Slot screwdrivers: description, varieties and subtleties of application

Shutter screwdrivers – an indispensable tool both in the arsenal of professional masters and at home use. We will tell about the varieties and subtleties of the use of such screwdrivers in detail in our article.

Slot screwdrivers: description, varieties and subtleties of application

What it is?

Fixture for unscrewing / screwing fasteners with direct slot (spanning or straightforward, in conversation is flat, straight or linear) is called a slotted screwdriver. The working tip of the instrument is a wedge-shaped plate. This type of screwdriver is rightfully considered to be classic. With it, you can unscrew / twist various screws, screws, screws and other fasteners containing a place under a flat slot.

This tool can be used both for the work of direct destination (screwing / unscrewing) parts and to support any design elements. Due to its design, it can be used to configure or set up a wide range of electrical devices.

Slot screwdrivers: description, varieties and subtleties of application

Slot screwdrivers: description, varieties and subtleties of application

Slot screwdrivers: description, varieties and subtleties of application

Slot screwdrivers: description, varieties and subtleties of application

Marking

All slot screwdrivers are marked consisting of SL letters (from English. Slot – Slot) and numbers indicating the width and occasionally the thickness of the slot in mm.

According to GOST 24437-93, the following characteristics may have screwdrivers for fitter and installation work:

Screwdriver designation

Nominal diameter of screw thread, screw, mm

Working surface size, mm

Screwdriver length, mm

Length handle, mm

Handle diameter, mm

Rod diameter, mm

7810-0963

one.4-2.0

0.25 × 0.eight

85

45

12

0.eight

7810-0964

2.five; 3.0

0.4 × 1.6

one.6

7810-0965

3.five

0.5 × 2.3

105

55

fifteen

2.3

7810-0966

4.0

0.6 × 2.eight

155

80

18

2.eight

7810-0967

five.0

0.8 × 3.five

180

3.five

7810-0968

6.0

one.0 × 4.five

215

90

22

4.five

7810-0969

eight.0

one.2 × 6.0

250

100

25

6.0

7810-0971

10.0

one.6 × 8.0

eight.0

7810-0972

12.0; fourteen.0

2.0 × 9.0

300

100

25

nine.0

7810-0973

sixteen.0

2.5 × 11.0

eleven.0

7810-0974

18.0; twenty.0

3.0 × 11.0

350

100

25

13.0

More information is possible to find in GOST. Taking into account the fact that most of the modern screwdrivers continues to be made according to this standard. European manufacturers enjoy their ISO quality labeling.

Views

Types of slot screwdrivers There is quite a large amount.

  • Dielectric screwdrivers – This is a device consisting of a metal base with a tip and plastic or often rubber handle, which does not pass the current due to insulation. Such screwdrivers are used mainly by electricians who need to work in the environment included.

Slot screwdrivers: description, varieties and subtleties of application

Slot screwdrivers: description, varieties and subtleties of application

  • Conventional screwdrivers with reinforced steel handle, which is covered with plastic. They cannot be applied to work with the power grid (as they conduct the current), but they have different lengths, the thickness of the rod and can be used when working, for example, with metal or wood.

Slot screwdrivers: description, varieties and subtleties of application

  • Combined screwdriver – This is a device with built-in device indicator or dynamometer. Such a pointer signals the presence of current in the power supply, because such screwdrivers can be used both for installation work and for the repair of power grids. The dynamometer makes it possible to adjust the power of pressing to the screwed threaded connection, which is often necessary, for example, when assembling fragile materials.

Slot screwdrivers: description, varieties and subtleties of application

Slot screwdrivers: description, varieties and subtleties of application

  • Screwdriver with different nozzles. Such a screwdriver allows you to solve many tasks, its handle is a kind of penalty in which various tips are located, the set of which has more than 10 pieces. A small minus of such a device is the magnitude of the handle, so it is not always easy to use it, especially in a narrow space.

Slot screwdrivers: description, varieties and subtleties of application

  • Screwdriver “shock” or “power” It is used to unscrew highly tightened threaded connections. Her principle of operation is that after hitting it a hammer, the blow energy is sent to unscrewing the screw.

Basically, they all have quite large sizes, as they use them for work with large details.

Slot screwdrivers: description, varieties and subtleties of application

  • Screwdrivers “Probes” – with a transparent handle in which the LED or lamp is located, at the time of touching the tip to the wire under the voltage of the lamp lights up. Such a screwdriver makes it possible to define unmistakably, is there a voltage in the network. There are also screwdrivers that help determine the chain rupture or DC contrast.

Slot screwdrivers: description, varieties and subtleties of application

  • Precision screwdrivers There are a tip made for the most accurate ratio of the head of the small size screw. Used mainly to collect / parsing small devices: mobile phones, hours, tablets and similar devices.

Slot screwdrivers: description, varieties and subtleties of application

Slot screwdrivers: description, varieties and subtleties of application

  • Screwdrivers special – Used for work with self-stakes or screws with special requirements. For example: Protection against flipping, high effort when tightening a small head.

Used in machine-building or electronic products.

Slot screwdrivers: description, varieties and subtleties of application

  • Screwdriver with flexible rod, For work in hard-to-reach places.

