Screwdrivers different types differ in purpose, features of operation, advantages and disadvantages, brands. In this article we will tell you how to choose a screwdriver and give useful tips and recommendations.

Types of screwdrivers and their purpose

Rechargeable. This type of tool has a built-in motor to ensure a faster process of tightening and unscrewing fasteners.

1. Indicative. Used to check the presence of voltage in the network using a miniature indicator.
2. With replaceable bits. Such devices have additional attachments (bits) for various types screws, fasteners, self-tapping screws for working in hard to reach places.
3. For screws. Screwdrivers for tightening/unscrewing screws various configurations.
4. Drums. Necessary for removing rusty bolts, screws, and self-tapping screws that are difficult to unscrew with a regular screwdriver.

Cordless screwdrivers have a built-in electric motor and power supply.

Image of a BOSCH cordless screwdriver for working with fastening elements in places where there is no direct access.

Due to the small battery capacity and low-power motor, these screwdrivers are compact in size. Such models provide an element for quick clamping of the nozzle, as well as the presence of a motor that drives the working part. Thanks to the reverse function, you can change the direction of movement of the bit, this is convenient for unscrewing fasteners.

Indicator screwdrivers equipped with a built-in indicator. Such varieties are necessary for simple and safe definition presence of voltage in the network.

Image of the STAYER indicator screwdriver, which can detect the presence of a voltage signal, both contact and non-contact.

There are two varieties:

• contact type device;
• non-contact device.

Contact type devices are equipped with a plate on the handle that the user must touch to correctly sense the signal. There are such varieties with a sound signal. Non-contact varieties - have a battery that allows you to detect breaks in the electrical circuit without a current signal.

With replaceable bits. They belong to the universal types of screwdrivers. There is a set of bits (nozzles) with different tip configurations.

Image of a GROSS brand model with a set of bits and socket heads in the amount of 48 pieces.

There are models in a set with bits (5-50 pieces). They can be either single-sided or double-sided with the included equipment holder.

For screws. There are two largest varieties:

• cross.

Image of Inforce Phillips Screwdriver with Magnetic Chrome Molybdenum Steel Tip

• flat.

Image of a STANDART flat-head screwdriver for use with stainless steel threaded fasteners

A Phillips screwdriver is used only when working with cross slot. It has the shape of a tip, ideal for screwing in screws. The flat one is used to work with flat splines. There are two main varieties:

• dielectric, such models have handles made of conductive material;
• Double-sided rod that can be easily changed.

Percussion. The operating principle is based on reproducing rotation while applying pressure to the nozzle. This force allows you to turn the hardened screw by 2-5 mm. This device is used only for the initial unscrewing of problematic fasteners. Then use a screwdriver other than this type.

Image percussion instrument brand SANTOOL, which has reverse, the ability to change the head and 6 bits

Advantages and disadvantages of different types of screwdrivers

Battery driven screwdrivers:

• Their advantages are the accelerated process of screwing in and unscrewing due to the presence of an electric motor, which is powered by a battery or from the mains.
• The disadvantage is that it is bulky compared to simple models and higher cost.

Indicative:

• Advantages - in addition to the main function, such screwdrivers help to visualize the presence of voltage in the network.
• Disadvantages - importance of using according to manufacturer's instructions. Read also the article: → "".

With replaceable bits:

• Advantages – large selection attachments, which allows them to work with almost any type of screw or self-tapping screw.
• The disadvantage is that you always carry a set of attachments with you in a special container or packaging.

For screws:

• Advantages: reliability, ease of use. Most manufacturers produce this type of screwdriver from durable material.
• Disadvantages – the need to purchase a model for a specific type of screw/screw.

• Advantages - without special effort allow you to begin unwinding the frozen fastener.
• Disadvantages - use only at the initial stage of unscrewing the screw.

Analysis of tool manufacturers

1. For installation work electrical networks The most commonly used screwdrivers are flat and Phillips screwdrivers with dielectric coating manufactured by Wera.
2. Work in hard-to-reach places is easy to do with MATRIX brand tools.
3. For long-term screwing/unscrewing, cordless screwdrivers from the KRAFTTOOL brand have proven themselves well. Thanks to them, you can quickly install fasteners.
4. When working with fasteners of various configurations, it is convenient to use models with replaceable bits from Stayer or FIT.

