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Pre-load and Tightening torques for steel fasteners - Standard Metric Threads

M6

M8

M10

Maximum Pre-load (N) Property class to ISO898/1 Maximum Tightening Torque (Ncm) Property class to ISO898/1

Thread Coeff of f ric tion 3.6 4.6 5.6 4.8 5.8 8.8 10.9 12.9 3.6 4.6 5.6 4.8 5.8 8.8 10.9 12.9 Conv fac tor

M1.6

0.100 185 200 250 333 575 810 970 4.5 5.0 6.5 8.5 15 21 25 0.026

0.125 175 190 240 310 544 770 920 5.0 5.5 7.5 9.5 17 24 29 0.031

0.140 165 180 230 300 530 746 895 6.5 6.0 8.0 10.0 18 25 30 0.034

M1.8

0.100 220 230 295 380 680 995 1150 5.50 6.0 8.0 10.0 18.5 26.0 32.0 0.027

0.125 205 220 280 360 645 905 1090 6.5 7.0 9.5 11.5 21.0 30.0 36.0 0.033

0.140 200 215 275 350 625 880 1050 7.00 7.50 10.0 12.5 13.0 32.0 38.0 0.036

M2.0

0.100 310 335 420 540 960 1350 1620 9.5 10.5 13.5 17.0 31.0 44.0 52.0 0.032

0.125 295 320 400 520 910 1280 1530 11.5 12.0 15.5 19.0 35.0 50.0 60.0 0.039

0.140 285 305 385 500 880 1240 1490 12.0 13.0 16.5 21.5 38.0 53.0 64.0 0.043

M2.5

0.100 515 560 700 910 1600 2250 2700 20.0 21.0 28.0 36.0 63.0 89.0 107 0.040

0.125 490 530 665 860 1520 2140 2560 23.0 25.0 32.0 39.0 73.0 102 123 0.048

0.140 475 510 645 830 1470 2070 2480 25.0 27.0 34.0 43.0 78.0 109 131 0.053

M3.0

0.100 790 855 1070 1390 2440 3430 4120 35.0 38.0 49.0 63.0 111 157 188 0.046

0.125 770 815 1020 1320 2320 3270 3920 42.0 44.0 56.0 72.0 128 180 215 0.055

0.140 730 785 985 1280 2250 3170 3800 44.0 47.0 60.0 78.0 137 192 230 0.061

M3.5

0.100 1050 1140 1430 1850 3270 4600 5520 54.0 59.0 75.0 96.0 171 240 290 0.052

0.125 1000 1080 1360 1760 3120 4380 5260 63.0 68.0 86.0 110 196 275 330 0.063

0.140 970 1050 1320 1710 3020 4250 5100 67.0 73.0 92.0 119 210 295 395 0.070

M4.0

0.100 1370 1480 1850 2400 4230 5960 7140 83.0 88.0 112 144 255 360 430 0.060

0.125 1300 1400 1760 2280 4020 5660 6790 94.0 102 128 166 290 410 495 0.073

0.140 1260 1360 1710 2220 3900 5480 6580 100 108 137 177 310 440 525 0.080

M5.0

0.100 2250 2410 3020 3920 6910 9720 11650 160 170 220 280 500 705 845 0.072

0.125 2140 2300 2880 3740 6580 9260 11100 180 200 250 320 575 810 970 0.087

0.140 2000 2230 2790 3620 6380 8980 10800 190 210 270 340 615 865 1040 0.096

Maximum Pre-load (N) Property class to ISO898/1 Maximum Tightening Torque (Nm) Property class to ISO898/1

M6

0.100 3200 3400 4270 5550 9760 13700 16450 2.8 3.0 3.8 4.8 8.6 12 14.5 0.00087

0.125 3.50 3240 4060 5270 9290 13050 15650 3.2 3.4 4.3 5.6 9.9 14.0 16.5 0.00106

0.140 2960 1350 3940 5120 9010 12650 15200 3.5 3.7 4.6 6.0 10.5 15.0 18.0 0.00117

M8

0.100 58770 6260 7830 10170 17900 25200 30200 6.8 7.2 9.1 11.7 21.0 29.0 35.0 0.00115

0.125 5590 5960 7460 9690 17050 24000 28800 7.9 8.3 10.5 13.6 24.0 34.0 40.0 0.0014

0.140 5420 5780 7230 9390 16550 23200 27900 8.4 8.9 11.0 14.5 26.0 36.0 43.0 0.00145

M10

0.100 9350 9960 12450 16180 28500 40100 48100 13.5 14.4 18.0 23.4 42.0 58.0 70.0 0.00175

0.125 8900 9480 11850 15400 27100 38200 45800 15.5 16.6 21.0 27.0 48.0 67.0 81.0 0.00195

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M12

M14

M16

M18

M20

M22

M24

M27

0.140 8640 9200 11500 14900 26300 37000 44400 17.0 18.0 22.0 29.0 51.0 72.0 87.0 0.00175