Slot screwdrivers: description, varieties and subtleties of application

Slot screwdrivers: description, varieties and subtleties of application

But there is also a difference from the types of slots:

  • Direct Slot – one of the most common options;
  • Slot cruciform with a hole in the center of the working part for the guides;
  • Slot with the combination of straight and cross spline parts;
  • One of the options for the Cross Slice is a model that combines the cross and a square section;
  • model with the working part of the shape of the cross and 4 rays;
  • Square Slice;
  • Square slot with a hole in the center of the guide;

Slot screwdrivers: description, varieties and subtleties of application

  • Slot “Star”;
  • “Stars” option, but using a pin in the center;
  • the same “star”, but with shorter and less sharp rays;
  • five-pointed star with hole;
  • Hex slot or imbus key;
  • same hex key with a guide hole;
  • a screwdriver with a three-fold slot, a rare option;
  • Asymmetric cross slot, having a tightening stronger than other slots;

Slot screwdrivers: description, varieties and subtleties of application

  • Slot is similar with a double fork;
  • Eight-pointed star with a hole in the middle, a rare copy;
  • pentagonal slot, rare alternative hexagonal;
  • The twelve star was used on some Volkswagen cars;
  • a narrow view of the slot, used mostly different models of American electrical engineering;
  • Triangular slot applied in toys, electrical appliances or household appliances.

Slot screwdrivers: description, varieties and subtleties of application

Flat slot screwdorm dimensions may be the following:

Width, mm

2

2.5

3

3.5

4

4.5

five

5.5

6.0

6.5

Thickness, mm

0,3

0.4

0.4

0.5

0.5

0,6

0,6

0.8

0,6

0.8

0.8

0.8

one

one

1,2

one

1,2

Width, mm

7

eight

nine

10

12

13

fourteen

sixteen

18

Thickness, mm

one

1,2

1,2

1,6

1,4

1,6

1,6

2

1.5

2

2.5

2.5

3

How to choose?

Despite the fact that types of screwdrivers There are a large set, choose a screwdriver for the necessary work is very easy.

To begin with, it is necessary to decide on the upcoming types of work.

  • If there is a need for anti-fasteners’ anti-fasteners, it is worth paying attention to the “double-grinding” type screwdriver with a slot in the middle, this type of fastening will protect from unscrewing with other types of screwdrivers.
  • For work with electricity it is worth using dielectric, terminal or indicator screwdrivers.
  • For work with large details, fasteners or strongly swirling fasteners It is worth taking a reinforced screwdriver, it has an increased moment of twist due to hammer blows.

Slot screwdrivers: description, varieties and subtleties of application

  • In the case when you need to perform a large number of work, it will make it easier to store the tool, you can draw a look at the sets of screwdrivers, they will usually include a set of end nozzles, stakes with flat slots, “asterisks” bits, contractions of crusades pH and pz, hexagon bits of various sizes Several pieces each. Such a set is more expensive, but due to its multifunctionality, it justifies the means spent on it.
  • When choosing a tool, it is worth paying attention to the quality of the materials from which it is made, the quality of the junction of the handle with a metal rod. Mostly, the handles are made of plastic with inserts from rubber, due to this hand will well hold on to such a coating and cannot slip away at the most right moment.

Slot screwdrivers: description, varieties and subtleties of application

  • The diameter of the handle should be chosen on the basis of the upcoming work: the greater the size of the parts with which it should work, the wider should be handle, as it affects the torque. Screwdrivers intended for small parts are equipped with a small handle, to prevent damage or breaking the slot / part.

In order for the tip of your screwdriver for a long time, it is worth choosing those screwdrivers, the rod and the tip of which are made of high-alloyed or chromium steels with the content of vanadium.

  • Pick the size of the screwdriver under the size of the fasteners or a little more (one of the most common sizes among screwdrivers, it is tools with a width of the working slot 2 mm), since if the width of the stale is less than the size of the fastener, it will spoil the slot of the knurable part and deter itself.

Slot screwdrivers: description, varieties and subtleties of application

Subtleties of application

If you were correctly chosen the sizes of the slot under the dimensions of the parts, then the screwdriver will do everything herself. You should not try to unscrew the fastener with the connectors under the Cross screwdriver or the “Star” screwdriver, because it is not for nothing that there is a certain type of screwdriver under a certain fastener type.

To collect / parsing furniture It is recommended to use a tool with a hexagon type tip. The tip should sit tightly in the fastener head.

Slot screwdrivers: description, varieties and subtleties of application

If the fasteners rusted, then it is necessary to use, for example, solvents of rust, because if you try to unscrew a rusty bolt, the screw and the like details, you can “lick” a place under a screwdriver or damage it.

During operation, the metal part of the tool must be perpendicular to the location of the fastener. Try to avoid sketeering tool rod relative to the screw axis. Do not apply a damaged or spoiled tool.

Slot screwdrivers: description, varieties and subtleties of application

For work under voltage, use only dielectric screwdrivers, as when using other types of tools, there is a risk of getting a blow to the current. Do not expose tool heating to prevent damage to the rod or melting handle.

The main temperature range of such a tool: from -40 ° C to + 70 ° C.

Slot screwdrivers: description, varieties and subtleties of application

Read more about holes – the next video.

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