A Euroscrew is a fastening element, also called a confirmat, and has been known since the early 1990s. This screw is also called a Euroscrew or simply “Eureka”. The name comes from the Confirmat trademark, under which it is produced by the German company Hafele. In the USSR they learned about confirmation only in 1973.
A Euroscrew is a fastening element, it is also called a confirmat.
Another option is to drill the parts together.
The confirmat looks like a screw with a flat end, but with a countersunk head with six or four edges. It has threads with serrations at the bottom. In the upper part of the screw, near the head, there is no thread because it is unnecessary, since the confirmat is much thicker than the screw and the upper part of the thread does not play any role in the reliability of fastening. Euroscrews for furniture are made from high-strength carbon steel, which allows them to be easily removed from the material if used incorrectly.
The confirmat looks like a screw with a flat end, but with a countersunk head with six or four edges.
After connecting (pulling) the two parts together, they can be adjusted with a rubber mallet.
The advantages of a confirmat over an ordinary self-tapping screw are great, because it not only pulls the parts together, but also firmly holds them from lateral displacement. The connected parts on the screw will not sit tightly enough. Due to the fragility of chipboard, the use of screws does not meet expectations. Chipboard is a rather soft material and the reliability of the screw depends on the place where it will be screwed. Confirmat will hold securely and firmly even if there are pores in the chipboard.
It has threads with serrations at the bottom.
Using it, a small notch is made in the face and end.
Using Euroscrews, you get high reliability of the sections tightened with this fastener. The cost, in relation to any product, is a pittance. Confirmat is easy to install and can withstand heavy loads. The disadvantage is that the fastener is not closed, the cap is visible. It must be covered with a plug or sticker matching the color of the chipboard. Another disadvantage is that there is a certain amount of assembly required to assemble the furniture, often no more than three times, because if the furniture is disassembled frequently, the threads can break.
Euroscrews for furniture are made from high-strength carbon steel, which allows them to be easily removed from the material if used incorrectly.
To avoid chipping, a sheet of chipboard or plywood is placed on the reverse side.
How to connect?
To connect two parts made of laminated chipboard (the thickness of one sheet is 16 mm), a euroscrew is used. One of the most affordable and accessible methods today. To install it you will need:
- drill;
- drills 4.5 mm and 7 mm or “confirmed” drill;
- handle, square, hex key.
The advantages of a confirmat over an ordinary self-tapping screw are great, because it not only pulls the parts together, but also firmly holds them from lateral displacement.
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Otherwise, the confirmation will fall out, or, on the contrary, it will tear the chipboard, and you will ruin the furniture.
It is necessary to tighten two parts with a thickness of 16 mm. We retreat 8 mm along the vertical part of the part and draw a center line and put a dot. We make a hole using a drill with a diameter of 7 mm. On the second part we do the same, only we take a drill with a diameter of 4.5 mm. If you have a “confirmed” drill, the work is reduced significantly, but such a drill is quite difficult to find. All you need to do is make a hole and connect the two pieces together. The use of such a drill is rational in case of a large volume of work and repeated use. It is not advisable to buy such a drill for “one-time” use.
Confirmat will hold securely and firmly even if there are pores in the chipboard.
The main thing here is to maintain all sizes.
When assembling furniture, confirmat 6.4*50 is used. To connect the parts efficiently, the hole diameter should be 4.5-5 mm. and 50mm deep.
Using Euroscrews, you get high reliability of the sections tightened with this fastener.
To connect the parts efficiently, the hole diameter should be 4.5-5 mm. and 50mm deep.
Drill bit for furniture euroscrew
This fastener has a unique design, so for comfortable work with it, use a drill for a furniture euroscrew. As for the dimensions of such a tool, they are standardized. The products of different companies differ only in brand (quality), and the diameter of the drill for Euro furniture screws is determined by the size of the most popular confirmations.
It got its name from the Confirmat trademark, under which the German company produced fasteners.
To work with screws, different heads are used (phillips or hexagonal). Small screws (five millimeters) are tightened with a three millimeter key. Accordingly, for large sizes (seven mm), a four mm tool is suitable.
