7.1 Standard torques
7.1.1 Standard torques for screw connections
For hex screws in accordance with:
– ISO 4014
– ISO 4017
– ISO 8765
– ISO 8676
For socket head screws in accordance with: ISO 4762.
For hexalobular internal screws (Torx screws) in accordance with: DIN 34800.
Values for a mean friction coefficient of µ = 0.12.
Standard
thread
Nm ft lb Nm ft lb Nm ft lb
8.8 10.9 12.9
M 4 3 2.2 4 3 5 3.7
M 5 6 4.4 8 6 10 7.4
M 6 10 7.4 14 10 17 12
M 7 16 12 23 17 27 20
M 8 23 17 34 25 40 29
M 10 46 34 68 50 79 58
M 12 79 58 117 86 135 100
M 14 125 92 185 140 215 160
M 16 195 140 280 210 330 240
M 18 280 210 390 290 460 340
M 20 390 290 560 410 650 480
M 22 530 390 750 550 880 650
M 24 670 490 960 710 1120 830
M 27 1000 740 1400 1030 1650 1220
M 30 1350 1000 1900 1400 2250 1660
M 33 1850 1360 2600 1920 3000 2210
M 36 2350 1730 3300 2430 3900 2880
M 39 3000 2210 4300 3170 5100 3770
Tab. 34
Fine thread Nm ft lb Nm ft lb Nm ft lb
8.8 10.9 12.9
M 8 x 1 25 18 36 27 43 32
M 9 x 1 36 27 53 39 62 46
KD27V12 33521029401_3_1 en 2017-07-01
© 2017 by Kohler Co. All rights reserved.
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