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How to pick up a dowel under the drill: basic rules and features. How to choose a drill under a dowel for fastening various items Dimensions of dowels for a self-tapping screw

    Believe the choice of dowels huge. What to choose in each case ??

    We offer on sale and keep a permanent warehouse stock of a wide variety of dowel species. Here are some and the most common designs of the dowel:

    Polypropylene dowel Pouring (with a mustache) is designed for fastening various elements using self-tapes and universal screws in concrete, brick, stone. Production material - polypropylene or nylon.

    Speaker dowel (such as "hedgehog") is also intended for fastening various elements into a concrete surface and have a peculiar struts for better fixation. Produced from polypropylene.

    Dowel for drywall "Driva"There are plastic and metal, have an appointment to fix various elements and structures in soft materials of plasterboard and drying sheets (GVL), porous concrete, using self-tapping and universal screws.

    Make this dowel from the zinc aluminum alloy or nylon. Metal drill due to the edge in the form of a first drill, as a rule, installed without prior drilling for it holes. A large thread on the outer surface of the dowel case, makes it possible to screw in the wall with a screwdriver.

    dowel nail Designed for rapid fasteners of windows, metal profiles, various sequins and guide, bar, baseboards, plywood, cable-channels, etc. in concrete, stone, brick. When you need to install them quickly and large. The dowel is completed with a nail having a pump for retaining in the form of reverse cones. The design of the dowel-nail is made of polypropylene or nylon, and a nail respectively from steel. Nail clogged with a hammer.))

    But in order to make a right and competently to make a choice, call the office of our company, leading experts will help you and give the most comprehensive information under the conditions of fasteners necessary for you.

    Standard nylon dowel suitable for any wall and used with a self-sample diameter from 2 to 16 mm. In the wall, the hole is drilled corresponding to the diameter of the dowel in which it is kept thanks to the alert to the tool, and when sinking, the dowel "tight" is attached to the walls of the opening.

    Dowel for aerated concreteFor such a dowel, a hole corresponding to the diameter is drilled. In the hole, the dowel is kept due to the scope under the action of self-press and its spiral ribs.

    Frame dowel It happens a length of 60 to 360 mm., Two main species - for a solid solid base and for hollow (slit) and soft materials. The elongated spacer part of the dowel, ensures the engagement immediately for several jumpers in the material with voids. As a rule, apply to fastening window and door boxes, as well as through layer of plaster and thermal insulation, various elements of the trim.

    Remote(adjusting) dowel, fixes the racks of the crate under the subsequent trim at some distance from the wall. Allows adjustment ranging from 0 to 3.00 cm relative to the base of the regimens of the crates in the fastener process due to the 2-part-shaped (1- base, 2 - rail) dowel and self-proof screws.


    Universal nylon dowel We are needed for fastening items to a hollow wall or another basis, the estimated presence of a hollow or empty space. In a hollow-based basis, a dowel is released and so fixed in it. In a continuous basis of concrete or brick, a dowel sampled, simply enters the tight contact with the walls of the hole. It serves for fasteners of wooden bars, suspended ceilings, metal rails, window and door frames, a doomle for facing plates, etc.

    12.05.2015

    Many faced the problem of the recruitment of a dowel to a self-sufficiency, when it is necessary to secure some design to concrete, brick, aerated concrete or plasterboard with a self-building, but without a dowel in this case can not do.


    It is necessary to take into account the diameter and the length of the self-press, and the diameter and the length of the dowel, and the thickness of the material attached. If the dowel is a diameter of the laid less, then it will break it with it, if more, then the selflessness does not disperse it, and it will not be a reliable installation, the same will be if the touch does not reach the end of the dowel. So how, still correctly pick up the selfselography and dowel?


    You need to start the selection from a dowel, from its size (diameter, length). The larger the size of the dowel, the greater the load he can withstand. The smallest diameter is 4 mm and 5 mm, designed for a low load, 6 mm and 8 mm per middle, 10 mm and 12 mm per large load, 14 mm and 16 mm for very large loads, for fixing scaffolding, etc. You should also take into account the density of the material in which the dowel will be. The more dense material, the greater the load will be able to withstand a dowel, of the same size.


