EN 14399 Specification
HIGH-STRENGTH STRUCTURAL BOLTING ASSEMBLIES FOR PRELOADING
Structural bolting in Europe comprises two technical solutions 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 below. 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.
|
Items |
Bolt/Nut/Washer Assembly |
Bolt/Nut/Washer Assembly |
|
System |
System HR |
System HV |
|
General Requirements |
EN 14399-1 |
|
|
Bolt/Nut Assembly |
EN 14399-3 |
EN 14399-4 |
|
Marking |
HR |
HV |
|
Property Class |
8.8/8 |
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 |
EN 14399-2 |
|
|
Preloading |
||
EN 14399 PARTS 1-10
There are currently 10 parts BS EN 14399 which are listed in the table below.
|
BS EN 14399 Part One |
General Requirements |
|
BS EN 14399 Part Two |
Suitability test for Preloading (assembly test)* |
|
BS EN 14399 Part Three |
Hexagon Bolt and Nut Assemblies (HR 8.8 and 10.9) |
|
BS EN 14399 Part Four |
Hexagon Bolt and Nut Assemblies (HV 10.9) |
|
BS EN 14399 Part Five |
Plain Washers |
|
BS EN 14399 Part Six |
Plain Chamfered Washers |
|
BS EN 14399 Part Seven |
Countersunk Bolt and Nut (HR 8.8 and 10.9) |
|
BS EN 14399 Part Eight |
Hexagon Fitted Bolt and Nut Assemblies (HV 10.9) |
|
BS EN 14399 Part Nine |
Direct Tension Indicators |
|
BS EN 14399 Part Ten |
Tension Control Bolt and Nut Assemblies (HRC 10.9) |
Note: The `8.8 HR, 10.9 HR' means that the product was manufactured to BS EN 14399-3
Note: The `10.9 HV` means that the product was manufactured to BS EN 14399-4
EN14399-3 Class 8.8HR MECHANICAL PROPERTIES BOLTS
|
Items |
Stress Area |
Proof Load |
Ultimate Load |
Hardness Rockwell HRC |
|
|
2 |
Min. kN |
Min. kN |
|||
|
Dia. |
mm |
|
|
Min. |
Max. |
|
M12 |
84.3 |
50.7 |
70 |
22 |
32 |
|
M16 |
157 |
94.5 |
130 |
22 |
32 |
|
M20 |
245 |
147 |
203 |
23 |
34 |
|
M22 |
303 |
182 |
252 |
23 |
34 |
|
M24 |
353 |
212 |
293 |
23 |
34 |
|
M27 |
459.33 |
275 |
381 |
23 |
34 |
|
M30 |
561 |
337 |
466 |
23 |
34 |
|
M36 |
817 |
490 |
678 |
23 |
34 |
EN14399-3 Class 10.9HR MECHANICAL PROPERTIES BOLTS
|
Items |
Stress Area |
Proof Load |
Ultimate Load |
Hardness Rockwell HRC |
|
|
2 |
Min. kN |
Min. kN |
|||
|
Dia. |
mm |
|
|
Min. |
Max. |
|
M12 |
84.3 |
70 |
87.7 |
32 |
39 |
|
M16 |
157 |
130 |
163 |
32 |
39 |
|
M20 |
245 |
203 |
255 |
32 |
39 |
|
M22 |
303 |
252 |
315 |
32 |
39 |
|
M24 |
353 |
293 |
367 |
32 |
39 |
|
M27 |
459.33 |
381 |
477 |
32 |
39 |
|
M30 |
561 |
466 |
583 |
32 |
39 |
|
M36 |
817 |
678 |
850 |
32 |
39 |