M12

0.100 13600 14520 18150 23500 41500 58400 70000 24.0 25.0 31.0 41.0 72.0 101 121 0.0021

0.125 13000 13840 17300 22400 39600 55600 66800 27.0 29.0 36.0 47.0 83.0 117 140 0.0023

0.140 12600 13400 16800 21800 38400 54000 64800 29.0 31.0 39.0 50.0 89.0 125 150 0.002

M14

0.100 18700 19900 24900 32300 57000 80100 96200 37.0 40.0 50.0 47.0 114 160 193 0.0024

0.125 17800 19000 23800 30900 54300 76400 91700 43.0 46.0 58.0 74.0 132 185 220 0.0027

0.140 17300 18400 23100 3000 52700 74100 89000 46.0 50.0 62.0 81.0 141 198 240 0.0022

M16

0.100 25700 27400 34300 44500 78300 110000 132000 57.0 60.0 76.0 98.0 174 245 295 0.0027

0.125 24500 26100 32700 42500 74700 105000 126000 66.0 70.0 88.0 115 200 285 340 0.003

0.140 23800 25300 31700 41200 72600 102000 122500 71.0 76.0 95.0 124 215 305 365 0.0025

M18

0.100 31300 33300 41700 54200 95300 134000 161000 79.0 83.0 105 135 240 340 405 0.003

0.125 29800 31700 39700 51600 90900 128000 153500 91.0 95.0 121 155 275 390 470 0.0034

0.140 28900 30800 38600 50100 88200 88200 149000 97.0 105 130 171 295 420 500 0.0028

M20

0.100 40200 42800 53500 69500 122500 172000 206000 111 120 148 195 340 475 570 0.0033

0.125 38300 40800 5110 66400 117000 164000 197000 128 135 170 219 390 550 660 0.0037

0.140 37200 39600 49600 66400 113500 159000 1915000 138 146 184 238 420 590 710 0.0033

M22

0.100 50100 53400 66800 86800 153000 215000 258000 149 160 199 260 455 640 765 0.0036

0.125 47900 51000 63800 82900 146000 205000 246000 173 183 230 298 530 745 890 0.004

0.140 46500 49600 62000 80600 142000 199500 239500 186 198 250 322 570 800 960 0.0033

M24

0.100 57800 61600 77100 100200 176000 248000 297000 191 203 255 330 580 820 980 0.004

0.125 55200 58800 73600 95680 168000 236000 284000 220 235 295 382 675 950 1140 0.0044

0.140 53600 57100 71400 92800 163500 230000 276500 235 251 315 408 725 1020 1220 0.0037

M27

0.1 76000 81200 101500 131900 323000 326000 391000 280 300 375 488 855 1210 1450 0.0045

0.125 72600 77400 96800 125800 221000 311000 374000 325 348 435 566 995 1400 1680 0.005

0.14 70600 75200 94100 122300 215000 302000 363000 350 376 470 610 1070 1510 1810 0.0041

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M30

M33

M36

M39

For the Threaded Fastener calculation procedure, see VDI 2230 guidelines

Note: Due to the fact that fastening applications differ greatly, the above information is for guidance only and is correct to

the best of our knowledge. The customer must satisfy themselves with the performance of the fastener and validity of thedata. TR Fastenings will not be held responsible for any failure that may occur from the use of this information.

M30

0.1 92500 98800 123500 160500 282000 396000 475000 380 405 510 658 1160 1640 1970 0.005

0.125 88300 9400 117500 162700 269000 378000 454000 445 470 590 763 1350 1900 2280 0.0055

0.14 85700 91600 114500 148800 261000 367000 441000 475 504 635 818 1450 2050 2450 0.0045

M33

0.1 115000 122800 153500 199500 351000 949000 592000 515 552 690 898 1570 2210 2650 0.0055

0.125 110000 117200 146500 190400 335000 472000 566000 600 645 800 1045 1830 2580 3090 0.006

0.14 107000 114000 142500 185200 326000 458000 550000 645 685 865 1110 1970 2770 3330 0.0049

M36

0.1 135000 144000 180000 234000 412000 579000 695000 665 705 885 1145 2030 2850 3420 0.006

0.125 129000 137600 172000 223600 394000 553000 664000 775 825 1030 1340 2360 3310 3980 0.0066

0.14 125500 134000 167500 217700 382000 538000 645000 830 885 1111 1435 2530 3560 4280 0.0053

M39

0.1 162500 173500 217000 282100 495000 696000 835000 860 920 1150 1495 2620 3680 4420 0.0053

0.125 155000 165600 207000 269100 473000 665000 798000 1000 1075 1340 1750 3050 4290 5150 0.0065

0.14 151000 160800 201000 261300 460000 646000 776000 1080 1155 1440 1880 3290 4620 5550 0.0072