    After we picked up the desired size of a dowel, you can pick up a self-sample to him.


    For a dowel with a diameter of 4 mm, a sketch of 2 mm diameter is suitable.

    For a dowel with a diameter of 5 mm, a sketch of 2.5 mm diameter is suitable. (from 2 mm to 3 mm.)

    For a dowel with a diameter of 6 mm, a sketch of 4 mm diameter is suitable. (from 3.5 mm to 4.5 mm)

    For a dowel with a diameter of 8 mm, a 5 mm diameter is suitable. (from 4.5 mm to 5.5 mm)

    For a dowel with a diameter of 10 mm, a sketch of 6 mm diameter is suitable. (from 5.5 mm to 6.5 mm)

    For a dowel with a diameter of 12 mm, a sketch of 8 mm diameter is suitable. (from 6.5 mm to 8.5 mm)

    For a dowel with a diameter of 14 mm, a diameter of 10 mm is suitable for a diameter. (from 8.5 mm to 10.5 mm)

    For a dowel with a diameter of 16 mm, a diameter of 12 mm is suitable for a diameter. (from 10.5 mm to 12.5 mm)


    Well, we picked up the desired size of a dowel, picked up the necessary diameter of the self-drawing to it, now just left to choose the desired length of self-reserves.


    For this, the length of our dowel is taken, the thickness of the material is attached and it turns out the necessary minimum length of self-pressing. The thickness of the fastened material should not be more than 35% in loose bases, and not more than 60% in dense bases from the length of the dowel.


    Self-tapping screw can get out of a dowel, it's not scary, the main thing is that he must have passed until the end of the dowel and completely revealed it, for reliable installation, if it is screwed up to the end, then the dowel can be shuffled, and the installation will not be reliable. Drill a hole under a dowel need a little more than its length and the same diameter.


    For example: we need to consolidate the phaneer with a thickness of 20 mm to the concrete floor. To do this, we take a dowel 8x50 (8 mm dowel diameter, 50 mm of its length), and to it Self 5x70 (5 mm diameter of self-tapping screw, 70 mm of its length). For drilling, we will need a car 8x110 (8 mm diameter, 110 mm total length of the borax, 80 mm working part length). You need to drill to a depth of at least 60 mm. After drilling, the hole is cleaned from dust, the dowel is inserted, then the self-tapping screw over the phaneer is screwed into it.

    Table of self-conformity and dowels


    Double diameter (mm.)

    Length of a dowel (mm.)
    The thickness of the attached material (mm.) Size of self-proof (mm.)
    5 25 5 3x30
    5 25 10 3x35
    6 25 5 4x30
    6 30 5 4x35
    6 30 10 4x40
    6 35 10 4x45
    6 35 15 4x50
    6 40 10 4x50
    6 40 15 4x60
    6 40 20 4x60
    6 50 10 4x60
    6 50 15 4x70.
    6 50 20 4x70.
    8 30 5 5x35
    8 30 10 5x40
    8 40 10 5x50
    8 40 15 5x60
    8 50 10 5x60
    8 50 20 5x70.
    8 60 10 5x70.
    8 60 20 5x80
    8 60 30 5x90.
    8 80 10 5x90.
    8 80 20 5x100
    8 80 30 5x120
    10 50 10 6x60
    10 50 20 6x70
    10 60 20 6x80
    10 60 30 6x90.
    10 80 20 6x100
    10 80 40 6x120
    10 80 60 6x140
    10 100 40 6x140
    10 100 50 6x150
    10 100 60 6x160
    12 70 10 8x80
    12 70 20 8x90.
    12 70 30 8x100
    12 100 20 8x120
    12 100 40 8x140
    12 100 60 8x160
    12 120 40 8x160
    12 120 60 8x180
    12 120 80 8x200
    14 75 25 10x100
    14 75 35 10x120
    14 100 20 10x120
    14 100 40 10x140
    14 100 60 10x160
    14 135 25 10x160
    14 135 35 10x180
    14 135 45 10x180

    In this article, we showed you how to choose the self-tapping screw under the dowel. If you still have questions, contact our online storeKrep-komp, by phone, email, Skype. Our managers will gladly advise you on all issues!

