Slotted screwdriver: match by size and shape

Every economist has to find an "emergency aid kit" at hand. In this set of tools for all occasions, there is always a set of screwdrivers. Is it necessary to disassemble a mobile phone, a toy, a prefix, a computer system unit - it is very difficult to do this without a special tool. The slotted screwdriver will securely screw on or, vice versa, quickly unscrew the fasteners.

Irreplaceable "scapula"

"Blade", or "sting", is called this type of tool not in vain. Flat, as if the flattened tip really resembles the last one. This design allows you to work with fasteners, in which the head has a straight groove (slot).

Slotted screwdriver is available in several modifications. And the difference is not only in the size of the instrument. Depending on the nature of the work, you may need a reinforced structure, or a product with an insulated handle, or with special incisions that improve the friction between the tip and the fastener slot.

According to standards

Despite all this diversity, there are strict standards, which must match any sold slotted screwdriver. GOST regulates the dimensions of the working part of the tool and its shape.

So, in the line of five-millimeter "blades" there are products with a tip length of 200, 150 or 125 millimeters. There are shorties in 75 millimeters. In a row of six-millimeter screwdrivers, the countdown starts at 100 millimeters.

In addition to the most popular width of 5 or 6 millimeters, there are tools with a tip width of only 1 millimeter. The upper (maximum) boundary corresponds to 10 millimeters.

The concept of "universal tool" does not apply to this category of devices. Screwdrivers must be selected individually in each case. Otherwise, you just knock off the fastener slot. Or break the tip. Ideally, if the working part is slightly smaller than the slot size. The tip then enters the slot freely, but does not rotate during operation.

And if you are not inclined carefully and for a long time to complete your box with tools, you should buy a ready-made set of slotted screwdrivers. As a rule, it includes the most popular devices.

Ergonomics and safety

The standards regulate and shape the tool's arm. Manufacturers strive to provide a comfortable grip and a reliable stop. Therefore, the slotted screwdriver has a handle that repeats the anatomy of the human hand. In some models there is even a notch for the thumb. Handles made of combined materials are very convenient. The softer inserts do not rub the palm, and the ribbed surface does not allow the fingers to slip.

The so-called percussion instruments are equipped with a strengthened handle . These are screwdrivers that are used to unscrew the rusty fasteners, when in the process it is necessary to walk on the handle with a hammer. In this case, the plastic can simply crumble, so it is better to have a handle made of metal.

To a slotted screwdriver did not fail during operation, pay attention to what steel its rod was made from. The most reliable products are made of hardened steel.

Remember that a quality tool is your safety.