Types and classes of screwdrivers

Star, flat, hex, and even square, these are all the types of screwdriver classes you can find and how you should use each one to tighten or remove the right screws. Do you want to know everything about these useful tools? Keep reading.

It does not matter the different types of screwdrivers that exist, they all serve the same purpose, insert and remove screws. And it is that even if you do not believe it, there are as many kinds of screwdrivers as there are screw heads . And no, using a flat screwdriver to remove a star screw is not recommended (although we have all done it at some point). So take that screw that resists you and take note of the types of screwdrivers that we are going to teach you, perhaps one of them is just the one you need. Know more about oglasi crna gora.

And what if you need to remove a screw, but you don’t have the right screwdriver ? Don’t worry, for that we also have a most sustainable solution. We are talking, of course, about second-hand screwdrivers or even a set of second-hand screwdrivers if we want to have all types at once.

types of screwdrivers

Most of the different types of screwdrivers are usually determined by the shape of their tip, associated with a particular type of screw head. However, we can find different types of screwdrivers with the same tip and different uses depending on their size or even the material that covers them. Although these rarer screwdrivers will be covered later, for now, these are the most common types of screwdrivers.

star screwdrivers

The most common type of screwdriver that cannot be missing in any drawer, also known as Phillips, are used to tighten or loosen cross-head screws . These screwdrivers allow greater force and precision to be exerted when tightening any screw and were invented in the 19th century by Henry Phillips with the aim of introducing electric screwdrivers to most industries.

A curiosity of this type of screwdriver is that if we look closely, we can see how its head has a slight cam effect. But this is not a defect, this apparent defect is intended to prevent the torque force from exceeding the resistance limit of the screwdriver while tightening the screw. Which resists the damage of the screwdriver and screw profile and clearly extends the life of the tool.

flat screwdrivers

The other type of screwdriver that can not be missing in any house is the flat head or slotted screwdriver. Its flattened tip is unmistakable and is used for screws with a straight linear intrusion through the head. A curious fact about this type of screwdriver is its origin, one of the oldest, invented in the fifteenth century in Europe.

Like star screwdrivers, flat screwdrivers also have a cam effect that makes the head tend to detach from the head of the screw when the force applied to tighten exceeds a certain limit. Thus preventing both the screw head and the screwdriver from being damaged.

Pozidriv Screwdrivers

They can look a lot like Phillips screwdrivers, and in essence, Pozidriv screwdrivers are an improved version of the Philips. Designed to reduce the camming effect that we have already told you about, this type of screwdriver has two cross signs that are offset at 45-degree angles on its head.

This type of screwdriver is more common in Europe and by limiting the cam effect, it provides greater resistance to sliding and offers more stability than the Phillip profile, so it is used for times when the screw is required to be well tightened. .

torx screwdrivers

Also known as round six-point head screwdrivers, Torx screwdrivers exist for the sole purpose of tightening screws that need to be tightened even more than star screws.

Often used in the mechanical industry by automotive technicians, this class of screwdrivers allow screws to be tightened with low radial force, which increases the life of the screw and the tip of the screwdriver. Unlike Phillips or Pozidriv screwdrivers, a much higher torque can be transferred with the same amount of force with no chance of the tool slipping.

Torx drivers are available in various sizes and use a number system to determine the tip size, such as T8, T10, T15, T25, etc. As the number increases, the size of the tool tip increases.

hex screwdrivers

Surely you have heard of Allen keys, used to loosen or tighten large hexagonal screws. Well, you should know (and more so if you have assembled Ikea furniture) that there are hexagonal screwdrivers that are used for the same thing. What in this case the screw will be the one with the hole and not the other way around as with an Allen key.

This type of screwdriver has six straight lobes in the shape of a hexagon, preventing any kind of sliding or cam effect while turning any screw. Which is great for when you have to tighten many screws quickly and safely.

square screwdrivers

This class of screwdrivers should not be merged with the hexagonal type, essentially since its square tip is missing two more sides to be of the Allen type. Invented by a Canadian and very common in the United States, these types of screwdrivers are also known as Robertson screwdrivers , in honor of their inventor.

This is another one of those screws that prevents the cam effect when turning, thus improving centering. In addition, the slight taper at the front of the screwdriver provides good locking with the screw and thus makes it more comfortable to use. These types of screwdrivers were first used by the Ford Motor Company , as these screwdrivers speed production, reduce damage, and are very reliable.

Other kinds of screwdrivers

We’re not done yet! Although you already know the most common types of screwdrivers, we still have a few more classes left. A little more special and concrete , it will be good for you to know them for when you are presented with a more special screw.

Tri-point screwdrivers

These types of screwdrivers are very unusual in that the screws you will turn with them are usually extremely small. So much so that they are mostly used to disassemble technological devices such as consoles, mobile phones and cameras . Their little tri-edged tips are quite small and the screwdrivers themselves are also very small in size.

VDE screwdrivers

Very similar to flat screwdrivers, but smaller and covered with insulating materials. This class of screwdrivers, also known as electrician’s screwdrivers, are especially important for taking safety precautions in dangerous situations.

They are easily recognizable both for their smaller and more stylized size, as well as for their flat tips and because they are made of non-conductive materials , such as rubber. Its name, VDE, is due to the name of the internationally accredited institution that tests the tools to certify that they meet the necessary security standards.

precision screwdrivers

So small that you would hardly believe that they are screwdrivers, there are different types of heads, but what matters about them is their small size . These tiny screwdrivers are used for very small devices, such as watches or cell phones, where extremely small screws are used.

torque screwdrivers

This type of screwdriver is not special because of its tip like the rest of the models on this list, but because of its handle. In this way, torque screwdrivers are used to tighten screws in a mathematically fair way , without overdoing it. The objective is to tighten the screws enough without breaking the material they fix and conversely enough so that they do not fall out. This is achieved thanks to the torque limiting clutch that allows the applied force to be limited beyond a certain.

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