While most screwdrivers are manually operated, there are some models that have an internal motor to drive the screws.

Keep a multi-bit screwdriver around the home to tackle a wide variety of repairs and minor projects. This can happen if the screwdriver is misaligned in the screw head slot, but can also be caused when the amount of torque applied to the screw head exceeds a specific limit. A hex screwdriver is designed to remove or drive fasteners with a hexagonal notch, like the screws that are commonly found in many furniture products. Often referred to as a square-drive screwdriver, Robertson screwdrivers are capable of driving screws and fasteners with a square-shaped notch at a higher torque than most other screwdrivers.While Phillips screwdrivers do provide better control and driving power, the tip can still slip out of the screw head if it is driven with too much force. This is because the square-shaped screwdriver bit grips the sides of the notch without slipping, even as the speed and torque are increased. The six-sided shape of the hexagon reduces the chance of slipping, allowing hex fasteners to be driven at high speeds by electric-power hex screwdrivers or drills without the screwdriver head stripping the screw notch. Most products have a switch that can be used to reverse the direction of the ratcheting mechanism, so you aren't limited to just tightening fasteners, you can also loosen them. An offset screwdriver is a Z-shaped tool with screwdriver heads on each end and a horizontal metal handle in between.

This type of screwdriver works like a ratchet in that it spins freely in one direction and grips the screw or fastener when turned in the opposite direction. Go slow to ensure that the screwdriver tip grips the screw properly to avoid stripping the screw head. Common differences between the various types include the handle, shaft, and tip (or head) of the screwdriver, as well as the power used to drive the screws. Offset screwdrivers can come in various sizes and lengths, as well as different screwdriver heads, like Phillips or flathead. It is a simple object used for driving screws or removing screws, and consists of a handle, shaft, and tip or head that fits into the compatible screw notch or slot.

You can also use precision screwdrivers when working with computers, monitors, and other electronics. Electric screwdrivers can be used with various exchangeable bits in a variety of sizes and types, including slotted, Phillips, Robertson, Torx, and even Hex. Generally, precision screwdriver heads are flathead or Phillips head, though you may also find Torx precision screwdrivers.