    Repair, current construction work and improvements in the house that occur in each person requires careful and accurate execution according to the rules, even if it is a trifle. Especially when something is being done for themselves, then you want to work performed by the work as long as possible.

    This also applies to knowledge about how to choose a dowel under the drill to create holes. Such questions arise when you need to fix various items on the wall, for example, furniture, painting, corners, profile.

    What is a dowel?

    Products intended for the implementation of a deaf fastening of surfaces are called dowels. The clutch is carried out in 3 stages:

    1. Drill a hole.

    2. A dowel is installed as an intermediate link into the hole.

    3. A fastener is screwed into the dowel or driven (screw, screw, anchor).

    As a rule, a dowel is a plastic or metal cylinder having spacer or clamping paws along an external perimeter.

    Before selecting the drill size under the dowel, it is necessary to figure out what type of fastening will be, and determine its purpose. An important role is also played by the form of a dowel used.

    Types of dowels

    The so-called progenitors of modern dowels were wooden plugs that were mounted in the walls, screwed screws in them, thereby creating a reliable fastening. Today, the following types of dowels exist:

    Polypropylene spacers - for mounting self-tapping screws, concrete or brick;

    Dowel for drywall (cleaned) from metal or plastic;

    Dowel-nail - propylene or nylon, is used for non-response parts, such as plinths, cable channels;

    Universal nylon dowel (still called a chopper);

    - "Butterfly" - there is both metal and plastic, serves to suspend heavy objects on hollow systems;

    Anchor dowel - made of metal, designed to fasten the responsible and heavy elements. Since we are talking about how to choose a dowel under the drill, it is important to note that the anchor due to its rigidity can not enter the hole, since the drill has a property of age as

    Dowel-fungus - has an enlarged height and diameter of the head, used when mounting the insulation (mineral wool, polystyrene) on the walls.

    Conformity of the dimensions of the dowel, self-press and holes

    The diameter of the dowel and the drill is indicated by the marking on each part. There is a principle according to which the dubel diameter must correspond to the diameter of the drill.

    It is not difficult to choose a dowel under the drill, and the size of the self-building must be taken into account. The size of the sizes is presented in the table below.

    Features of walls

    Depending on the material of the wall, the diameters of the dowel and the borax may vary:

    In concrete and brick walls they are equal;

    In porous and loose walls, the diameter of the dowel should be 1 mm larger than the drill diameter.

    Unreliable surfaces (for example, from plaster or wall in old houses) can not be drilled by a shock way.

    Basic rules for installing dowels

    There are some subtleties of work that will make it possible to choose the drill under the dowel. How to observe them:

    1. The length of the drill must be more than a dowel by 3 mm. This is done for sufficient depth of the hole: it can clog dust or residues of the material, and then the dowel will not enter it completely.
    2. For the convenience of preparing a large diameter hole, it is worth using a smaller drill. For example, you need to screw the screws ø10. Then, for the selection of a dowel under the drill, as seen from the table, a hole and part Ø12 are used. The hole is obtained by drilling the ø10 brown, then changing it on Ø12. This method allows to obtain the desired diameter with smooth edges.
    3. For fastening light items, you should use a dowel of small diameter and length, with increasing weight and dimensions of objects should increase the size of the dowel.
    4. When scoring a dowel-nail to the wall should be removed from it.
    5. For high-quality and easy drilling, it is better to choose winning borants.

    12.05.2015

    Many faced the problem of the recruitment of a dowel to a self-sufficiency, when it is necessary to secure some design to concrete, brick, aerated concrete or plasterboard with a self-building, but without a dowel in this case can not do.


    It is necessary to take into account the diameter and the length of the self-press, and the diameter and the length of the dowel, and the thickness of the material attached. If the dowel is a diameter of the laid less, then it will break it with it, if more, then the selflessness does not disperse it, and it will not be a reliable installation, the same will be if the touch does not reach the end of the dowel. So how, still correctly pick up the selfselography and dowel?