Screwdriver tips: types, differences, use

• Classic straight slot bit. Denoted by the abbreviation “S” from English. "slot". The marking is located on the side edge of the bit.

Image of a slotted bit indicating its markings and examples of fasteners used Table 1. Working dimensions of bits for a straight slot

This group of nozzles is divided into varieties:

1. The nozzle for a straight slot is classic;
2. TIN-coated straight slot bit.

The classic attachment is suitable for slot widths from 2.0 – 9.0 mm. The thickness of the gap can be 1.0 – 1.7 mm. Tips with TIN coating are more wear-resistant and are used for widths of 4.0 - 7.0 mm and thicknesses of 0.5 - 1.5 mm.

• TIN-coated straight slot bit. A titanium nitride alloy is used. This coating provides high strength.

Image of a TIN coated slotted bit showing its markings and examples of fasteners used

• The bit is cross-shaped. Marked “PH”.

Image of a cross-shaped bit indicating its markings and examples of fasteners used

Such attachments are often used when working with metal and wood materials.

Table 2. Working dimensions of cross bits

• Cross-shaped bit with notches. Marking – “PZ”.

Illustration of a cross-shaped knurled bit, with examples of its working objects given.

Thanks to additional notches, such bits can withstand heavy loads during long-term operation. The choice of tip is made according to the dimensions of the fastener. Read also the article: → "".

Table 3. Classification of screwdriver types by fastener sizes

• Hexagon shaped tip. Designated “N”.

Image appearance hexagonal tip, with examples of its working objects

These bits work with screws and self-tapping screws. They create tight contact with the fastener.

• Star shaped nozzle. Marked – “T, TX”.

Image of a star tip showing its markings and examples of fasteners used

The hexagonal base allows the nozzle to be in reliable contact with the fastener.

• A nozzle with a square slot. Marking – “R”. Used in specialized types work.

Image of a square slot tip, indicating its markings and examples of fasteners used

• Nozzles with anti-vandal slots. Marking – “SP”. High-strength steel is used, such attachments are very durable and reliable.

Image of a tip with anti-vandal coating, indicating its markings and examples of fasteners used

• Tips with Tri-Wing - slot. Marked – “TW”. Such attachments are used for assembling and repairing electronic household appliances.

Image of a tip with a Tri-Wing slot, indicating its markings and examples of fasteners used

• Torq-Set – tips. Markirvoka – “TS”.

Image of a Torq-Set tip with its markings and examples of fasteners used.

Tip #1. If you need to perform work in hard-to-reach places, then best choice- flexible screwdriver.

Picture of the working principle of a flexible screwdriver for working in hard-to-reach places

Tip #2. When assembling, it is better to use the dynamometer variety. It allows you to control your efforts thanks to an indicator scale.

Image of the working elements of a torque screwdriver for quality control of work performed.

How to choose screwdriver size

Each type of screwdriver indicates its nominal size width and thickness. It will be enough for the average consumer to have models or attachments (SL3, SL5, SL8). The parameters of such varieties are 3-20 mm. Among the cross-type ones, the most popular ones are PH2, which work with most screws and self-tapping screws.

Among the manufacturers we can note:

1. FIT . Budget Chinese brand. Offers a very large selection of different modifications. But count on high quality not necessary here.
2. GROSS . A German company with a reputation for producing tools of high quality and reliability for professional purposes.
3. Stanley . An American brand that produces devices for professionals and amateurs. The basic feature is the ease of use of its products.
4. STAYER . Russian brand, producing budget screwdrivers. At the same time, it guarantees high quality and long service life.
5. Wiha . A manufacturing brand that produces tools for complex production tasks. High prices for equipment are compensated by reliable operation.

Frequently Asked Questions

Question No. 1. What types of screws are there?

Type of screws:

• on wood;
• instrumental.

Based on the specified criteria, screws are selected for a specific job.

Question No. 2. When are threaded connections used?

