For the screwdriver bit as the main working tool assembly

For the screwdriver bit facilitates and simplifies the process of installation of fasteners, as well as the withdrawal by the time of repair and construction work. If the nozzle is chosen properly, increasing the risk that the tool will fail. This article will help avoid similar problems, to understand all the features and varieties of removable devices for the screwdriver, and the nuances of their use.

Bits for the screwdriver: the device and the overall classification

Bits for the screwdriver or the head, have a simple structure. These nozzles consist of a removable rod which is fixed in the chuck of the electric tool. It is inserted into the drill. The rod is formed as a hexagon. Each bit has a particular shape which corresponds to a certain type of fasteners.

All existing varieties of bits can be divided into three categories:

1. Key - actuator nozzle is in the form of a cross. These lugs have good coupling with the heads of fasteners.
2. Combined - equipped with nozzles working body on two sides, each of which may have its own size and shape.
3. Special - tips from this category are called specialized. These bits are designed to perform specific tasks, they are rarely used, and therefore are only sold by the piece.

Varieties bit screwdriver intended for

The shape of the working part of the bits depends on its purpose. On this basis there are the following kinds of heads:

• for bolts and nuts;
• with vandal-proof slot;
• professional;
• plasterboard;
• with the design of the "fork";
• magnetic and spring.

Useful advice! It is advisable to buy one set of nozzles. Piece bits are more expensive.

Form bit intended for twisting and tightening bolts and nuts, nonstandard. The working part of the head is not convex like most terminals, and has a hole. Dimensional such bit line is quite extensive. Nozzles staffed vandalism slot, called "snake eyes". The shape of the tip is adapted to the spanner.

Professional screwdriver bits for a high degree of reliability, excellent strength characteristics and a long service life. With such heads can be spun a large number of fasteners. Nozzles for professional use are made of metal of high quality, they are protected by a special coating.

The set of professional heads usually present torsion bit for impact screwdriver. From conventional nozzles can be distinguished by their appearance. In its section between the shank and the slot is very narrow. Torsion bit has a special design with a special flexible insert which is designed as a spring. This component works in torsion. Such a structure allows the use of a torsion bit for very hard materials, applying the self-drilling fasteners. With such a head can fully sink in the metal screw, which together with a cap.

By a separate group of bits for screws are nozzles designed for drywall. They have a limiter that will not damage the material during installation. Plasterboard rather fragile, so you should avoid strong pressure while screwing in screws.

Bit with the design of the "plug" - a kind of anti-vandal slot. Outwardly, it looks like a flat head version, only with a slit in the middle.

Properties of the magnetic spring and the screwdriver bit for

For work in confined spaces, as well as on the ceiling of the bits are used with special features - magnetic or clamp. Tips with spring clamp is well retained in the adapter. As bits for screwdrivers, magnetic heads provide good coupling with the notches of the fastening element (screw). Connectivity nozzles are used to in the process of the tip slipping off the fastener head.

Useful advice!If you need to tighten the screw as far as possible, it is better to use a magnetic bit instead of the usual.

Head with a spring structure is classified as special. They are used in cases when it is necessary to install fasteners in tight places or at different angles. Such bits consist of a base and a slot, which are interconnected via a flexible spring. Moreover, the slot in such products is fixed manually. After that, it is inserted into a notch on the screws. Due to the flexible spring fasteners can be spun at an angle which exceeds 90 °.

Adapters or extenders for the screwdriver bit, considerably simplify the construction. There are two variants of these structures:

1. With magnetic holders.
2. With inner retainer having two legs form a curved shape.

Adapters are designed for standard nozzles, they are comfortable and practical.

Bits for the screwdriver: types of nozzles according to the type of material and form

For the production of removable heads used hard and soft metals. The quality of these products, as well as the operational service life depend on the raw materials used to manufacture them.

Best quality tips obtained from the alloys:

• chromium and vanadium;
• silicon-spec fire;
• chromium and molybdenum;
• vanadium and molybdenum.

