-3:2005SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14399-3March 2005ICS 21.060.10; 21.060.20English versionHigh-strength structural bolting assemblies for preloading - Part3: System HR - Hexagon bolt and nut assembliesBoulonnerie de construction métallique à
haute résistanceapte à la précontrainte - Partie 3 : Système HR - Boulons àtête hexagonale (vis + écrou)Hochfeste planmäßig vorspannbareSchraubenverbindungen für den Metallbau - Teil 3: SystemHR - Garnituren aus Sechskantschrauben und -mutternThis European Standard was approved by CEN on 30 April 2004.CEN members are bound to comply with the 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 Central Secretariat or 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies 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 FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14399-3:2005: ESIST EN 14399-3:2005

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 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 responsible 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 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 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 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 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 practice 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 strength structural bolting for preloading are under preparation. SIST EN 14399-3:2005

EN 493, Fasteners — Surface discontinuities — Nuts. EN 10045-1, Metallic materials — Charpy impact test — Part 1: Test method. EN 14399-1, High-strength structural bolting assemblies for preloading — Part 1: General requirements. EN 14399-2, High-strength structural bolting assemblies for preloading — Part 2: Suitability test for preloading. EN 14399-5, High-strength structural 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). 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 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 10684, Fasteners - Hot dip galvanized coatings (ISO 10684:2004).
1 fub is the nominal tensile strength (Rm) and As the stress area of the bolt. SIST EN 14399-3:2005

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 screw threads with maximum size of tolerance position h before galvanizing.
3 Bolts 3.1 Dimensions of bolts See Figure 1 and Table 2
NOTE The difference between lg and ls should not be less than 1,5 P. Key a Incomplete thread u ≤ 2P b 15° to 30° Figure 1 — Dimensions of bolts SIST EN 14399-3:2005

Dimensions in millimetres Thread d M12 (M14)b M16 (M18)b M20
P c 1,75 2 2 2,5 2,5
b (ref.) d 30 34 38 42 46
e — 40 44 48 52
f — — — — 65
c max. 0,8 0,8 0,8 0,8 0,8
min. 0,4 0,4 0,4 0,4 0,4
da
max. 15,2 17,2 19,2 21,7 24,4
ds
max. 12,70 14,70 16,70 18,70 20,84
min. 11,30 13,3 15,30 17,3 19,16
dw
max. g g g g g
min. 20,1 22 24,9 27,7 29,5
e
min. 23,91 26,17 29,56 32,95 35,03
k
nom. 7,5 8,8 10 11,5 12,5
max. 7,95 9,25 10,75 12,4 13,40
min. 7,05 8,35 9,25 10,6 11,60
kw
min. 4,9 5,85 6,5 7,42 8,1
r
min. 1,2 1,2 1,2 1,5 1,5
s
max. 22 24 27 30 32
min. 21,16 23,16 26,16 29,16 31 SIST EN 14399-3:2005

(continued)
Dimensions in millimetres Thread d M12 (M14)b M16 (M18)b M20 l ls and lg h, j
ls lg ls lg ls lg ls lg ls lg nom. min. max. min. max. min. max. min. max. min. max. min. max.
33,75
36,25
11,25
38,75
41,25
11,25
43,75
46,25
6,25
10 17,5
48,75
51,25
11,25
10 17,5
53,5
56,5
16,25
10 17,5
58,5
61,5
21,25
26 12
22 9
16,5
10 17,5
63,5
66,5
26,25
31 17
27 10,5
10 17,5
68,5
71,5
31,25
36 22
32 15,5
28 11,5 24
73,5
76,5
36,25
41 27
37 20,5
33 16,5 29
78,5
81,5
41,25
46 32
42 25,5
38 21,5 34
83,25
86,75
46,25
51 37
47 30,5
43 26,5 39
88,25
91,75
51,25
56 42
52 35,5
48 31,5 44
93,25
96,75
56,25
61 47
57 40,5
53 36,5 49 100
98,25
101,75
61,25
66 52
62 45,5
58 41,5 54 110
108,25
111,75
76 62
72 55,5
68 51,5 64 120
118,25 121,75
86 72
82 65,5
78 61,5 74 130
90 76
86 69,5
82 65,5 78 140
90 100 86
96 79,5
92 75,5 88 150
100 110 96 106 89,5
102 85,5 98 160
110 120
99,5
(continued)
Dimensions in millimetres Thread d M22 M24 M27 M30 M36
P c
2,5
3,5
b (ref.) d
e
f
c max.
0,8
0,8
0,8
0,8
0,8
min.
0,4
0,4
0,4
0,4
0,4
da
max.
26,4
28,4
32,4
35,4
42,4
ds
max.
22,84
24,84
27,84 30,84
37,00
min.
21,16
23,16
26,16
29,16
35,00
dw
max. g g g g g
min.
33,3
38,0
42,8
46,6
55,9
e
min.
39,55
45,20
50,85 55,37
66,44
k
nom.
18,7
22,5
max.
14,90
15,90
17,90
19,75
23,55
min.
13,10
14,10
16,10
17,65
21,45
kw
min.
9,2
9,9
11,3
12,4
15,0
r
min.
1,5
1,5
2,0
2,0
2,0
s
max.
min.
58,8
(concluded)
Dimensions in millimetres Thread d M22 M24 M27 M30 M36 l ls and lg
h, j
ls lg ls lg ls lg ls lg ls lg nom. min. max. min. max. min. max. min. max. min. max. min. max. 30
28,95
31,05
33,75
36,25
38,75
41,25
43,75
46,25
48,75
51,25
18,5
53,5
56,5
18,5
58,5
61,5
18,5
13,5
22,5
63,5
66,5
18,5
13,5
22,5
68,5
71,5
18,5
13,5
22,5
25,5
73,5
76,5 12,5
13,5
22,5
25,5
78,5
81,5 17,5
13,5
22,5
25,5
83,25
86,75 22,5
13,5
22,5
25,5 18
30 90
88,25
91,75 27,5
25,5 18
30 95
93,25
96,75 32,5
25,5 18
30 100
98,25
101,75 37,5
16,5
34 18
30 110
108,25
111,75 47,5
26,5
44 18
30 120 118,25 121,75 57,5
36,5
54 22
42 130
132 61,5
40,5
58 26
46 140
142 71,5
50,5
68 36
56 150
152 81,5
60,5
78 46
66 160
85 100
70,5
...