There are two types of screw connections:

• soft - when under the screw itself there is soft material(eg tree);
• hard – the case when a hard material (for example metal) is screwed with a screw.

Question No. 3. What factors should I pay attention to when using a cordless screwdriver?

When working with such a screwdriver, recoil is felt. This process depends on:

• noises;
• nozzles popping out;
• torques.

Question No. 4. How to protect yourself from the possibility of bits (attachments) slipping?

Reasons for bits slipping:

• the overall parameters of the nozzle do not correspond to the dimensions of the fastener sockets;
• Incorrect installation of the bit into the fastening part of the electric screwdriver. Read also the article: → "".
• misalignment of the tip during operation;
• very strong or very weak pressure of the electronic tool to the fastener.

Consequences for such errors:

• the likelihood of operator injury;
• causing defects on a working part;
• failure of the screwdriver attachment;
• damage to the fastener.

Mistakes when choosing a screwdriver

1. Selecting the groove width. If you select a screwdriver tip that is smaller than the fastener itself, then heavy scrolling will occur; in the case of using a cross-shaped screwdriver, the teeth and groove of the fastener will break.
2. Thickness selection. If thickness smaller size fasteners, scrolling will not be clear, additional effort may be required when turning. With a larger value, the tip of the screwdriver simply will not fit into the groove.
3. Selecting handle material. The plastic coating will cause slipping and rubbing of the hands during prolonged use. A rubberized base will help eliminate these defects.
4. Choosing the tip itself. For reliable operation, it is necessary to use only the tip for the specific fastener. Otherwise, the quality of work will be low and costly.

Screwdriver - the simplest tool, which should always be at hand: at home, in the country, in, because it is difficult to imagine any product, during the assembly or installation of which, they are not used threaded connections. This means that replacement or repair is not possible without a screwdriver. Let's take a closer look at how to choose a screwdriver and what types of screwdrivers will be preferable when performing certain jobs.

1. Design

A screwdriver is a rod with a tip at one end intended for certain type slot, and the handle on the other. Great value has handle material and size. It can be made from plastic, wood or rubber. The shape of the handle must be chosen depending on the size of the palm: the handle that suits you will fit comfortably in your hand.

Handle diameter varies from 10 to 40 mm. The choice depends on the size of the connection; the larger the threaded connection, the larger the handle should be. This way you will need to apply less force, since the handle directly transmits torque to the part. For small parts choose thin screwdrivers with a small handle. A correctly selected size will prevent the handle from being destroyed or the slot being torn off. Some screwdrivers have hole in the handle, which helps to apply even more force when tightening using an additional wrench. Screwdrivers with replaceable tips may have a cavity in the handle for storing bits.

2. Which tip is preferable?

We are not talking about the type of tip, but about material of its execution. After all, the functionality of a screwdriver depends on the strength of the tip. With prolonged use, especially if the type of screwdriver is incorrectly selected to match the slot, the tip quickly wears out, its edges may crumble and lose their original shape. Working with such a tool is inconvenient and significantly increases the amount of time required for repair or installation. To prevent this from happening, many manufacturers use high-strength materials for the tip, for example, molybdenum steels or chrome vanadium alloys. Many screwdrivers have magnetic tip, capable of holding small parts, which will be very convenient when working with small screws.

3. What should the rod be?

There are rods square, round or hexagonal shape. They also have different lengths , but whatever screwdriver you need, the hardness of its rod according to GOST should be 47-52 HRC. This is an indicator of hardness at which optimal strength is maintained with internal viscosity, which prevents the destruction of the rod when twisted with great force. If its strength is less than 47 units, then during operation it will simply bend, and if it is more than 52 units, then it may burst. Rods, as well as tips, are made by bona fide manufacturers made of chrome vanadium steel. To prevent, the rod is coated with a galvanized protective layer.

4. Handle modifications

Not only the convenience, but also the scope of its application depends on the shape of the screwdriver handle. Eat The usual, and probably the very first, shape of a screwdriver is straight, which has a wide range of applications due to the variety of sizes. But there are also improved forms of the handle that greatly simplify the use of a screwdriver.