The main area of use of Euroscrews is the assembly of furniture structures.
The most popular euroscrew is 6.4 mm. A drill suitable for it is 4.5 (5) millimeters. Also in demand are tools with a diameter of 7 (or 4.5) millimeters - a confirmatory drill.
Does not destroy mounting holes, thus interior items can be assembled and disassembled.
The drill design consists of the following elements:
- the part directed under the screw thread;
- element for the smooth segment of the described screw;
- area intended for processing holes.
The disadvantages of Euroscrews include the fact that they are not hidden fasteners.
Important. The most popular European classification is: HSS 7×70 and further - ...7×50, 6.3×50, 5×50 (parts made of tool steel).
Confirmation sizes
The required parameters are usually calculated based on the external thread.
The disadvantage is that the fastener is not closed, the cap is visible.
When assembling furniture, confirmat 6.4*50 is used.
The most popular sizes of euroscrews:
- length: 40 (mm), thread diameter: 5 (mm);
- length: 50 (mm), thread diameter: 5 (mm);
- length: 40 (mm), thread diameter: 6.3 (mm);
- length: 40 (mm), thread diameter: 6.3 (mm);
- length: 40 (mm), thread diameter: 7 (mm);
- length: 50 (mm), thread diameter: 7 (mm);
- length: 60 (mm), thread diameter: 7 (mm);
- length: 70 (mm), thread diameter: 7 (mm).
The cost, in relation to any product, is a pittance.
It is not advisable to buy such a drill for “one-time” use.
The main thing here is to maintain all sizes. Otherwise, the confirmation will fall out, or, on the contrary, it will tear the chipboard, and you will ruin the furniture. The confirmation drill also makes a recess for the head. The holes are made strictly according to the markings and the drill must be held parallel to the surface. To avoid chipping, a sheet of chipboard or plywood is placed on the reverse side. An important point: when drilling the end of a part, the drill must be strictly perpendicular to its end, otherwise, if it deviates, the drill will move to the side and the part will be damaged. When drilling into the face of a part, the perpendicularity of the drill to the part is important. To avoid the drill coming off, use a regular awl. Using it, a small notch is made in the face and end. After connecting (pulling) the two parts together, they can be adjusted with a rubber mallet.
The connected parts on the screw will not sit tightly enough. Due to the fragility of chipboard, the use of screws does not meet expectations.
The use of such a drill is rational in case of a large volume of work and repeated use.
Another option is to drill the parts together. This method is not only fast, but also accurate. Only for this it is necessary to securely fix the parts using clamps. This way you save your time and speed up the assembly process.
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To connect two parts made of laminated chipboard (the thickness of one sheet is 16 mm), a euroscrew is used.
If you have a “confirmed” drill, the work is reduced significantly, but such a drill is quite difficult to find.
As a result, the use of confirmation is completely justified. No special tools are needed to install it. All you need to do is order the required number of confirmations. It is unlikely that you will get a high-quality screed the first time, but after making a couple of screeds, everything will work out. As they say, the eyes are afraid, but the hands do.
It is necessary to tighten two parts with a thickness of 16 mm.
On the second part we do the same, only we take a drill with a diameter of 4.5 mm.
It is unlikely that you will get a high-quality screed the first time, but after making a couple of screeds, everything will work out.
VIDEO: Confirmation
Modern furniture made of chipboard and MDF is often assembled using confirmatory screws, which among furniture makers are also called Euroscrews or Euroscrews. Before screwing them in, technological holes with strictly specified parameters are drilled in the plates. The process of preparing these holes will be discussed in this article.
The hole for the confirmation is drilled in the thickness of the first part and in the end of the second part, which are joined at a right angle. Along the length it should have a stepped difference in diameters. This is due to the design features of the Euroscrew. Its rod consists of a cylindrical smooth neck and a main threaded part. A hole of a smaller diameter is drilled for the thread, and a larger one for the neck. The fastener also has a countersunk head in the shape of a truncated cone, for which a seat is prepared. In practice, two hole drilling technologies are used.
