How to Buy An Power Screwdriver & Its Bits

A screw driver is probably the most common tool that can be found almost in every house. It is a device to turn the screw, manually or powered. A screw driver comprises a handle, a shaft usually made of toughened steel for strength with a hardened tip for inserting it into the screw head. The tips usually classify screwdrivers as those are shaped corresponding to screw head – slots, grooves, recesses, etc. Some screwdrivers come with interchangeable tips with shaft fitting into the slot cut in the handle.

Screwdriver Bits

A screwdriver bit is a device for turning screws. It is an extended fitting that very well adjust with most of the power drilling tools. Like all screws, they also have a head with a dented profile which matches an appropriate screwdriver tip can be employed in it in such a fashion that on the application of enough torque by manual/power screwdriver it will cause the screw to turn.


Each screwdriver bits have what is known as a quater-inch hex shank, and can fit into any drill with either a keyed, keyless or quarter (6.35mm) hex drive chuck.

There are three types of screwdriver bits available:
– Insert Bits
– Power Bits
– Double Ended Bits

A electric screwdriver offers you better control than a manual screwdriver. Not only electric screwdrivers are more powerful but can do a job more quickly and efficiently. They save time and efforts when need demands driving in a lot of screws. An electric screwdriver is indeed a versatile tool that helps you perform effortlessly for demanding DIY jobs. Electric screwdrivers draw power from the mains and traditionally known as corded screwdrivers. Cordless screwdrivers are battery operated and offer freedom from tethered cable for more flexibility and accessibility to tight working space.

Some key features that are taken into consideration while deciding to buy an electric screwdriver are:

Nature of Job

If you require a screwdriver for light tasks, traditional electric screwdriver is good enough, but for tougher jobs, you may need electric motors with higher outputs.
Corded or Cordless: Main-powered screwdrivers are more powerful than their cordless counterparts and are quite handy as corded screwdrivers carry rechargeable batteries which are a bit heavy.

RPM of Motor

The revolution per minute or rpm denotes the speed with which your electric screw driver will turn. The higher is the rpm; the greater is the speed of your motor. Motors with varying speed control offer you more control.

Torque Variation

The torque is a measure of rotating force. With greater torque, one can handle bigger screws as those require more force. The control over torque helps to fix a screw heads flush with the surface.

Option of Drill Driver

A tool that can drill and drives screws is more preferable. The screwdriver bits and drill bits fit the Drill Driver to perform the function of two different tools saving money in the long run. A cordless Drill Driver is understood to be the most popular portable tool so far. They come with a slip clutch to adjust torque needed for the precise screw driving.

Choice of Impact Drivers

An Impact Driver is designed to perform the bit rotation and offering concussive blows simultaneously. The synergy of these two delivers more torque to drive long, bigger screws. Since the torque is directed to the screw and not to the wrist, Impact Drivers are easier to handle.

Spindle Lock

Some electric screwdrivers come with a locking mechanism to allow the tool to perform manually.


Handles are essential from the angle of performing tougher jobs. The rubberized or soft handle is good for the grip. Handles made of hard material are not very comfortable for working with sweaty hands.

A large variety of electric screwdrivers are available in a wide price range. An electric screwdriver should be selected as per your precise need, should be reliable and offers you the value of money. Electric screwdrivers, however, need proper care and timely servicing for longer life.

What You Need To Know To Be An Expert On Screwdriver Bits

Screws and screwdriver bits can be found everywhere, and lots of us take them for granted presuming it’s too simple to concern yourself with, however there’s more on their behalf than most would assume. Ideas have compiled a few recommendations which will help familiarize you while using more complicated info on screws and bits, and hopefully increase your efficiency in utilizing them.



You can’t fasten screws efficiently once the screwdriver bits don’t precisely match your brain. Provided it’s the right dimension for your screw’s recess, just a little continuously drive effectively unless of course obviously the power used to the screw is not straight while using shank. In this case, the screwdriver bits don’t make solid and finished contact and can result in ‘cam out’. This is often a process by which the screwdriver slips in the mind from the screw since the torque turning the screw exceeds a particular quantity.

‘Cam out’ may also happen wherever the task required to pressure the screw to the wood is much more compared to torque utilized making it switch. The finish result in scenario is injury to the screw recess as well as the small bit inside the worst situation, a lot of torque placed on a screw that’s unwilling to switch will shear in the mind.


The Most Frequent Screw  Types

A Slot was the conventional type of method of driving screws after they were initially developed that is little used today apart from brass countersunk screws. When working with slotted screws and bits the finish in the driving bit ought to be an exact easily fit into the slot to enable them to turn correctly an ill-fitting bit could cause instant injury to the screw mind.

Philips screwdriver bits utilize a ‘star’ created recess inside the mind. They were created for that vehicle industry within the u . s . states noisy . part of the last century and therefore are produced to become coupled with a specific torque before ‘cam out’ occurs. Consequently the screw can not be over tightened.

The Pozidrive can be a modification in the Philips mind which is in keeping used in workshops trade, industry as well as the home. You’ll be able to apply greater torque for the screw mind before ‘cam out’ occurs.

Torx bits feature another ‘star’ created recess, but here the driving lands within the mind, parallel for the shank as well as the drill driver consequently the torque can be used better. Consequently ‘cam out’ is less inclined to occur however a downside of the torx product is it might be much easier to operate a vehicle the screw an excessive amount of to the wood.


A Useful Accessory – The Magnetic Bit Holder

The magnetic bit holder is certainly a vital accompaniment towards the drill driver. Another finish includes a stainless-steel cylinder into which any screwdriver bit will slot. Just a little magnet also prevents the part from shedding out. An additional benefit in the bit holder is always that standard steel screws (not stainless) may also be magnetized and may ‘stick’ for the finish in the bit a component that’s particularly useful when used in limited spaces.

Magnetic holders and screwdriver items of all are available in various lengths, meaning that can be used alternative combinations for a number of applications. A screwdriver can also be created by fitting just a little holder in to a switched wooden handle. This affords additional control when you wish to operate a vehicle delicate brass slot screws precisely.


Pro Technique Pilot & Clearance Holes

When working with much denser timbers, for instance Oak, Beech or Sugar Walnut, driving the screws will get to become harder. There’s an opportunity the screw mind may shear unless of course obviously you drill pilot and clearance holes.

A screw functions a wedge when driven into timber, forcing the fibres apart, that could have undesirable effects sometimes. Using modern screws in pine as well as other easily labored timbers, this isn’t too problematic.

However, driving a big screw near the finish from the board could make it split. The remedy is always to drill an plane pilot or clearance hole which relieves the lateral pressure round the wood fibres when you drive the screw.

Pilot Hole

A hole drilled to uncover and move the screw allowing the threads to grip the wood. For example, a 4mm screw should have a few.5mm pilot hole.

Clearance Hole

A hole drilled allowing the screw shank, like the thread, to give the wood. Thus a 4mm screw requires a 4.5mm clearance hole.

Screwing sheets of plasterboard with a wall requires special screws that drive exactly therefore the leading in the countersunk thoughts are degree with the top of the board. Experts on-site use drywall screwdrivers but wherever you’re only employing a couple of screws a simple drywall screw adapter or depth adjustable small bit holder ensures they are produced the best depth.



Utilizing screwdriver bits and screws can be a commonplace activity you can forget that there’s a massive quantity of testing and development that goes into their manufacture. We hope that these straightforward guidelines can help you ensure that their use is difficulty free, with the well timed avoidance of a screw head shearing off.