5. Types of screwdrivers

Technological progress does not stand still, and in order to make the work of consumers in every possible way, several improved and quite popular types of screwdrivers.

6. Functional features of screwdrivers

Some screwdrivers have not quite ordinary, but very useful, additional functions.

• Telescopic screwdriver. Using the special structure of the rod, which resembles a fishing rod, you can adjust its length, and a special locking mechanism, will reliably fix the required length. The tips of such screwdrivers are usually magnetic, which allows you to work in difficult conditions or reach a fallen part in a hard-to-reach place.
  
• Impact screwdriver. It may happen that a threaded connection may become rusty, stuck, or coated with paint. Dismantling such a connection is not easy, because it requires a lot of force. For such purposes, there are impact screwdrivers that are made of high-strength steel. On the handle of such screwdrivers there is an anvil for impact or a shank for gripping with a key, which allows you to increase the leverage and thereby increase the moment of force. There is another variety impact screwdrivers which have a flat shank. When struck with a hammer, it converts the impact force into rotational force, which makes it possible to apply more greater torque forces on the element being eliminated.
  
  
• Precision screwdriver. This type Screwdrivers are used when working with small parts. It has small dimensions and a slot size of up to several millimeters, which allows you to carry out work as accurately and accurately as possible.
  
• Clock screwdriver. This is the smallest type of screwdriver. Used for repairing and replacing watch mechanisms. The size of its tip sometimes barely reaches one millimeter. There is a flat area on the top of the handle that allows you to hold the screwdriver in one place with one finger while the rod rotates freely. This allows the smallest parts to be screwed or unscrewed without having to reposition the tip and ensures high precision.
  
• Indicator screwdriver. An irreplaceable thing when executing . Thanks to a special mechanism built into the handle, the indicator screwdriver allows you to detect the presence of voltage on the element. There is a special contact on the handle to which you need to place your finger. If the part is energized, the built-in LED will light up.
  
• Dielectric screwdriver. A more serious type of screwdriver designed for working with electricity. The handle is made of a material with high insulating properties; sometimes the shaft of the screwdriver is also covered with this material, leaving only its tip exposed. This design allows you to carry out work even on open terminals of high-voltage equipment, withstanding voltages up to 1000 V.
  
• Cordless screwdriver. A small battery is built into the handle of such a screwdriver, allowing it to work as a screwdriver. You don't need to apply any force at all, and the tightening torque will be slightly greater than if you tighten it by hand. Such a tool can significantly speed up the assembly of various products.
  
• Torque screwdriver. This type of screwdriver is used in high-tech industries, aviation, mechanics, and astronautics. On the handle of such screwdrivers there is a small screen that allows you to measure the tightening force, or a special scale that allows you to set the required torque and install all connections with exactly the same force.
  

7. Slot shape

Not only the screwdriver handles are varied, but also the shape of the tip, which is selected depending on the required type of slot. Let's look at the most common ones spline shapes:

8. Non-standard splines

In addition to such tips, some manufacturers have produced screwdrivers specifically designed to work with special threaded fasteners. Thus, manufacturers protected themselves from unauthorized actions on the part of ordinary users and provided themselves with warranty service for their products. Fasteners with non-standard splines can be found in digital technology or modern car engines.

9. Slot size

We have become familiar with the possible shapes of the slots, but in order for the screwdriver to serve for a long time and not wear out, it is necessary to correctly determine the required tip size. To determine the size of splines, there are special standards in which each of them is assigned numbers. Flat head screwdrivers have a width from 2 to 18 mm. Phillips screwdrivers RN and PZ are numbered from 0 to 4 and vary depending on the diameter external thread fastening element. For example:

Depending on the number of the screwdriver, the diameter and length of its shaft depend:

• Screwdriver No. 0 has a shaft diameter of 4 mm and a length of less than 80 mm
• No. 1 – rod diameter 5 mm, length from 80 to 100 mm
• No. 2 – rod diameter 6 mm, length from 100 to 120 mm
• No. 3 – rod diameter 8 mm, length from 120 to 150 mm
• No. 4 – rod diameter 10 mm, length from 150 to 200 mm

10. What should you pay attention to when choosing a screwdriver?

In specialized stores, the selection of screwdrivers is so large that anyone would be confused. Sometimes sales consultants can come to your aid, but, unfortunately, they do not always recommend a truly high-quality product, so you should rely only on yourself. The only thing you can do directly in the store is to carefully inspect the product; you will be able to evaluate how it will cope with its main task only after purchase, so be careful.