Sales can also be found bits of steel, but the cost is very high. Given the short period of operational service costs of purchase of such expensive products can not be considered justified. Do not save even pobeditovye soldering, which are designed to extend the "life" of steel heads. A more effective protection is titanium coating which is superior in the degree of reliability nickel, diamond and volframonikelevoe sputtering.

Important! It is not recommended to use steel bits to work with the hard rock of mineral origin. In contact with such materials crumble head.

Bits for the screwdriver: a direct snap slot

Head under the direct slot - standard equipment in sets of bits for the screwdriver Bosch, Metabo, Hitachi, and other brands. They are used in almost all types of work. Bits under direct slot appeared among the first. This snap-in is designed to tighten the screws and bolts on a straight section of a hat.

Nozzles under the direct slot can be identified by a characteristic marking Slot. Typically, these bits are marked with the letter S and a figure which represents the width of the slot. This figure may vary in the range of 3 to 9 mm. The marking head thickness is not displayed since it is standard and is 0.5-1.6 mm. To find out what material is made nozzle, it is necessary to look at the shank. It was there that manufacturers specify this information.

In titanium bits for the screwdriver good strength values. Some of them have a golden coating and are marked with letters TIN. This means that the head is covered with titanium nitride. Such devices have a width of 6.5 mm, which exceeds the standard. Their thickness, on the contrary, does not reach the accepted measure and it is not more than 1.2 mm.

Slotted nozzles are often combined. Usually their complementary cross head. This approach is due to the versatility and practicality, because these nozzles are most in demand.

Features Hex Hex bits for power tools

For fixing the fastener hex head used Hex nozzle. These screws are used in the repair of large equipment, as well as in the assembly of heavy furniture designs. This form of notches, called Allen (Hex Socket), was invented in 1910. Its first application is found at the "Allen Manufacturing Company."

Hexagonal bits are marked with the letter H. Good torque - a distinctive feature of these nozzles. In this way, completely exclude the possibility that the thread slips or during installation of fastener head itself will be damaged.

Bit size for the screwdriver hexagonal shape is within 6-13 mm. The most popular are considered to be the head of 8 mm. They are used for mounting screws during roofing work. There are also other characteristics Hex nozzles. One of the principal sides is the distance between the tip hexagonal shape. Nozzles with index 4 mm are used for tightening fasteners furniture.

In addition, manufacturers produce safe type slot called Hex-Pin. In its central part is a special pin. Due to the unauthorized demolition of such compounds is simply impossible.

Note!Hex screws are easy deformation. This nuance is necessary to consider, installing such fasteners.

Characteristic Phillips screwdriver bit for

Many companies produce their own beats. Despite the fact that they put brand name, these products have a standard form. Philips has marks crusades nozzle letters PH. This company produces several sizes of bits for the screwdriver: PH2, PH0, PH1 and PH3. The diameter is selected in view of the magnitude of the head of the fastening element.

The most popular are considered bits size PH2, they are used in construction and repair works. Head marked PH3 are used in the assembly of furniture, as well as to repair the car. The length of the nozzles varies between 25-150 mm. To make installation work in confined spaces, apply flexible extensions.

Proprietary head Pozidrive are reliable, have a sufficient torsion torque, and also provide a strong coupling, even at a slight angle. Company cruciform mark bits PZ letters and digits displayed head size - from 0 to 4. PZ0 Nozzles designed for twist screws and screws of small size, a diameter of 1.5-2.5 mm. The head of the largest size PZ4 used to set the anchor bolts.

Both companies, in addition to classical heads produce bits with a titanium nitride coating.

Characteristics and dimensioning bit-stars

Bits in the form of sprockets are used for installation of fastener used in the production of household appliances, as well as in mechanical engineering. These bits are labeled TX letters or T. Their full name - Torx. Next to the letter designation indicates a figure that shows the size of the head. This figure corresponds to the distance between the sprocket rays.

In 1967, Textron company first introduced the owners of the electric tool bits are star-shaped with six beams. Almost all of them are highly specialized purpose.

There are several variants of tips in the form of an asterisk:

• classic;
• Torx Plus;
• with TIN-coated;
• the hole inside.

