00-10
STANDARD TIGHTENING TORQUES FOR NUTS AND
BOLTS
The tightening torques for certain specific components and special tightening methods are indicated in the
relative assembly paragraphs.
★
The tightening torques indicated below refer to bolts and nuts assembled without lubrication and, where ap-
plicable, with anaerobic threadlocking compound.
The values apply to tightening on steel or cast iron components; for soft materials such as aluminium, copper,
plastic, sheet metal or panels, the indicated tightening torques must be reduced by 50%
.
BOLT SIZE
BOLT CLASS
8.8 10.9 12.9
Nm lb.ft. Nm lb.ft. Nm lb.ft.
COARSE THREAD
M6x1
8.0 – 8.8 5.9 – 6.5 11.8 – 13.0 8.7 – 9.6 13.8 – 15.2 10.2 – 11.2
M8x1.25
19.4 – 21.4 14.3 – 15.8 28.5 – 31.5 21.0 – 23.2 33.3 – 36.9 24.5 – 27.2
M10x1.5
38.4 – 42.4 28.3 – 31.2 56.4 – 62.4 41.6 – 46.0 67.4 – 74.4 49.7 – 54.8
M12x1.75
66.5 – 73.5 49.0 – 54.2 96.9 – 107 71.4 – 78.9 115 – 128 84.8 – 94.3
M14x2
106 – 117 78.1 – 86.2 156 – 172 115.0 – 126.8 184 – 204 135.6 – 150.3
M16x2
164 – 182 120.9 – 134.1 241 – 267 117.6 – 196.8 282 – 312 207.8 – 229.9
M18x2.5
228 – 252 168.0 – 185.7 334 – 370 246.2 – 272.7 391 – 432 288.2 – 318.4
M20x2.5
321 – 355 236.6 – 261.6 472 – 522 347.9 – 384.7 553 – 611 407.6 – 450.3
M22x2.5
441 – 487 325.0 – 358.9 647 – 715 476.8 – 527.0 751 – 830 553.5 – 611.7
M24x3
553 – 611 407.6 – 450.3 812 – 898 598.4 – 661.8 950 – 1050 700.2 – 773.9
M27x3
816 – 902 601.4 – 664.8 1198 – 1324 882.9 – 975.8 1419 – 1569
1045.8 – 1156.4
FINE THREAD
M8x1
20.8 – 23.0 15.3 – 17.0 30.6 – 33.8 22.6 – 24.9 35.8 – 39.6 26.4 – 29.2
M10x1.25
40.6 – 44.8 29.9 – 33.0 59.7 – 65.9 44.0 – 48.6 71.2 – 78.6 52.5 – 57.9
M12x1.25
72.2 – 79.8 53.2 – 58.8 106 – 118 78.1 – 87.0 126 – 140 92.9 – 103.2
M12x1.5
69.4 – 76.7 51.1 – 56.5 102 – 112 75.2 – 82.5 121 – 134 89.2 – 98.8
M14x1.5
114 – 126 84.0 – 92.9 168 – 186 123.8 – 137.1 199 – 220 146.7 – 162.1
M16x1.5
175 – 194 129 – 143 257 – 285 189.4 – 210.0 301 – 333 221.8 – 245.4
M18x1.5
256 – 282 188.7 – 207.8 375 – 415 276.4 – 305.9 439 – 485 323.5 – 357.4
M20x1.5
355 – 393 261.6 – 289.6 523 – 578 385.5 – 426.0 611 – 676 450.3 – 498.2
M22x1.5
482 – 532 355.2 – 392.1 708 – 782 521.8 – 576.3 821 – 908 605.1 – 669.2
M24x2
602 – 666 443.7 – 490.8 884 – 978 651.5 – 720.8 1035 – 1143 762.8 – 842.4
STANDARD TIGHTENING TORQUES FOR NUTS AND BOLTS
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