強度区分12.9 ボルト締付トルク表
強度区分12.9のボルト(M1.6〜M64)の締付トルクと締付軸力です。たとえばM8 12.9のボルトは、乾燥状態で約44.8 N·m (33.1 ft·lb)が必要です。
ISO規格で最も高い強度区分で、主に六角穴付きボルトに用いられます。非常に強い反面、延性が低く、水素脆化に敏感です。
- 規格
- メートル(ISO 898-1)
- 使用した降伏点
- 1080 MPa (157 ksi)
- 引張強さ
- 1200 MPa (174 ksi)
- 対象サイズ
- M1.6 – M64
| サイズ | ねじピッチ | 締付軸力軸力 | 乾燥μ 0.15 | 油潤滑μ 0.11 | PTFE・モリブデンペーストμ 0.06 |
|---|---|---|---|---|---|
| M1.6 | M1.6×0.350.35 mm | 0.96 kN216 lbf | 0.34 N·m0.25 ft·lb | 0.26 N·m0.19 ft·lb | 0.18 N·m0.13 ft·lb |
| M2 | M2×0.40.4 mm | 1.57 kN352 lbf | 0.70 N·m0.52 ft·lb | 0.53 N·m0.39 ft·lb | 0.36 N·m0.27 ft·lb |
| M2.5 | M2.5×0.450.45 mm | 2.56 kN576 lbf | 1.41 N·m1.04 ft·lb | 1.06 N·m0.78 ft·lb | 0.71 N·m0.53 ft·lb |
| M3 | M3×0.50.5 mm | 3.80 kN855 lbf | 2.41 N·m1.78 ft·lb | 1.81 N·m1.34 ft·lb | 1.22 N·m0.90 ft·lb |
| M3.5 | M3.5×0.60.6 mm | 5.12 kN1151 lbf | 3.71 N·m2.74 ft·lb | 2.80 N·m2.06 ft·lb | 1.88 N·m1.39 ft·lb |
| M4 | M4×0.70.7 mm | 6.64 kN1492 lbf | 5.55 N·m4.09 ft·lb | 4.18 N·m3.09 ft·lb | 2.82 N·m2.08 ft·lb |
| M5 | M5×0.80.8 mm | 10.7 kN2410 lbf | 10.8 N·m7.95 ft·lb | 8.11 N·m5.98 ft·lb | 5.43 N·m4.01 ft·lb |
| M6 | M6×11 mm | 15.2 kN3420 lbf | 18.6 N·m13.7 ft·lb | 14.0 N·m10.4 ft·lb | 9.43 N·m6.96 ft·lb |
| M7 | M7×11 mm | 21.8 kN4905 lbf | 30.2 N·m22.3 ft·lb | 22.6 N·m16.7 ft·lb | 15.0 N·m11.1 ft·lb |
| M8 | M8×1.251.25 mm | 27.7 kN6222 lbf | 44.8 N·m33.1 ft·lb | 33.7 N·m24.8 ft·lb | 22.5 N·m16.6 ft·lb |
| M10 | M10×1.51.5 mm | 43.8 kN9856 lbf | 87.7 N·m64.7 ft·lb | 65.8 N·m48.5 ft·lb | 43.8 N·m32.3 ft·lb |
| M12 | M12×1.751.75 mm | 63.7 kN14322 lbf | 150.5 N·m111.0 ft·lb | 112.8 N·m83.2 ft·lb | 75.1 N·m55.4 ft·lb |
| M14 | M14×22 mm | 87.3 kN19620 lbf | 239.3 N·m176.5 ft·lb | 179.2 N·m132.2 ft·lb | 119.2 N·m87.9 ft·lb |
| M16 | M16×22 mm | 118.4 kN26627 lbf | 366.7 N·m270.4 ft·lb | 273.3 N·m201.5 ft·lb | 179.9 N·m132.7 ft·lb |
| M18 | M18×2.52.5 mm | 145.5 kN32712 lbf | 512.2 N·m377.8 ft·lb | 383.3 N·m282.7 ft·lb | 254.3 N·m187.5 ft·lb |
| M20 | M20×2.52.5 mm | 185.1 kN41604 lbf | 717.0 N·m528.8 ft·lb | 534.3 N·m394.1 ft·lb | 351.7 N·m259.4 ft·lb |
| M22 | M22×2.52.5 mm | 229.4 kN51564 lbf | 978.2 N·m721.5 ft·lb | 726.4 N·m535.8 ft·lb | 474.5 N·m350.0 ft·lb |
| M24 | M24×33 mm | 266.5 kN59910 lbf | 1235.0 N·m910.9 ft·lb | 920.5 N·m678.9 ft·lb | 606.0 N·m447.0 ft·lb |
| M27 | M27×33 mm | 347.3 kN78079 lbf | 1813.1 N·m1337.3 ft·lb | 1345.4 N·m992.3 ft·lb | 877.6 N·m647.3 ft·lb |
| M30 | M30×3.53.5 mm | 423.8 kN95275 lbf | 2467.3 N·m1819.8 ft·lb | 1833.8 N·m1352.6 ft·lb | 1200.3 N·m885.3 ft·lb |
