EN 15048-1:2007

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Garnituren für nicht planmäßig vorgespannte Schraubenverbindungen für den Metallbau - Teil 1: Allgemeine AnforderungenBoulonnerie de construction métallique non précontrainte - Partie 1 : Exigences généralesNon-preloaded structural bolting assemblies - Part 1: General requirements21.060.10Sorniki, vijaki, stebelni vijakiBolts, screws, studsICS:Ta slovenski standard je istoveten z:EN 15048-1:2007SIST EN 15048-1:2007en,fr,de01-september-2007SIST EN 15048-1:2007SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15048-1April 2007ICS 21.060.01 English VersionNon-preloaded structural bolting assemblies - Part 1: GeneralrequirementsBoulonnerie de construction métallique non précontrainte -Partie 1 : Exigences généralesGarnituren für nicht planmäßig vorgespannteSchraubenverbindungen für den Metallbau - Teil 1:Allgemeine AnforderungenThis European Standard was approved by CEN on 18 September 2006.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 CEN 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 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, 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, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2007 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15048-1:2007: ESIST EN 15048-1:2007

Clauses of this European Standard addressing the provisions of EU Construction Products Directive (89/106/EEC dated 21 December 1988).20 Bibliography.25
(ISO 3506-2:1997) EN ISO 6507-1, Metallic materials - Vickers hardness test - Part 1: Test method (ISO 6507-1:2005) EN ISO 9001, Quality management systems - Requirements (ISO 9001:2000) SIST EN 15048-1:2007

1) Size of a bolt means thread diameter and length. 2) The complete product designation of the assembly includes the designation and reference standard(s), if any, or the specifi-cation of each component. SIST EN 15048-1:2007

embrittlement, especially during the coating process.
NOTE Appropriate additional processes should be considered when the risk of hydrogen embrittlement cannot be avoided.
4.2.5 Finish and coating Finish and coating, if applied, shall be as specified in the relevant coating standards. Coatings shall not impair the mechanical properties or the functional characteristics of the assembly. Coatings of cadmium or cadmium alloy are not permitted. Coating of all components of an assembly shall be compatible and shall have equivalent corrosion resistance. Coating of each component shall be under the control of the manufacturer of the assemblies. 4.3 Delivery conditions All fasteners shall be supplied to the purchaser either in the original unopened, single sealed container or alterna-tively in separate sealed containers by the manufacturer of the assemblies. The suitability for tensile loading of the assembly supplied to the purchaser shall be demonstrated by the tensile test according to EN 15048-2. Containers of bolt/nut assemblies or their components according to this European Standard shall be labelled with the complete designation of the fasteners including:  additional letters "SB" (for use in Structural Bolting),  relevant lot number(s) and
 identification of the manufacturer of the assembly. Washers are usually supplied in separate containers. Assemblies shall be supplied in one of the following alterna-tives: a) Bolts and nuts supplied by one manufacturer. The elements of an assembly shall be packed together in one package that is labelled with an assembly lot number and the manufacturer's identification. The suitability test is to be performed on each assembly lot by use of representative sample testing as specified in 6.3. b) Bolts and nuts supplied by one manufacturer. Each element shall be packed in separate packages that are labelled with the manufacturing lot number of the components and the manufacturer's identification. The ele-ments in an assembly are freely interchangeable within the deliveries of one nominal thread diameter. The SIST EN 15048-1:2007

carbon steel and alloy steel 4.6, 4.8, 5.6, 5.8, 6.8, 8.8, 10.9 stainless steel 50, 70, 80 Elongation after fracture
EN ISO 898-1
EN ISO 3506-1 Minimum tensile strength
EN ISO 898-1
EN ISO 3506-1 Lower yield strength or
Stress at 0,2 % non-proportional elongation
EN ISO 898-1
EN ISO 3506-1 Stress under proof load
EN ISO 898-1
not applicable Strength under wedge loading
EN ISO 898-1
not applicable Hardness
EN ISO 898-1
not applicable
at – 20 °C 27 J — 27 Ja Impact strength KV,min
at + 20 °C — 27 J — a Impact strength may be tested at – 60 °C, if required, with a minimum impact strength of KV =27 J.
4.4.2.3 Nuts Table 3 — Nuts Relevant standard for property class Mechanical characteristic carbon steel and alloy steel 4, 5, 6, 8, 10, 12 stainless steel 50, 70, 80 Stress under proof load EN 20898-2 EN ISO 3506-2 Hardness EN 20898-2 not applicable
4.4.2.4 Washers Table 4 — Washers Mechanical characteristic For all carbon steel, alloy steel and stainless steel bolt property classes
For property classes 8.8 and 10.9 in a single lap joint according to EN 1993-1-8:2005, 3.6.1 Hardness minimum 100 HV 300 HV to 370 HV
4.4.3 Characteristics of the assembly 4.4.3.1 Appropriate combinations of bolts, nuts and washers The appropriate combinations of bolts, nuts and washers with regard to product grades given in Table 5 and with regard to property classes given in Table 6 shall be used. Table 5 — Appropriate combinations of bolts, nuts and washers with regard to product grades according to EN ISO 4759 Bolts Nuts Washers Product grade A or B Product grade A, B or C Product grade A or C Product grade C Product grade A, B or C Product grade C
300 HV min. a Assemblies made of stainless steel Bolts Nuts Washers Grade Property class Property class Hardness 50 50, 70 or 80 70 70 or 80 A2, A3, A4 or A5 80 80 100 HV min. a 300 HV min. is required for property classes 8.8 and 10.9 in a single lap joint with only one bolt or single row of bolts according to EN 1993-1-8:2005, 3.6.1.
4.4.3.2 Tensile resistance of bolt/nut assemblies The minimum tensile resistance of the bolt/nut assembly shall comply with the values specified in Tables 7 and 8. The values are based on the minimum tensile strength (Rm, min). The tensile resistances shall apply to any bolt/nut combination as specified in Tables 5 and 6. SIST EN 15048-1:2007