Related article:

Attachment to the screwdriver: functional tips for power tools

Tips for power tools, their types and functionality. Removable devices for grinding, polishing, cutting and other tasks.

Classic bits provide excellent coupling with a screw or screws during installation. To create a torque user does not need to exert much effort. Dimensional range of heads is quite extensive, but the most popular options ranging from T8 to T140.

Note!The dimensions of the classic bits from T8 to the T140 - the most common. This does not mean that you can not find the tips that will be more or less than these values.

Rays hexagonal stars on the heads Torx Plus are not as sharp. In addition, they are much shorter. Such a shape provides increased precision of movement during the performance of work requiring special care. Torx Plus Bits are made of very hard steel. Their sizes vary between T10-T140. They have the same magnitude nozzle with a titanium nitride coating and a head with a hole inside, used in assembly industries.

Overview of parameters for long screwdriver bit different shapes

In each group of bits can be found with an elongated head design. This allows you to more accurately perform certain types of work. The elongated slot bits under the direct stinger is firmly fixed in a hat fastener. This makes it possible to carry out qualitatively minor installation work. The length of these portable devices ranges from 50-100 mm.

Phillips-head with an elongated structure, used for assembly work in tight spaces. However, they are not as effective when it is required to unscrew the fixing elements.

Cross-bits are available in three sizes (PH3, PH1 and PH2), and their length may be as follows:

• 50 mm;
• 70 mm;
• 90 mm;
• 110 mm;
• 125 mm;
• 150 mm.

Similar parameters have Pozidrive cross-shaped nozzles. Elongated hexagonal head used in the work are much less likely, however, they are convenient and practical. These products are made of stainless steel, so they have good strength. Their length is in the range of 50 to 100 mm, and size - from 3 to 8 mm. With regard to the nozzles in the form of stars, their length is the same. Manufacturers offer a nozzle data with the extended design size from T10 to T140.

Overview screwdriver bit for odd-shaped

To nozzles are irregularly shaped triangular head, can be labeled letters TW. Their size is marked with numbers from 0 to 5. The design resembles a trihedron, and it is used for installation of fasteners Phillips, which is usually found in household appliances foreign production. Specifically for drywall attachment provided with limiter.

Also on offer can be met head square-shaped letters R. They have four sides and are intended for a narrow application - the assembly of large furniture designs. Square heads are available in four sizes.

Bits in the form of plugs have a flat slot, in the central part of which a slit. These nozzles are marked with the letters GR and are available in four sizes. Fork bits may be standard or extended (to 100 mm).

Marking TW is also found on the products with three or four lobes. This professional use nozzles, which are used in the industry, affecting the aviation and kosmostroeniya.

Useful advice!Bits of irregular shape are found in household sets, but at home they are used very rarely. If desired, choose the best bits for the screwdriver is recommended to give preference to a kit consisting of the most popular types of attachments.

How to select the bits for the screwdriver: prices and optimal sets

Sets bits are in high demand among consumers because they contain tips for all occasions. Such kits can help out almost any situation, so it is important to choose the really high-quality option.

How to select the bits for the screwdriver in the set? Main criteria:

1. Filling - it is desirable to complete the bits present basic forms. They can be supplemented by highly specialized nozzles, but the purchase of sets of data costs will be justified only if such heads are really necessary and will often be used.
2. The quality of metal from which the nozzle.
3. Reputation and reliability of the brand - the most qualitative considered such foreign brands as Bosch, Metabo, Hitachi, Makita, Craftool etc... On sale there are also products of domestic brands. For example, for screwdrivers "Zubr" are the head of "Master" and "Expert".

