How to use the impact drivers

An impact driver is a tool suitable for drilling holes and tightening screws in hard surfaces. Drill drivers also do the same thing, but what is the difference between them? This article will explain the uses and applications of impact drivers and how they differ from drill drivers.

Uses of impact driver

Impact drivers have an internal hammer function, which applies an impact force as it rotates. The impact can be 2,000 to 3,000 blows per minute, and the advantage is that it can be used for drilling holes and tightening screws in hard surfaces. It can also be used for tightening 60mm course threads used in 2x4 lumber. It is also useful for wood deck building and woodworking. It is also used in construction and can be used to drive screws into interior materials.

Cordless models are commonly used, although corded models are also available. The chuck uses a one-touch chuck and does not require the use of tools. Some of them can be reversed forward and backward with infinite speed. They can handle bolts and nuts as well as screws.

Differences between impact drivers and drill drivers

Drill drivers are also tools that use rotational force to turn bits for screw tightening and drilling, but the major difference between them and impact drivers is the presence or absence of impact. Impact drivers are suitable for drilling holes in hard surfaces and are suitable for hard work. It is convenient for daily professional use and has the advantage of durability. However, drilling holes is less precise than with drill drivers, and they are not suitable for soft materials.


The difference in appearance is the chuck to which the tip tool is attached. Drill drivers attach the bit by turning the tip, while impact drivers insert the bit by pulling on the tip. Pulling the tip allows it to be inserted, and releasing the tip locks it in place.

The drill driver is also speed-controllable, with two different rotation speeds. This makes it possible to use the drill driver for either soft or hard surfaces. Torque adjustment is also possible and can be changed with a ring. Impact drivers, on the other hand, do not have a clutch function, so the depth of penetration must be adjusted by the user. One must be careful not to over-tighten screws, as over-tightening can lead to screw breakage.

Drill drivers are suitable for drilling holes, short screws, and soft materials, and are suitable for work such as assembling furniture. Impact drivers are suitable for long screws and hard materials, and are useful for large furniture and interior work.

How to use an impact driver

The main unit can be operated using the trigger, by just pulling the switch. The speed can be adjusted according to the degree of pull, when using a non-stop speed change.  First, hit the surface slowly, and then increase the speed at the end to drive straight. For materials that are prone to cracking, it is important to strike at a slower speed. Some are equipped with a light on the trigger to brighten the work area.


When driving a screw, hold the bit so that it remains in a vertical position. Hold the unit firmly and support it so it does not shake. When driving a screw, it is easier to drill it in if you create a hole beforehand.

The key to avoiding screw-tightening failures is to be careful that the bit does not come out of the screw groove. If the bit is not firmly seated in the screw head, it may come off.


Forward and reverse drill is possible by turning the switch next to the trigger. Use forward rotation for drilling and screw tightening, and forward/reverse rotation after drilling or pulling out the drill.


Impact drivers are mainly used for tightening screws and produce strong impact, which is useful for woodworking with 2x4 lumber and for interior work on houses. Understanding the correct usage and uses will help improve work efficiency.