BS EN 14399-8:2018
$142.49
High-strength structural bolting assemblies for preloading – System HV. Hexagon fit bolt and nut assemblies
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 24 |
This European Standard specifies together with EN 14399-1 and EN 14399-2, the requirements for assemblies of high-strength structural bolts and nuts of system HV suitable for preloaded joints with large width across flats, thread sizes M12 to M36 and property classes 10.9/10.
Bolting assemblies (including fit bolts with nominal shank diameter d + 1 mm) in accordance with 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 plastic deformation of the engaged threads. For this purpose, the components have the following characteristics:
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nut height approximately 0,8 D;
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bolt with short thread length.
Bolting assemblies in accordance with this document include washers according to EN 14399-6.
NOTE Attention is drawn to the importance of ensuring that the bolting assemblies are correctly used if satisfactory results are to be obtained. For recommendations concerning proper application, reference to EN 1090-2 is made.
General requirements and requirements for suitability for preloading are specified in EN 14399-2.
Clamp lengths and grip lengths for the bolting assemblies are specified in the normative Annex A.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 8 | 1 Scope 2 Normative references |
| 9 | 3 Fit bolts 3.1 Dimensions of fit bolts |
| 12 | 3.2 Specifications for fit bolts and reference standards |
| 13 | 3.3 Marking of fit bolts 4 Nuts 4.1 Dimensions of nuts |
| 15 | 4.2 Specification for nuts and reference standards 4.3 Decarburization of the nut thread 4.4 Marking of nuts |
| 16 | 5 Designation of the bolt/nut assemblies 6 Associated washers 7 Functional characteristics of the bolt/nut/washers assembly 7.1 General |
| 17 | 7.2 Maximum individual value of the bolt force during fitness for purpose test (Fbi max) 7.3 Values of angle Δθ1 7.4 Values of angle Δθ2 7.5 Individual values of the k-factor (ki), mean value of the k-factor (km) and coefficient of variation of the k-factor (Vk) 7.5.1 Individual values of the k-factor (ki) for k-class K1 |
| 18 | 7.5.2 Mean value of the k-factor (km) and coefficient of variation of the k-factor (Vk) for k-class K2 |
| 19 | Annex A (normative)Clamp lengths and grip lengths |
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BS EN 14399-8:2018
High-strength structural bolting assemblies for preloading – System HV. Hexagon fit bolt and nut assemblies…