Ranking table top set with nozzles on the screwdriver (on the sets of prices):

Category	Name	Place in rating	Quantity of objects.	price, rub.
The average price segment	Bosch 2607017164	1	43	1600
Craftool 26154-H42	2	42	1250
Hitachi 754000	3	100	1450
premium class	Metabo 626704000	1	71	1250
milwaukee Shockwave	2	56	2100
Makita B-36170	3	47	1600
compact cases	Bosch X-Pro 2607017037	1	25	800
Metabo 630454000	2	20	1250
Ryobi 5132002257	3	40	760
Sets with torsion bits	Wear Bit Impostor SET WE-057690	1	15	7100
Matabo Impact	2	7	2750
Bosch Impact Control / Quick release Bosch 2.608.522.327	3	7	900

The best bit for screwdriver sets of popular brands

"Bosch" Screwing in demand by consumers. Products of this brand are of high quality, reliability and performance, it is not surprising that the sets of bits of this company occupy a high position in the rankings.

Advantages of Bosch 2607017164 set:

• head made of a durable material;
• convenient case with a rubber coating;
• Magnetic holder with quick and versatile design.

Note!Many of Bosch sets manufactured in China. Despite this, the quality of the products is still maintained at a high level.

In the same category the best collections of hit head screwdriver kit for "Hitachi" 754 000, which is considered one of the greatest, as the number of nozzles in it up to 100 pcs. Many of them are duplicated, so in case of damage you can always use a spare bat. On the quality of these heads can not be compared with nozzles Bosch, the only reason why this package was on the third place ranking. However, if you avoid big loads and carefully exploit bits, they will last a very long time.

If you wish to purchase the highest quality tips should pay attention to the products of the premium class. In this category recognized as the best set of heads for screwdriver "Metabo" 626704000, possessing outstanding features and performance characteristics:

• easy color-coded for each type of slot;
• attractive appearance;
• presence bit with an elongated structure;
• lightweight and compact carrying case.

And to top it all the advantages listed above, you can add a relatively low cost of this set.

How to insert a screwdriver bit: algorithm tool-change

The screwdrivers there are two types of cartridges: a key and quick-coupling. replacement algorithm on the tool bit in both cases performed almost identically. To change the bit on the keyless chuck, you must perform the following actions:

1. Selected nozzle corresponding shape and size desired with the fixture parameters, which will use it to twist.
2. In a counter-clockwise spins cartridge.
3. The central part sets the selected head. It should be placed between divorced clippers.
4. To clamp the nozzle in the cartridge, it is necessary to rotate the sleeve in the clockwise direction.

Before you pull out the drill bit, you should change the direction of rotation by switching on the unwinding mode. You can then remove the head. Thus one hand held mobile part of the cartridge, and the second arm start button is pressed.

packing algorithm change in the chuck-key:

1. The key is inserted into a corresponding recess.
2. With it unwinds cartridge.
3. Set the selected head.

To lock the nozzle, it is necessary to turn a key in a clockwise direction.

How to upgrade the 12-volt cordless screwdriver

Cordless Screwdrivers much easier and more mobile network of their colleagues. The only problem is that the Ni-Cd battery very quickly breaks down and buying a new one would cost almost as much, and the new tool. The optimal solution of such problems will be recast in the aggregate lithium screwdriver by installing batteries Li-ion.

For modernization tool screwdriver Li-ion will need:

• Battery Li-ion 18650 (4 pcs.);
• a flexible cable (2,5 mm²);
• payment BMS CF-4S30A-A;
• the body portion of the old battery;
• soldering capacity of at least 60 watts.

To charge a new battery suitable native charger for the screwdriver, if it is universal.

How to upgrade the screwdriver? To do this:

1. Disassemble the old battery.
2. Vypayat old cans, leaving the terminals and thermal sensors.
3. Connect all the elements of the 18650 with a soldering iron in one battery, using a flexible cable as jumpers. It should be done very quickly, because the lithium batteries do not suffer from overheating.

The resulting scheme should be inserted into the housing using the sealing material for fixation to parts are not damaged.

These modernization measures more than compensated, because the power of the updated screwdriver becomes larger and the charge lasts much longer than with a native battery. In addition, the battery after rework becomes easier.

In combination with the correct screwdriver picked up the bat is an excellent and indispensable assistant, if the house is required to make repairs. You can buy ready-made kit or necessary bits separately. The main thing - with the purchase of select high-quality and durable tool.