    You need to start the selection from a dowel, from its size (diameter, length). The larger the size of the dowel, the greater the load he can withstand. The smallest diameter is 4 mm and 5 mm, designed for a low load, 6 mm and 8 mm per middle, 10 mm and 12 mm per large load, 14 mm and 16 mm for very large loads, for fixing scaffolding, etc. You should also take into account the density of the material in which the dowel will be. The more dense material, the greater the load will be able to withstand a dowel, of the same size.


    After we picked up the desired size of a dowel, you can pick up a self-sample to him.


    For a dowel with a diameter of 4 mm, a sketch of 2 mm diameter is suitable.

    For a dowel with a diameter of 5 mm, a sketch of 2.5 mm diameter is suitable. (from 2 mm to 3 mm.)

    For a dowel with a diameter of 6 mm, a sketch of 4 mm diameter is suitable. (from 3.5 mm to 4.5 mm)

    For a dowel with a diameter of 8 mm, a 5 mm diameter is suitable. (from 4.5 mm to 5.5 mm)

    For a dowel with a diameter of 10 mm, a sketch of 6 mm diameter is suitable. (from 5.5 mm to 6.5 mm)

    For a dowel with a diameter of 12 mm, a sketch of 8 mm diameter is suitable. (from 6.5 mm to 8.5 mm)

    For a dowel with a diameter of 14 mm, a diameter of 10 mm is suitable for a diameter. (from 8.5 mm to 10.5 mm)

    For a dowel with a diameter of 16 mm, a diameter of 12 mm is suitable for a diameter. (from 10.5 mm to 12.5 mm)


    Well, we picked up the desired size of a dowel, picked up the necessary diameter of the self-drawing to it, now just left to choose the desired length of self-reserves.


    For this, the length of our dowel is taken, the thickness of the material is attached and it turns out the necessary minimum length of self-pressing. The thickness of the fastened material should not be more than 35% in loose bases, and not more than 60% in dense bases from the length of the dowel.


    Self-tapping screw can get out of a dowel, it's not scary, the main thing is that he must have passed until the end of the dowel and completely revealed it, for reliable installation, if it is screwed up to the end, then the dowel can be shuffled, and the installation will not be reliable. Drill a hole under a dowel need a little more than its length and the same diameter.


    For example: we need to consolidate the phaneer with a thickness of 20 mm to the concrete floor. To do this, we take a dowel 8x50 (8 mm dowel diameter, 50 mm of its length), and to it Self 5x70 (5 mm diameter of self-tapping screw, 70 mm of its length). For drilling, we will need a car 8x110 (8 mm diameter, 110 mm total length of the borax, 80 mm working part length). You need to drill to a depth of at least 60 mm. After drilling, the hole is cleaned from dust, the dowel is inserted, then the self-tapping screw over the phaneer is screwed into it.

    Table of self-conformity and dowels


    Double diameter (mm.)

    Length of a dowel (mm.)
    The thickness of the attached material (mm.) Size of self-proof (mm.)
    5 25 5 3x30
    5 25 10 3x35
    6 25 5 4x30
    6 30 5 4x35
    6 30 10 4x40
    6 35 10 4x45
    6 35 15 4x50
    6 40 10 4x50
    6 40 15 4x60
    6 40 20 4x60
    6 50 10 4x60
    6 50 15 4x70.
    6 50 20 4x70.
    8 30 5 5x35
    8 30 10 5x40
    8 40 10 5x50
    8 40 15 5x60
    8 50 10 5x60
    8 50 20 5x70.
    8 60 10 5x70.
    8 60 20 5x80
    8 60 30 5x90.
    8 80 10 5x90.
    8 80 20 5x100
    8 80 30 5x120
    10 50 10 6x60
    10 50 20 6x70
    10 60 20 6x80
    10 60 30 6x90.
    10 80 20 6x100
    10 80 40 6x120
    10 80 60 6x140
    10 100 40 6x140
    10 100 50 6x150
    10 100 60 6x160
    12 70 10 8x80
    12 70 20 8x90.
    12 70 30 8x100
    12 100 20 8x120
    12 100 40 8x140
    12 100 60 8x160
    12 120 40 8x160
    12 120 60 8x180
    12 120 80 8x200
    14 75 25 10x100
    14 75 35 10x120
    14 100 20 10x120
    14 100 40 10x140
    14 100 60 10x160
    14 135 25 10x160
    14 135 35 10x180
    14 135 45 10x180