Pay attention first to the handle, hold the screwdriver in your hand. it should fit comfortably in your palm and not slip. The handle itself, no matter what material it is made of, must be made carefully. If it is rubber, it should not have pores or excess material at the junction. Then pay attention to the rod; some manufacturers apply markings indicating what material it is made of. The presence of such markings may imply factory quality.
The tip, as the most important part of the screwdriver, must be very durable. Look at its color, if it is darker than the rod, this indicates additional reinforcement, which is a clear advantage. Even little things like this can help you decide and choose best product that will serve you for many years.

Screwdrivers - perhaps the most the right tool necessary for every person. At least once everyone had to assemble furniture, hang a shelf, screw a board. It is necessary in the garden, at the dacha, in the garage, in any production.

There are a huge variety of types and manufacturers of screwdrivers, and the choice of a specific one depends on your needs. It can be a Phillips, flat (slotted), star, triangular, hexagonal, precision screwdriver, or cell phone.

Phillips screwdriver (symbol ph, abbreviated by Philips). This is the most commonly used type. There are several sizes of the cross. The smallest one has the number No. 000, a little more than No. 00, No. 0, No. 1, cross No. 2, No. 3 and No. 4. The tip is usually magnetic for ease of use. A screwdriver marked 000 is used, for example, to repair very small objects, e.g. cell phones, cameras. The cross is suitable for most self-tapping screws, screws (you need to choose the correct cross number), most often cross number 2 is used. You can tighten screws for wood (black), with a press washer (white with a large head), for metal (black), etc. In cars , large equipment uses a cross number 3.4.

Phillips screwdrivers

For yellow (yellow-passivated) screws, a cross marked PZ is suitable. It differs from a regular cross in the presence of additional notches for a tighter grip of the screwdriver tip with the self-tapping screw. The cross also has several sizes. Judging by experience, the yellow screws can be twisted with a simple Phillips screwdriver (ph), no problem, you don’t have to look for the PZ connector.

A slotted (flat) screwdriver is needed for tightening and unscrewing screws and screws. Used much less frequently than the cross. The dimensions of a flathead screwdriver are measured in millimeters. The width of the tip is measured. There are both small (1mm) and large (more than 10mm).

Impact screwdriver necessary for unscrewing very tightly tightened or stuck screws. The principle of its operation is as follows: you place a screwdriver on the screw, then hit the handle with a hammer, at the moment of impact it spins. The unscrewing force is very high. A set with a screwdriver usually contains interchangeable bits, both Phillips and flat. Their sizes are quite large, since such a screwdriver is used when working with large structures and parts. After all, you won’t be hitting with a hammer to take the kettle apart.

If you twist screws quite often and a lot, then it would be appropriate to purchase a cordless screwdriver, it’s quite convenient. For example, for assembling computers. Self-tapping screws cannot be turned with a screwdriver, only threaded connections. For self-tapping screws you need a screwdriver (cordless drill). The tightening force of a screwdriver is much lower, approximately 4.5 Nm/m (newtons per meter), a screwdriver has at least 10, a professional one has about 30 or more, of course you can twist very small screws (up to 20mm long and no more than 3mm in diameter), but it will The battery drains quickly.

There are also quite specific types of screwdrivers. For example, for repairing cell phones.

Screwdriver set for cell phone

As a rule, they are sold in sets. It is equipped with several types of different screwdrivers: flat (slotted), Phillips, asterisks, double-pronged. There are very small and larger sizes. Clock screwdrivers also come in sets, equipped with several varieties and a magnet for easy lifting of small parts.

Screwdrivers are often sold in sets,

Screwdriver set

Quite convenient, you never know what you will need. There are screwdrivers with replaceable bits. At the end of this there is a special connector into which various attachments (bits) are inserted; they are sold separately or in sets. Bit sets very often contain very rare and specific species. If you can’t find the screwdriver you need individually, you’ll very likely find it in a set of bits.

