High Tensile Steel Fasteners: Recommended Tightening Torques.
The following data tables are designed to be used as general guidance when installing High Tensile Steel fasteners.
| 8.8 High Tensile Steel Fasteners | |
|---|---|
| Size of Fastener | Recommended Maximum Tightening Torque (Nm) |
| M2 | Enquire |
| M2.5 | Enquire |
| M3 | 1.37 |
| M4 | 3.1 |
| M5 | 6.15 |
| M6 | 10.5 |
| M8 | 26 |
| M10 | 51 |
| M12 | 89 |
| M14 | 141 |
| M16 | 215 |
| M18 | 295 |
| M20 | 420 |
| 10.9 High Tensile Steel Fasteners | |
|---|---|
| Size of Fastener | Recommended Maximum Tightening Torque (Nm) |
| M2 | Enquire |
| M2.5 | Enquire |
| M3 | 1.92 |
| M4 | 4.4 |
| M5 | 8.65 |
| M6 | 15 |
| M8 | 36 |
| M10 | 72 |
| M12 | 125 |
| M14 | 198 |
| M16 | 305 |
| M18 | 420 |
| M20 | 590 |
| 12.9 High Tensile Steel Fasteners | |
|---|---|
| Size of Fastener | Recommended Maximum Tightening Torque (Nm) |
| M2 | Enquire |
| M2.5 | Enquire |
| M3 | 2.3 |
| M4 | 5.25 |
| M5 | 10.4 |
| M6 | 18 |
| M8 | 43 |
| M10 | 87 |
| M12 | 150 |
| M14 | 240 |
| M16 | 365 |
| M18 | 500 |
| M20 | 710 |
Please note: The above data is based on a dry installation and should not be used for a lubricated installation. This data is based on a Metric Coarse Thread. The values stated are taken from a controlled environment and are not specific to a particular screw type - different fasteners may have different attributes which can affect the values given within this table. Accu cannot guarantee the figures given and they should be used as a guide only.