    In this article, we showed you how to choose the self-tapping screw under the dowel. If you still have questions, contact our online storeKrep-komp, by phone, email, Skype. Our managers will gladly advise you on all issues!

    When repairing self-repair is an indispensable consumable material. With their help, you can consolidate any design on a specific surface. For reliable fixation of self-pressing in the material it is also necessary to use a dowel. The dowel is fixed at the base of the material, then the self-tapping screw is screwed into it. Dowels are plastic and metal. They always have a strut-up in their design - an element that increases the clutch of fasteners with the material.

    Dowel selection parameters for self-tapping screw

    For reliable attachment, you should pick up a dowel under the self-sufficiency accurately and correctly. It is necessary to take into account the size of the self-drawing and dowel, as well as the thickness of the fixed product. If the diameter of the self-drawer exceeds the diameter of the dowel, the self-sufficiency will break the dowel. If, on the contrary, the dubel diameter will be larger than the diameter of the self-press, the struts will not completely open and the fastening will not be strong enough. The same thing will happen if the self-tapping screw is less than the dowel used.

    The choice of dowels must begin with its dimensional characteristics. Large-size dowels are capable of withstanding heavy loads. Dowels of different diameters are designed for a certain load:

    · 14 mm and above - very large load.

    In addition to dimensional characteristics, it is necessary to know the density of the material in which the dowel is fixed. Dowels of the same size withstand heavy loads in more dense materials. Also, the dowel is chosen depending on the purpose of use and fixed structures.

    Types of dowels and self-tapping screws

    There are the following types of plastic and metal dowels:

    · Pouring. Dowl data is produced and used for fixation at concrete bases. The design of such a dowel provides 2 or 3 struts. Specked dowels are used to fasten the lung details. Such a dowel can be perfectly fixed in a loose wall.

    · Dowels of this species are made of metal, equipped with a large carvings and a special drill. It helps to avoid pre-drill holes before installing. Not intended for large loads.

    · Dowel nail . It consists of a plastic dowel and a nail of steel for increased fastening strength. When driving a nail dowel firmly fixed in the material. This species is used to fix profiles from metal and plinths.

    · Anchor. Such dowels are made of metal. They have a cylinder form. The base of the cylinder is a nut. When twisting the screw, the nut opens the struts in the hole, which ensures solid fixation. Used when fixing massive components.

    · Dowel-butterfly.We are necessary for hanging overall products. At the base, like an anchor dowel, there is a nut. When twisting the screw, the nut presses on the struts, which rest in the inner surface of the product. It is also good for fastening in a loose wall, like a relaxed dowel.

    · Dowel-fungus. Dowels of this species are indispensable for thermal insulation. With the help of them, the insulation on the surface of the buildings is fixed.

    After the choice of the desired type of dowel is made, it is necessary to choose the corresponding self-sufficiency. With the help of a special table of comparison of the sizes of a dowel and self-pressing you can find out how to pick up a dowel to a self-tapping screw.


    Double diameter (mm)


    Length of a dowel (mm)

    The thickness of the attached material (mm)

    Sale of self-proof (mm)

    For example, you have a dowel with a diameter of 10 mm and a length of 50 mm. The thickness of the fixed material is 10 mm. To find out how to choose a dowel to a screw of the desired size, refer to the table. Under the parameters specified, our dowel is suitable under the Self 6x60, as can be seen from the table. When fixing structures with a minimum material thickness, a dowel is suitable for a 3.5 mm x 25 mm solessel.

    Using the above material, it is possible to choose a dowel under the self-sufficiency without unnecessary work and perform the necessary work qualitatively and professionally.