Set of specific bits

A three-pronged screwdriver is enough rare species, are used in the repair of modern household appliances.

It is worth noting dielectric screwdrivers. Unlike conventional ones, the working length is covered with dielectric material. If the part is live, you will not get an electric shock. Withstands voltage of 1000 V.

Dielectric screwdriver

Probe screwdriver needed to determine the phase in the socket, you can also find out whether the part is energized or not. There is a special indicator. Insert the tip into the socket, or apply it to bare wire, making sure to touch the top of the screwdriver with your finger (not the tip). If there is voltage, the LED located in the screwdriver will light up. Necessary for home repairs, when installing chandeliers and sockets. You can also use this as a regular screwdriver. Suitable for small screws and screws.

Ratchet and reverse function of the screwdriver. It is very useful during long-term work, it helps you not to constantly catch yourself; you just need to rotate the hand without releasing the screwdriver handle. You can either tighten or unscrew the screws.

Many screwdrivers have a rubberized handle that prevents your hand from slipping. There are also oil-benzo resistant handles. These are resistant to aggressive environment such as gasoline, diesel fuel, kerosene. Ordinary handles “corrode” in such an environment.

How to use a screwdriver correctly? The main thing is to choose exactly the type that is needed for a particular screw, bolt, self-tapping screw. If the screw connector is Phillips, then you should not tighten it with a flat-head screwdriver. If you are tightening a furniture screw (confirm), then you need a screwdriver with a hex tip (size 4mm). It is important that the tip of the screwdriver sits very tightly in the head of the screw. Then it will not turn and you will not twist either the screw or the tip of the screwdriver. If the screw is rusty, you can use a special one. means, let the rust soften, only then unscrew it. Otherwise, you will twist the screw head and then have to drill it out.

A screwdriver is an object, although not ancient, but used since ancient times. This tool is found in a variety of industries, but always in typical situations - when you need to screw or unscrew fastener having a slot. It is considered one of the main hand tools, so at least one, and often all at once main types of screwdrivers found in most home repair kits.

A screwdriver is an object that has a handle and a rod. There are no standards as such for the length of both. During operation, a fairly large force is applied to this tool, so the material for the rod is usually steel with a chromium-vanadium alloy in its composition. The tips are magnetic, specialized for one or another slot. The dielectric coating of the handle and rod is also considered good form.

Types of screwdrivers by slot type

A slot is a recess (groove) that is located at the top of a fastening element (screw, bolt, screw). Its shape can be different, the size directly depends on the size of the product itself. Splines and corresponding types of screwdrivers there are:

Direct

The simplest type. Its marking is SL or slotted. In the description, manufacturers indicate the length of the groove in millimeters; sometimes (for large products) the second indicator is its thickness or depth, if the tool is specialized for the specific size of the fastener groove.

Cross-shaped

Has the shape of a cross. Phillips screwdrivers marked Phillips (PH) are used for this.

Cross slot with recess for guide

In the middle of the connection of the beams of such a slot there is a hole for better fixation of the screwdriver and increasing the pressure force.

Improved cruciform

They have additional beams to stop the tip from being pushed out. Marked as Pozidriv (PZ).

Six-pointed

These are, as a rule, grooves in the form of six-pointed stars, used in small parts. Screwdrivers have a proprietary name torx.

Square

Section in the form of a corresponding figure. Bolts with such a slot are often used in the production of computer equipment. The sizes of suitable screwdrivers will be small. Markings – Robertson or square head.

Hexagonal

Types of screwdriver slots with six internal edges.

Triangular

Triangle shaped grooves.

There are also many highly specialized splines that are used in rare areas, for example, space or aircraft construction.

Thus, the most common types of screwdrivers are straight (or flathead), Phillips (or Phillips), hex and hex.

Handle modifications

The handles of conventional screwdrivers are now made of plastic or wood. To reduce slipping, a special rubber coating can be applied or various kinds small depressions. Modifications are made mainly to facilitate the screwing/unscrewing process or to increase the torque.