| M33 | M33×3.53.5 mm | 524.3 kN117873 lbf | 3321.3 N·m2449.7 ft·lb | 2461.2 N·m1815.3 ft·lb | 1601.0 N·m1180.9 ft·lb |
| M36 | M36×44 mm | 617.4 kN138806 lbf | 4282.6 N·m3158.6 ft·lb | 3178.2 N·m2344.1 ft·lb | 2073.8 N·m1529.6 ft·lb |
| M39 | M39×44 mm | 737.7 kN165834 lbf | 5521.6 N·m4072.5 ft·lb | 4087.1 N·m3014.5 ft·lb | 2652.6 N·m1956.4 ft·lb |
| M42 | M42×4.54.5 mm | 847.4 kN190505 lbf | 6852.8 N·m5054.3 ft·lb | 5079.3 N·m3746.3 ft·lb | 3305.8 N·m2438.2 ft·lb |
| M45 | M45×4.54.5 mm | 987.3 kN221962 lbf | 8526.6 N·m6288.9 ft·lb | 6306.2 N·m4651.2 ft·lb | 4085.9 N·m3013.6 ft·lb |
| M48 | M48×55 mm | 1113.7 kN250370 lbf | 10328.7 N·m7618.1 ft·lb | 7647.5 N·m5640.5 ft·lb | 4966.4 N·m3663.0 ft·lb |
| M52 | M52×55 mm | 1328.9 kN298753 lbf | 13216.6 N·m9748.1 ft·lb | 9763.9 N·m7201.5 ft·lb | 6311.2 N·m4654.9 ft·lb |
| M56 | M56×5.55.5 mm | 1534.7 kN345012 lbf | 16486.0 N·m12159.5 ft·lb | 12186.2 N·m8988.1 ft·lb | 7886.3 N·m5816.6 ft·lb |
| M60 | M60×5.55.5 mm | 1785.7 kN401438 lbf | 20380.6 N·m15032.0 ft·lb | 15037.1 N·m11090.8 ft·lb | 9693.6 N·m7149.6 ft·lb |
| M64 | M64×66 mm | 2023.0 kN454796 lbf | 24553.1 N·m18109.5 ft·lb | 18129.5 N·m13371.7 ft·lb | 11706.0 N·m8633.9 ft·lb |
| サイズ | ねじピッチ | 締付軸力軸力 | 乾燥μ 0.15 | 油潤滑μ 0.11 | PTFE・モリブデンペーストμ 0.06 |
|---|---|---|---|---|---|
| M1.6 | M1.6×0.20.2 mm | 1.18 kN266 lbf | 0.40 N·m0.30 ft·lb | 0.30 N·m0.22 ft·lb | 0.20 N·m0.14 ft·lb |
| M2 | M2×0.250.25 mm | 1.85 kN416 lbf | 0.80 N·m0.59 ft·lb | 0.59 N·m0.44 ft·lb | 0.39 N·m0.29 ft·lb |
| M2.5 | M2.5×0.350.35 mm | 2.80 kN630 lbf | 1.51 N·m1.11 ft·lb | 1.13 N·m0.83 ft·lb | 0.74 N·m0.55 ft·lb |
| M3 | M3×0.350.35 mm | 4.24 kN953 lbf | 2.62 N·m1.93 ft·lb | 1.95 N·m1.43 ft·lb | 1.27 N·m0.93 ft·lb |
| M3.5 | M3.5×0.350.35 mm | 5.97 kN1343 lbf | 4.17 N·m3.08 ft·lb | 3.08 N·m2.27 ft·lb | 1.99 N·m1.47 ft·lb |
| M4 | M4×0.50.5 mm | 7.40 kN1664 lbf | 6.03 N·m4.45 ft·lb | 4.49 N·m3.31 ft·lb | 2.94 N·m2.17 ft·lb |
| M5 | M5×0.50.5 mm | 12.2 kN2740 lbf | 11.9 N·m8.76 ft·lb | 8.78 N·m6.47 ft·lb | 5.68 N·m4.19 ft·lb |
| M6 | M6×0.750.75 mm | 16.7 kN3744 lbf | 20.0 N·m14.7 ft·lb | 14.9 N·m11.0 ft·lb | 9.76 N·m7.20 ft·lb |
| M7 | M7×0.750.75 mm | 23.5 kN5292 lbf | 32.0 N·m23.6 ft·lb | 23.7 N·m17.5 ft·lb | 15.4 N·m11.4 ft·lb |
| M8 | M8×11 mm | 29.6 kN6657 lbf | 47.2 N·m34.8 ft·lb | 35.1 N·m25.9 ft·lb | 23.1 N·m17.0 ft·lb |
| M10 | M10×1.251.25 mm | 46.3 kN10401 lbf | 91.3 N·m67.4 ft·lb | 68.0 N·m50.2 ft·lb | 44.7 N·m33.0 ft·lb |
| M12 | M12×1.51.5 mm | 66.6 kN14977 lbf | 155.6 N·m114.8 ft·lb | 115.9 N·m85.5 ft·lb | 76.3 N·m56.3 ft·lb |
