Choose wisely screwdriver

In any house, without exception, there are at least a couple of screwdrivers: Phillips and flat. And for their basic needs is enough, but like any other tool, they can break and Scroll to the store to buy a screwdriver, you will be surprised what is now a wide choice. And to choose a high quality screwdriver, ideally meets all the requirements, it will be difficult. But in this article I will try to help you to make a difficult choice. So, let's begin.

Tip

Screwdriver is made of three main parts: a handle, a tip and a shaft. And the most important (and at the same time weak) link is the tip. This is where we'll start.

There are many forms of tips:

But only a few of them are useful in everyday life, such as:

Previously, the most frequently used was a direct slot, but the time is now for the first place in popularity took a cruciform slot (also called Phillips) Or its more modern version called Pozidriv. Such slots are making a significant torque.

It is also widely used hexagonal slots and slots TorxSuch species can withstand even heavy loads.

And all the other types can be written in rarely used, so a screwdriver with these tips just does not make sense to keep the house.

But in addition to the tip shape and size without significance, because if properly choose the size and shape of the tip, you would cut or slit or break a screwdriver.

Selecting the size of screwdrivers

So, we already know the most commonly used types, so we will continue to speak only of them.

1. Flat screwdriver. These products are marked by a letter code SL, And then running the figure indicates the width of the slot. Furthermore, this width varies from 2 to 18 millimeters. But at home in most cases, apply a screwdriver with dimensions: SL3, SL5, SL8.

2. Phillips screwdriver. are marked PH a further-reaching number (000; 00; 0; 1; 2; 3; 4). The most commonly used PH2, PH1, Which are ideally suited for the vast majority of screws and bolts used in the house.

That the tip does not slip out, make it especially rough. To do this, high-quality products lugs are covered with a layer of a specialized inflated or friction applied incisions.

In addition, the tip has to be solid and not brittle, as well as securely fixed in the slot. These parameters can only be achieved using quality raw material for the rod and its correct processing.

Kernel

Screwdriver rod can perform a variety of forms, lengths and strength. The most important is its strength, characterized by a hardness. And according to GOST, this figure should be in the range of 47 before 52 HRC.

If this option below 47 HRC, The rod can be deformed, and if exceeds 52 HRC, the rod just crack.

To ensure a predetermined hardness manufacturers use high-alloy chromium-vanadium steel. The manufacturer can either indicate that it is used in such steel (CR-V, chrome - vanadium), Did not specify.

In addition, for protection against corrosion are often coated rod coating. A tool to work under stress isolated sting plastic or rubber insulation

For home is best suited screwdriver with a long shaft from 100 to 200 mm. In rare cases, you may need the so-called fungus:

Lever

An important part of the product is the handle. Most often made of plastic (with rubber inserts and without them), wood.

The dimensions are selected depending on where it will be used. If you have to work in a confined space, he immediately fit a short handle.

The diameter of the pen tip is almost always proportional and rod. In other words, if the tool is designed for powerful fastening, the handle will be thicker, to provide the required torque.

As the handle may have not only classic (cylinder) type, but the T - shaped. This handle significantly increases torque. But the most important to handle it comfortably lying in the palm of your hand, and the grip was sure.

Screwdriver with interchangeable tips

The modern market offers also a very wide range of screwdrivers with replaceable tips, so to speak a universal option. Professionals will not even see these items, but I think that in life they may well have the right to exist, but with a caveat.

For major works should buy good quality and a screwdriver, and for occasional work-proliferation shape slot is fine and dial-up option.

I hope this article will help you with the selection of screwdrivers. If the article is useful or interesting, then vote it Like. Thank you for your attention!