With ratchet mechanism

Like compound socket wrenches, such tools have an attached “ratchet”-style handle, which allows you to keep your hand on the product while working. The package usually includes a set of straight and Phillips bits.

T-shaped or rotary

These types of screwdrivers have either a curved solid top part, or a hole in it for inserting an additional lever.

Handle with heel

Standard screwdrivers have a shaft that is “recessed” about halfway into the handle. But in some subtypes of the tool, the rod passes through and at its other end has a thickening in the form of a heel, which can be hit with a hammer if necessary. Such tools are used when the fastener slot is very dirty and simple pressure cannot solve the problem of screwing.

Types of screwdrivers by modification of the rod

Long or short

They have elongated or, conversely, shortened handles and corresponding rods. These screwdrivers are not standard, they are designed for ease of work in hard-to-reach places.

With replaceable tips

Such a tool, as a rule, has a “ratchet” handle or a standard handle, but with a universal rod, for which the kit includes bits for different slots.

With faceted rods

The standard screwdriver blade is round. The square or hexagonal cross-section allows, if necessary, to add torsional force through a lever (as with a T-handle), which can be a regular open-end wrench.

These types of screwdrivers can be supplemented with a so-called electric screwdriver. She is widely known now. We are talking about a “screwdriver”. However, this is not a hand tool, which is similar to a compound screwdriver, but also incorporates some features of an electric drill.

Everyone knows the Phillips screwdriver. Many people know that they differ in size, and if the size of the screw and the bit do not match, then when screwing in they can be torn off. But not everyone knows that Phillips screwdrivers are divided into two types:

• Phillips (PH);
• Pozidriv (PZ).

Of course, these are not all types of splines, there are several dozen of them, but the rest are rarely used:

PH is a standard Phillips screwdriver. The PZ has additional serrations and a different tip shape. The PZ provides a stronger grip and is gradually replacing the outdated Phillips tip.

Philips has two slots that are located at right angles to each other. Its main disadvantage is the risk of damage to the screws, since the force is adjusted in a narrow area.

Pozidriv is an improved Phillips profile. Its difference lies in the additional cross, narrower and less deep. This shape fits into the fastener better, and the risk of thread breakage is reduced several times.

Of course, you can drive screws with any screwdriver, but due to different shapes The tool will sit unevenly on the tips and slots and there will be play. Because of this, the risk of breaking the screw increases, the bit deteriorates faster, and the quality and speed of work decreases. When using the right screwdriver, it's easy to immediately feel the difference.




Screwdrivers and bits are even easier to distinguish. When purchasing, the type of tip is always indicated on the price tag or packaging.

In addition, the type, size and length of the working part are often already indicated on the screwdriver itself.

The designation PH1x80mm makes it clear that you are holding a screwdriver with a Phillips tip of the first size and a long working part of 80 mm. The first and second sizes are most often used.




Video instructions:


How to choose a quality screwdriver

Don't expect cheap products good metal and an ergonomic handle, it is better to initially choose screwdrivers from well-known brands. This is 2-3 times more expensive, but then you can use one screwdriver for many years, which is better than changing Chinese products every six months. The screwdriver should fit comfortably in your hand and not press on your palm. Even the slightest inconvenience during the work process can reward you with bloody blisters. Poor quality screwdriver steel when applied great effort will quickly lose its shape and begin to scroll on the slot of the screw head. It is quite difficult to check the quality of steel when purchasing; usually, the more comfortable the handle, the higher the quality of the steel. The price is appropriate.


Screwdriver manufacturers

• Stanley is an American company with production in Thailand. A wide range of screwdrivers of fairly good quality.
• STAYER is a Russian company that produces budget tool. It produces quite good screwdrivers in its price category.
• Wiha - produces premium tools. Screwdrivers from this company are expensive, but high quality
• JONNESWAY is a Taiwanese manufacturer that produces very high quality screwdrivers
• Hama is a company from Germany, production in China. The products of this company are highly reliable

A high-quality screwdriver will last for many years, provided correct operation. You just have to follow a few simple rules: Use a different screwdriver for each screw and do not use the screwdriver as a lever or chisel.