| M14 | M14×1.51.5 mm | 94.2 kN21167 lbf | 253.2 N·m186.8 ft·lb | 187.7 N·m138.4 ft·lb | 122.2 N·m90.1 ft·lb |
| M16 | M16×1.51.5 mm | 126.4 kN28425 lbf | 384.8 N·m283.8 ft·lb | 284.1 N·m209.5 ft·lb | 183.4 N·m135.3 ft·lb |
| M18 | M18×1.51.5 mm | 163.5 kN36750 lbf | 558.4 N·m411.8 ft·lb | 410.9 N·m303.1 ft·lb | 263.4 N·m194.3 ft·lb |
| M20 | M20×1.51.5 mm | 205.3 kN46143 lbf | 773.7 N·m570.7 ft·lb | 567.9 N·m418.9 ft·lb | 362.1 N·m267.1 ft·lb |
| M22 | M22×1.51.5 mm | 251.8 kN56605 lbf | 1047.5 N·m772.6 ft·lb | 767.1 N·m565.8 ft·lb | 486.7 N·m358.9 ft·lb |
| M24 | M24×22 mm | 290.6 kN65334 lbf | 1316.4 N·m970.9 ft·lb | 968.9 N·m714.6 ft·lb | 621.3 N·m458.2 ft·lb |
| M27 | M27×22 mm | 374.8 kN84254 lbf | 1917.2 N·m1414.1 ft·lb | 1406.6 N·m1037.5 ft·lb | 896.0 N·m660.9 ft·lb |
| M30 | M30×22 mm | 469.6 kN105576 lbf | 2660.4 N·m1962.2 ft·lb | 1947.3 N·m1436.2 ft·lb | 1234.2 N·m910.3 ft·lb |
| M33 | M33×22 mm | 575.2 kN129302 lbf | 3553.0 N·m2620.6 ft·lb | 2595.9 N·m1914.7 ft·lb | 1638.8 N·m1208.7 ft·lb |
| M36 | M36×33 mm | 653.9 kN147001 lbf | 4466.9 N·m3294.6 ft·lb | 3287.1 N·m2424.4 ft·lb | 2107.2 N·m1554.2 ft·lb |
| M39 | M39×33 mm | 777.5 kN174780 lbf | 5738.1 N·m4232.2 ft·lb | 4213.9 N·m3108.0 ft·lb | 2689.8 N·m1983.9 ft·lb |
| M42 | M42×33 mm | 911.7 kN204962 lbf | 7229.7 N·m5332.3 ft·lb | 5300.1 N·m3909.2 ft·lb | 3370.6 N·m2486.0 ft·lb |
| M45 | M45×33 mm | 1056.7 kN237547 lbf | 8959.4 N·m6608.1 ft·lb | 6558.2 N·m4837.1 ft·lb | 4157.0 N·m3066.1 ft·lb |
| M48 | M48×33 mm | 1212.3 kN272535 lbf | 10989.3 N·m8105.3 ft·lb | 8032.7 N·m5924.6 ft·lb | 5076.0 N·m3743.9 ft·lb |
| M52 | M52×44 mm | 1382.2 kN310720 lbf | 13601.3 N·m10031.8 ft·lb | 9988.6 N·m7367.2 ft·lb | 6375.9 N·m4702.6 ft·lb |
| M56 | M56×44 mm | 1620.8 kN364377 lbf | 17156.8 N·m12654.2 ft·lb | 12577.4 N·m9276.6 ft·lb | 7998.0 N·m5899.0 ft·lb |
| M60 | M60×44 mm | 1878.5 kN422306 lbf | 21145.1 N·m15595.8 ft·lb | 15479.5 N·m11417.1 ft·lb | 9813.9 N·m7238.4 ft·lb |
| M64 | M64×44 mm | 2155.2 kN484506 lbf | 25705.9 N·m18959.7 ft·lb | 18794.9 N·m13862.4 ft·lb | 11884.0 N·m8765.2 ft·lb |
締付軸力は降伏荷重の70%です。トルクはISO 16047 / VDI 2230に基づき、標準六角頭で、ねじ面と座面に同じ摩擦係数μを用いて算出しています。サイズをクリックすると、二面幅、下穴径、計算例を確認できます。メーカー指定値がある場合は、必ずそちらに従ってください。
よくある質問
M8 12.9のボルトの締付トルクは?
乾燥状態で約44.8 N·m (33.1 ft·lb)、油潤滑で約33.7 N·m (24.8 ft·lb)です(M8×1.25、降伏荷重の70%、締付軸力27.7 kN)。
M10 12.9のボルトの締付トルクは?
乾燥状態で約87.7 N·m (64.7 ft·lb)、油潤滑で約65.8 N·m (48.5 ft·lb)です(M10×1.5、降伏荷重の70%、締付軸力43.8 kN)。
M12 12.9のボルトの締付トルクは?
乾燥状態で約150.5 N·m (111.0 ft·lb)、油潤滑で約112.8 N·m (83.2 ft·lb)です(M12×1.75、降伏荷重の70%、締付軸力63.7 kN)。