| Classe 12.9 | ||||||||||
| d nominal (mm) | Précision de serrage | µ moyen=0.10 | µ moyen=0.15 | µ moyen=0.20 | ||||||
| Cs (N.m) | Fomin (N) | FoMax (N) | Cs (N.m) | Fomin (N) | FoMax (N) | Cs (N.m) | Fomin (N) | FoMax (N) | ||
| 3 | A | 1,64 | 3574 | 3951 | 2,09 | 3227 | 3567 | 2,43 | 2901 | 3207 |
| B | 1,57 | 3232 | 3951 | 2 | 2918 | 3567 | 2,32 | 2623 | 3207 | |
| C | 1,44 | 2634 | 3951 | 1,83 | 2378 | 3567 | 2,12 | 2138 | 3207 | |
| D | 1,15 | 1317 | 3951 | 1,46 | 1189 | 3567 | 1,7 | 1069 | 3207 | |
| 4 | A | 3,78 | 6196 | 6849 | 4,79 | 5589 | 6178 | 5,5 | 5023 | 5552 |
| B | 3,61 | 5603 | 6849 | 4,57 | 5054 | 6178 | 5,2 | 4542 | 5552 | |
| C | 3,31 | 4566 | 6849 | 4,19 | 4118 | 6178 | 4,85 | 3701 | 5552 | |
| D | 2,65 | 2283 | 6849 | 3,35 | 2059 | 6178 | 3,88 | 1850 | 5552 | |
| 5 | A | 7,4 | 10129 | 11196 | 9,5 | 9152 | 10116 | 11 | 8231 | 9098 |
| B | 7,1 | 9160 | 11196 | 9 | 8276 | 10116 | 10,5 | 7443 | 9098 | |
| C | 6,5 | 7464 | 11196 | 8,3 | 6744 | 10116 | 9,6 | 6065 | 9098 | |
| D | 5,2 | 3732 | 11196 | 6,6 | 3372 | 10116 | 7,7 | 3032 | 9098 | |
| 6 | A | 12,9 | 14299 | 15805 | 16,4 | 12910 | 14269 | 19,1 | 11606 | 12820 |
| B | 12,3 | 12931 | 15805 | 15,7 | 11674 | 14269 | 18,2 | 10495 | 12820 | |
| C | 11,3 | 10536 | 15805 | 14,4 | 9512 | 14269 | 16,7 | 8552 | 12820 | |
| D | 9 | 5268 | 15805 | 11,5 | 4756 | 14269 | 13,3 | 4276 | 12820 | |
| 8 | A | 31 | 26223 | 28984 | 40 | 23702 | 26198 | 46 | 21320 | 23565 |
| B | 29 | 23714 | 28984 | 38 | 21434 | 26198 | 44 | 19280 | 23565 | |
| C | 27 | 19322 | 28984 | 35 | 17465 | 26198 | 40 | 15710 | 23565 | |
| D | 21 | 9661 | 28984 | 28 | 8732 | 26198 | 32 | 7855 | 23565 | |
| 10 | A | 61 | 41734 | 46128 | 79 | 37750 | 41724 | 92 | 33966 | 37542 |
| B | 59 | 37741 | 46128 | 75 | 34137 | 41724 | 88 | 30716 | 37542 | |
| C | 54 | 30752 | 46128 | 69 | 27816 | 41724 | 80 | 25028 | 37542 | |
| D | 43 | 15376 | 46128 | 55 | 13908 | 41724 | 64 | 12514 | 37542 | |
| 12 | A | 106 | 60832 | 67236 | 136 | 55050 | 60845 | 159 | 49544 | 54760 |
| B | 101 | 55011 | 67236 | 130 | 49782 | 60845 | 152 | 44803 | 54760 | |
| C | 93 | 44824 | 67236 | 119 | 40563 | 60845 | 139 | 36506 | 54760 | |
| D | 74 | 22412 | 67236 | 95 | 20281 | 60845 | 111 | 18253 | 54760 | |
| 14 | A | 170 | 83517 | 92309 | 219 | 75604 | 83563 | 255 | 68054 | 75218 |
| B | 162 | 75525 | 92309 | 209 | 68369 | 83563 | 243 | 61542 | 75218 | |
| C | 149 | 61539 | 92309 | 191 | 55708 | 83563 | 223 | 50145 | 75218 | |
| D | 119 | 30769 | 92309 | 153 | 27854 | 83563 | 178 | 25072 | 75218 | |
| 16 | A | 263 | 114776 | 126858 | 341 | 104119 | 115079 | 399 | 93818 | 103694 |
| B | 251 | 103792 | 126858 | 325 | 94155 | 115079 | 381 | 84840 | 103694 | |
| C | 230 | 84572 | 126858 | 298 | 76719 | 115079 | 349 | 69129 | 103694 | |
| D | 184 | 42286 | 126858 | 238 | 38359 | 115079 | 279 | 34564 | 103694 | |
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