How much torque do you need from your drill?
Tightening torque is measured in Nm (Newton-meters). It defines the tightening force of a cordless drill, i.e. its ability to tighten and/or loosen screws in dense and/or compact materials, etc. For example, a cordless drill with a high torque rating can drive an 80 mm screw into oak, while a hand drill with less torque may only be able to drill up to 30 mm. In short, the higher the Nm rating, the more torque the cordless drill can apply. The tightening torque can be adjusted to tailor the tightening force to the material. This also prevents damage to screwdriver bits, sockets, and screw heads.
Mid-range cordless drills typically have a torque rating of around 55 Nm.
Entry-level models usually come with a 14.4 V - 1.2 Ah battery and offer 16 Nm, 25 Nm, or even 30 Nm.
Professional cordless drills have tightening torques of 60 Nm, 85 Nm, 100 Nm, or even 135 Nm.
When driving wood screws, pre-drill pilot holes to make driving easier and to prevent splitting of the workpiece. See the chart.
Nominal diameter of wood screw (mm) | Recommended size of pilot hole (mm) |
3.1 | 2.0 - 2.2 |
3.5 | 2.2 - 2.5 |
3.8 | 2.5 - 2.8 |
4.5 | 2.9 - 3.2 |
4.8 | 3.1 - 3.4 |
5.1 | 3.3 - 3.6 |
5.5 | 3.7 - 3.9 |
5.8 | 4.0 - 4.2 |
6.1 | 4.2 - 4.4 |
Cordless Drill Driver Kit LithiTech L901 40N.m high torque Entry-level and middle range model for drilling and screwing, is the best for various jobs. such as assembling furniture and decking, drilling plasterboard, wood (35 mm), steel (10 mm)