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 widths across flats, thread sizes M12 to M36 and property classes 10.9\/10. Bolting assemblies in accordance with this document have been designed to allow preloading of at least 0,7 fub \u00d7 As ) 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: – nut height approximately 0,8 d; – 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.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 33<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | Table 1 \u2014 Composition of high-strength structural bolting assemblies and component marking <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | 1 Scope 2 Normative references <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | 3 Bolts 3.1 Dimensions of bolts Figure 1 \u2014 Dimensions of bolts <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | Table 2 \u2014 Dimensions of bolts <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | 3.2 Specifications for bolts and reference standards Table 3 \u2014 Specifications for bolts and reference standards 3.3 Marking of bolts <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | Figure 2 \u2014 Example of bolt marking 4 Nuts 4.1 Dimensions of nuts Figure 3 \u2014 Dimensions of nuts <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | Table 4 \u2014 Dimensions of nuts <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | 4.2 Specification for nuts and reference standards Table 5 \u2014 Specifications for nuts and reference standards 4.3 Decarburization of the nut thread 4.4 Marking of nuts <\/td>\n<\/tr>\n | ||||||
| 44<\/td>\n | Figure 4 \u2014 Example of nut marking 5 Designation of the bolt\/nut assemblies 6 Associated washers 7 Functional characteristics of the bolt\/nut\/washers assembly 7.1 General <\/td>\n<\/tr>\n | ||||||
| 45<\/td>\n | 7.2 Maximum individual value of the bolt force during fitness for purpose test (Fbi,max) 7.3 Values of angle \u0394\u03b81 Table 6 \u2014 Values for \u0394\u03b81 7.4 Values of angle \u0394\u03b82 Table 7 \u2014 Values for \u0394\u03b82 <\/td>\n<\/tr>\n | ||||||
| 46<\/td>\n | 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 7.5.2 Mean value of the k-factor (km) and coefficient of variation of the k-factor (Vk) for k-class K2 <\/td>\n<\/tr>\n | ||||||
| 47<\/td>\n | Annex A (normative) Clamp lengths and Grip lengths Figure A.1 \u2014 Clamp length \u03a3t and Grip length ts2 <\/td>\n<\/tr>\n | ||||||
| 48<\/td>\n | Table A.1 \u2014 Clamp lengths \u03a3ta <\/td>\n<\/tr>\n | ||||||
| 49<\/td>\n | Table A.2 \u2014 Grip length ts2a <\/td>\n<\/tr>\n | ||||||
| 50<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Tracked Changes. High-strength structural bolting assemblies for preloading – System HV. Hexagon bolt and nut assemblies<\/b><\/p>\n |