84,3
33 700
35 400
42 200
43 800
50 600
70 000
87 700 M14
46 000
48 300
57 500
59 800
69 000
95 500 120 000 M16
62 800
65 900
78 500
81 600
94 000 130 000 163 000 M18
76 800
80 600
96 000 99 800 115 000 159 000 200 000 M20
98 000 103 000 122 000 127 000 147 000 203 000 255 000 M22
303 121 000 127 000 152 000 158 000 182 000 252 000 315 000 M24
353 141 000 148 000 176 000 184 000 212 000 293 000 367 000 M27
459 184 000 193 000 230 000 239 000 275 000 381 000 477 000 M30
561 224 000 236 000 280 000 292 000 337 000 466 000 583 000 M33
694 278 000 292 000 347 000 361 000 416 000 576 000 722 000 M36
817 327 000 343 000 408 000 425 000 490 000 678 000 850 000 NOTE To achieve full tensile resistance, hot dip galvanized assemblies can require special measures, see EN ISO 10684:2004, Annex F.
Table 8 — Tensile resistance of bolt/nut assemblies made of stainless steel Property class 50 70 80 Thread Nominal stress area As, nom mm2 Minimum tensile resistance (As, nom × Rm, min), in N M12
84,3
42 200
59 000
67 400
M14
57 500
80 500
92 000
M16
78 500 110 000
126 000
M18
96 000 134 000
154 000
M20
245 122 000 172 000
196 000
M22
303 152 000 212 000
242 000
M24
353 176 000 247 000
282 000
M27
459 230 000 321 000a 367 000a M30
561 280 000 393 000a 449 000a M33
694 347 000 486 000a 555 000a M36
817 408 000 572 000a 654 000a a The tensile resistance shall apply for assemblies of studs or stud bolts with two nuts only. These sizes are not included in EN ISO 3506,because they are difficult to manufacture.
Key 1
Identification mark of the manufacturer of the assembly Figure 1 - Example of bolt marking
4.4.4.2 Nuts Nuts according to this European Standard shall be marked with:  the property class marking in accordance with EN 20898-2 or EN ISO 3506-2,  the identification mark of the manufacturer of the assembly,  the special marking "SB" (for use in Structural Bolting). The marking may be either indented or embossed on one of the bearing surfaces.
Key 1
Identification mark of the manufacturer of the assembly Figure 2 - Example of nut marking SIST EN 15048-1:2007

4.4.4.3 Washers Washers without special marking may be used, because they are of minor importance for shear or tensile resis-tance of the assemblies. 4.5
Durability Finish and coating of assemblies shall be in accordance with 4.2.5. A surface coating can be used to enhance the inherent durability of assemblies against corrosion, if required. This durability can be achieved either by applying a specified coating, or as part of the durability of the structure in which the assemblies are used. NOTE prEN 1090-2 gives information about EN and ISO standards for durability of structures against corrosion, protective coatings and method of application. The mechanical durability of assemblies shall be assured for a reasonable economic working life if the assembly complies with the requirements of this standard and is used in accordance with the manufacturer's specification for tightening. 5 Testing for conformity evaluation 5.1 Testing for dangerous substances Release of dangerous substances may be assessed indirectly by controlling the content of the substances in the materials used. 5.2 Testing of dimensional requirements of the components The tolerances of critical dimensions of the components shall be checked by standard gauges or measuring equipment of the required accuracy as given in Tables 9 to 11. Table 9 — Bolts Critical dimensiona Accuracy (mm) Method Width across flats (s) or head diameter (dk)
≤ 0,05
Measurement Width across corners (e)
≤ 0,05
Measurement Head height (k)
≤ 0,05
Measurement Shank diameter (ds)
≤ 0,05
Measurement Nominal length (l)
≤ 0,1
Measurement Shank length (ls)
≤ 0,1
Measurement Grip length (lg)
≤ 0,1
Measurement Thread dimensions —
Gauge Head angle (of countersunk bolts) (α)
≤ 0,5°
Measurement a Symbols and descriptions of dimensions as defined in EN 20225.
Table 10 — Nuts Critical dimensiona Accuracy (mm) Method Width across flats (s)
≤ 0,05
Measurement Width across corners (e)
≤ 0,05
Measurement Nut height (m)
≤ 0,05
Measurement Thread dimensions —
Gauge a Symbols and descriptions of dimensions as defined in EN 20225.
Table 11 — Washers Critical dimensiona Accuracy (mm) Method Hole diameter (d1)
≤ 0,1/—
Measurement/Gauge Outer diameter (d2)
≤ 0,1
Measurement Thickness (h)
≤ 0,05
Measurement a Symbols and descriptions of dimensions as defined in EN ISO 4759-3.
5.3 Testing of mechanical characteristics of components The mechanical characteristics of bolts, nuts and washers shall be tested in accordance with Tables 12 to 14. Table 12 — Bolts Reference standard for the test procedure Mechanical characteristic Test carbon steel
and alloy steel stainless steel Elongation after fracture Tensile test EN ISO 898-1 EN ISO 3506-1 Minimum tensile strength Tensile tes
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