Sizes of flathead screwdriver: characteristics of flathead screwdrivers

The screwdriver is a truly versatile tool that is simply indispensable in the household and in other areas where it is necessary to work with threaded fasteners. There are a huge number of screwdrivers in total, but the most common options are flat and cross. Today we will talk about the first option: we will analyze the main characteristics of a flat screwdriver and find out how to correctly select its size.

It is interesting! It is a flat screwdriver that is the first type of this tool. It appeared in the 15th century. The variety has survived to this day with minor changes.

Characteristics of flat screwdrivers

The flat screwdriver is distinguished by its versatility. It can be used for various types of fasteners, including self-tapping screws, screws, etc. The flat screwdriver fits perfectly in the slot of the bonnet. With such a tool, you can create a good torque without any problems and difficulties. It also has a number of distinctive features and characteristics. These include:

• in addition to standard applications, it is used in electronic trimming circuits;
• it allows you to open locks that have slotted grooves;
• A variety of tools are equipped with a flat slot, for example, an ordinary kitchen knife, plates, etc. - this means that if the screw is not tightened too tight, then it can be unscrewed using the listed tools.

Also, using a flat screwdriver, you can pry the removable panels, scrape off dirt from the grooves, separate the stuck pads. In addition, it can be a good alternative for a chisel or chisel.

However, non-standard use will accelerate tool wear and therefore may require repair or refurbishment. These include sharpening. It is important to know that you need to sharpen a flat screwdriver correctly. The sharpening principle is the same as for skates. After that, the slot must be magnetized. To do this, you can leave the instrument next to a powerful magnet for a long time, for example, for a day or two.

Reference. Today, you can find the right screwdriver in almost any store. However, if you do not have the necessary tool at hand, then you can make it yourself. To do this, you need to take a large nail and grind its sharp end under a flat slot, and bend the other end so that the handle comes out. If you have bits, you can make a portable tool. This will require a few washers and bolts.

How to choose the right size screwdriver

To make it convenient and comfortable for you to perform work on unscrewing and tightening the fasteners, in addition to the shape of the tip, you need to pay attention to a number of other factors. First of all, it is the size of the tip.

Ideally, a specific tip size should be used for a specific spline size. However, in practice, things are a little different - many ignore this rule, or more correctly, the prescription, and believe that almost any tip is universal (especially when it comes to the cross screwdriver). If the tip size is incorrect, the tool shaft may be broken or the spline may simply be cut off.

To choose the right screwdriver, you need to know its markings. Flat ones are marked with English letters SL.

After the letters, numbers are written, which mean the width of the slot. This parameter can vary from 2 to 18 millimeters. The wider the tip is, the thicker the rod itself. The most common sizes on the farm are SL3.5 and 8.

Important! When choosing the desired tip thickness, do not forget that it must be firm so as not to break under stress and to be well fixed in the slot. A high-quality slotted screwdriver has a special coating, it creates a roughness, which simplifies the process of working with fasteners.

When choosing this tool, do not neglect the length and thickness of the rod. If the fastener is set deep, then the short rod may simply not be enough. If the rod is very thick, then it simply will not fit into the recess with the screw.

On top of that, don't forget about the strength of the rod. If it is too soft, it can bend or crack from high loads. Prefer chrome vanadium screwdrivers. They are distinguished by their high strength and durability.

The most common rod lengths range from 10 to 20 centimeters. If it is necessary to carry out work in a confined space, then choose a tool with a short shaft.

The last thing to look out for when choosing a screwdriver is the handle. The silicone grip fits best in the hand. It does not slip during rotation, thus ensuring complete safety.

If you need to work in cramped conditions, then give preference to a short handle. Some modern screwdrivers have a special metal plate at the end of the handle. Such a handle can be hit with a hammer, which is especially necessary in cases where the fasteners are rusted or painted over.