Using three drills of different diameters
This method is suitable for small volumes of work, as it requires more time. Hole preparation is performed in three approaches:
First step
– drilling through two parts for the entire length of the Euroscrew. The diameter of the drill must be equal to the diameter of the screw body without taking into account the thread. This is done so that the threads can cut a counter thread in the material.
Second step
– expansion of the already obtained hole for the smooth part of the hardware, which should have a tight fit, but not too tight, so as not to split the material. Reaming is performed with a drill equal to the thickness of the neck and to a depth equal to its length.
Third step
– countersinking a hole to deepen the head into the material. This can be done with a drill of a larger diameter, but to obtain a high-quality result without chipping, it is better to perform this operation with a countersink.
Scope of application
Carpentry, and more specifically working with furniture, is the main area of use of products. But in woodworking there are also several vectors where it is possible to use products:
- furniture industry (both in large production volumes and small workshop assemblies);
- production of various items by folk craftsmen;
- repair of various items;
- installation of wood products (and other materials), etc.
Fasteners are made from high quality materials, often carbon steel.
Note. The products have been in use for more than twenty years, and remain at the early stages of popularity in the market. This indicates the success of this project.
Confirmation drill – three in one
Working with a special confirmat drill (cutter) is much easier, since it has a special stepped geometry, and the entire operation is performed in one pass. An additional advantage of using it is that it simultaneously chamfers the countersunk head of the hardware. In fact, it replaces two drills and a countersink of different diameters. In addition, the confirmatory cutter has an insertion part with a sharp tip, which ensures precise insertion of the tool and eliminates the risk of it being pulled to the side at the beginning of drilling.
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Dimensions of holes for confirmation
There are no GOST standards for confirmed screws; they are manufactured according to European standards 3E120 and 3E122 and have a fairly wide size range, represented by the following standard sizes: 5x40, 5x50, 6.2x50, 6.4x50, 7x40, 7x48, 7x50, 7x60, 7x70 mm.
The most common size is 6.4x50 mm
. To drill a hole for its thread, a drill with a diameter of 4.5 mm is used, and for the smooth part - 7.0 mm.
When working with euroscrews of other sizes, the following rule is adhered to: the diameter of the main hole (for the thread) must be equal to the diameter of the rod without taking into account the height of the thread. That is:
- 5 mm screw – 3.5 mm drill
- 7 mm screw – 5.0 mm drill
In order to prevent the risk of parts moving during drilling, it is necessary to firmly fix their position relative to each other. The easiest way to do this is with a corner clamp or other clamps.
A short review of the magic drill, if making furniture with your own hands is the most necessary thing. With it, the additive is much faster and more convenient. And the price is 141 rubles. not scary at all.
Features and advantages of the fastener
This screw has several names: furniture euro screw, euro screw, euro screw. It is also called confirmat by analogy with the German trademark of the same name. It would be more correct to use the term “single-element screed,” but it is inconvenient and rarely used.
Advantages of larch furniture board, its varieties
A confirmat is a screw that has a head with slots for a tetrahedron, hexagon or figured screwdriver . The conical shape of the rod and sharp serrations on the end make it possible to easily cut threads in prepared holes. A smooth surface is provided under the head.
Furniture euroscrews have a number of advantages:
- high speed of parts fastening;
- reliability of connection of various materials;
- low cost;
- the ability to disassemble assembled furniture without damaging the holes;
- ease of assembly without the use of special tools.
There are minor disadvantages:
- the need to hide the heads using plugs or overlays;
- impossibility of assembling and disassembling a piece of furniture more than 3-4 times.
Euroscrews are often compared to ordinary self-tapping screws. This is not entirely correct, since there are certain differences in working with them. Drilling preliminary holes for Euroscrews takes a lot of time, but this small drawback is more than compensated for by the durable clamping of the parts. Self-tapping screws tighten faster.
The design of the confirmat ensures reliable fastening even of porous materials.
