Recommended torque settings can be found in the table below. These values apply to oiled screws.
When using grease containing MoS2, the required torque can be reduced to half of the values below.
Strength Class 8.8
| Size | Maximum Tightening Torque (Ncm)* | |
|---|---|---|
| Fixing Screw DIN 912 | Fine-Shaft Fixing Screw, Type GD or GDN | |
| M2 | 35 | – |
| M2.5 | 73 | 54 |
| M3 | 128 | 94 |
| M4 | 290 | 221 |
| M5 | 575 | 463 |
| M6 | 990 | 762 |
| M8 | 2400 | 1838 |
| M10 | 4800 | 3840 |
| M12 | 8300 | 6579 |
| M14 | 13200 | 10631 |
| M16 | 20000 | – |
* Applicable to oiled screws
Note: To improve fracture resistance in case of moving axis collisions, linear guideways should use screws of strength class 12.9 according to ISO 898-1 whenever possible. However, screws of strength classes 8.8 to 12.9 can generally be used.