本表给出了由碳素钢或合金钢制造的公称直径为6mm~48mm 螺栓的拧紧力矩值。本表不适用于使用尼龙垫圈、密封垫圈、非金属垫圈及特殊指定用途的螺栓。
公称 直径 mm | 螺栓性能等级 | |||||
4.8 | 5.8 | 6.8 | 8.8 | 10.9 | 12.9 | |
保证应力MPa | ||||||
310 | 380 | 440 | 600 | 830 | 970 | |
拧紧力矩N·m | ||||||
M6 | 5~6 | 7~8 | 8~9 | 10~12 | 14~17 | 17~20 |
M8 | 13~15 | 16~18 | 18~22 | 25~30 | 34~41 | 41~48 |
M8×1 | 14~17 | 17~20 | 20~23 | 27~32 | 37~43 | 43~52 |
M10 | 26~31 | 31~36 | 36~43 | 49~59 | 68~81 | 81~96 |
M10×1 | 28~34 | 35~41 | 41~48 | 55~66 | 76~90 | 90~106 |
Ml2 | 45~53 | 55~64 | 64~76 | 86~103 | 119~141 | 141~167 |
M12×1.5 | 47~56 | 57~67 | 67~79 | 90~108 | 124~147 | 147~174 |
Ml4 | 71~85 | 87~103 | 103~120 | 137~164 | 189~224 | 224~265 |
Ml4×1.5 | 77~92 | 94~110 | 110~131 | 149~179 | 206~243 | 243~289 |
M16 | 111~132 | 136~160 | 160~188 | 214~256 | 295~350 | 350~414 |
Ml6×1.5 | 118~141 | 144~170 | 170~200 | 228~273 | 314~372 | 372~441 |
M18 | 152~182 | 186~219 | 219~259 | 294~353 | 406~481 | 481~570 |
Ml8×1.5 | 171~205 | 210~247 | 247~291 | 331~397 | 457~541 | 541~641 |
M20 | 216~258 | 264~312 | 312~366 | 417~500 | 576~683 | 683~808 |
M20×1.5 | 239~287 | 294~345 | 345~407 | 463~555 | 640~758 | 758~897 |
M22 | 293~351 | 360~431 | 416~499 | 568~680 | 786~941 | 918~1099 |
M22×1.5 | 322~386 | 395~473 | 458~548 | 624~747 | 863~1034 | 1009~1208 |
M24 | 373~446 | 457~547 | 529~634 | 722~864 | 998~1195 | 1167~1397 |
M24×2 | 406~486 | 497~595 | 576~689 | 785~940 | 1086~1300 | 1269~1520 |
M27 | 546~653 | 669~801 | 774~801 | 1056~1264 | 1461~1749 | 1707~2044 |
M27×2 | 589~706 | 723~865 | 837~1002 | 1141~1366 | 1578~1890 | 1845~2208 |
M30 | 741~887 | 908~1087 | 1052~1259 | 1434~1717 | 1984~2375 | 2318~2775 |
M30×2 | 820~982 | 1005~1203 | 1164~1393 | 1587~1900 | 2196~2629 | 2566~3072 |
M36 | 1295~1550 | 1587~1900 | 1838~2200 | 2506~3000 | 3466~4150 | 4051~4850 |
M36×3 | 1371~1641 | 1680~2011 | 1946~2329 | 2653~3176 | 3670~4394 | 4289~5135 |
M42 | 2071~2479 | 2538~3039 | 2939~3519 | 4008~4798 | 5544~6637 | 6479~7757 |
M42×3 | 2228~2667 | 2731~3269 | 3162~3786 | 4312~5162 | 5965~7141 | 6921~8345 |
M48 | 3110~3723 | 3813~4564 | 4415~5285 | 6020~7207 | 8327~9969 | 9732~11651 |
M48×3 | 3387~4055 | 4152~4970 | 4807~5755 | 6556~7848 | 9069~10857 | 10598~12688 |
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