Furniture confirmations: dimensions, drills and holes for euro screws (euro screws)

Features and benefits of the fastener

The confirmat shape resembles an ordinary screw with a tapered (thickened) part under the head. An obligatory element of their structure is a protective coating (brass, zinc or nickel). The screws are made of carbon steel. This specificity of their structure makes it possible for products to have flexible properties.

In order for the products to have a neat appearance, they have to be hidden with the help of special plugs or plastic overlays.

The size of the furniture confirmations can be as follows:

• 5x40 and 5x50;
• 6x50, 6.3 by 40 (by 50);
• 7x40, 7x50, 7x70, etc.

The sizes of confirmations are as follows: 5x40, 5x50, 6.3x40, 6.3x50, 7x40, 7x50, 7x60, 7x70 mm.

The advantages of the products are the following:

• Functionality. Perfectly worked out the thread for step-by-step cutting.
• Plastic. The Euro screw has the ability to bend, but does not break like ordinary screws. It is easy to install it again if it was installed incorrectly the first time.
• Many tools can be used when working with fasteners: drill, wrench, screwdrivers, etc.
• Reliability of structures mounted with these parts. Fastening fittings and frame materials.
• Widely used for the following materials: wood, plywood, chipboard, fiberboard, MDF, etc.
• The ability to use screw caps, which completely hides the view of the metal from the eyes. This gives the furniture an aesthetic appearance.
• Ease of installation. Working with these parts significantly speeds up the work.

The most common are single-piece ties with a thread diameter of 7 mm and a length of 50-70 mm.

Typically, the simplicity of design also makes this product affordable for most consumers.

Design features

Euro screws for joining furniture parts are a one-piece tie. In fact, they are the same screws, only their body is more massive. The thread for confirmations has a wide pitch, the head is elongated, the head has a secret design. The tool slots are different. Some are suitable for a curved screwdriver, others for a hex wrench. Unlike other hardware, the ends of the Euro screws have a straight cut with a round section.

The use of a hexagon confirmation is considered more practical and reliable. After connecting the parts together, you can additionally tighten them using a hex bit, screwdriver, drill or special wrench. Fasteners for a Phillips screwdriver cannot provide such reliable fastening, since it will not be possible to tighten the parts tightly. Subsequently, this will affect the strength of the structure, it can loosen and lose stability.

Confirmates are used to connect parts made from:

• MDF;
• Chipboard;
• wood;
• plywood.

Euro screws can replace standard angle brackets. They easily withstand all bending loads. This feature allows confirms to perform not only fastening, but also a frame-forming function. To mask the fasteners, plastic plugs (diameter 12 mm) are used, similar to the general color of interior items. They are made of plastic. Also on sale there are special round-shaped stickers. The thickness of the plugs does not exceed 0.4 mm. They can be chosen in the same shade as the furniture itself. Interior items acquire a finished look, euro screws on them become invisible. Self-adhesive elements are more common, they are convenient, easy to use.

Description

The drill is intended for drilling holes with a hand-held power tool for furniture screed (confirmation) in chipboard, MDF, wood, plywood, soft plastics and other materials. Allows you to drill holes in parts that are fixed to each other in various positions using corner clamps, vices, etc. Available for all types of furniture screed 5 x 50, 6.4 x 50, 7 x 50, 7 x 70. Each type of drill clearly corresponds the size of the used confirmation. The drill is made of high quality HSS steel. The rotational speed of the drill during the drilling process is 2500-4000 rpm.

DRILL DESIGN FEATURES

Furniture screed drills (confirmation)

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Recommendations

There are a number of important rules and guidelines that need to be taken into account.

1. To prevent the drill from moving sideways from the very first minutes of the drilling process, it is required to make a notch in the middle of the planned hole. This is done by means of an awl, however, other sharpened objects will also work: a self-tapping screw, a nail, and the like.
2. Reduce RPM. Drilling wood should be carried out at low speeds of the electric drill.
3. You can reduce or minimize the formation of chips on the bottom surface of the product when drilling through and through by performing the work using one of the following methods:

• we create a hole of a through type and a small diameter, then we drill through it to the center on both sides with a cutting tool of the required diameter;
• to the side where the drill should come out, press the flat substrate made of wood or fiberboard with clamps, drill a hole, remove the substrate.

4. The verticality of the drill is ensured by the use of a guide for the electric drill; for workpieces with a cylindrical shape, a special jig can be used, which carries out both the centering of the drill and the verticality of drilling.

If the drilled hole is too large in diameter, you have the opportunity to restore it in the following way: drill the hole to a larger diameter, then insert a wooden chopik (wooden dowel) of a suitable diameter into it and place it on the adhesive. Let the adhesive harden and align the top edge of the chopstick flush with the plane using a chisel, then re-drill the hole in the same place.

How to make a hole for the confirmation, see below.

Installation rules

Before installing the fastener, you must make the appropriate markings. For these purposes, there are special conductors or templates. They significantly speed up the process and make the work more accurate. Conductors eliminate marking errors and are used mainly for large volumes of work. If you need simple markup, you can do without templates. If all stages of work are done correctly, the connection of parts in this way will be the most reliable, durable and at the same time convenient.

In order to correctly install the confirmation, you need to know some of the nuances regarding the material for the manufacture of furniture and the design features of the fastening element. Three holes need to be drilled: for the threaded part, for the smooth head and for the head. For each of them, drills of different diameters are selected. Drilling several holes significantly increases the connection time of the elements.In this case, a special drill comes to the rescue, designed specifically for the Euro screw. It is made in such a way that a hole is drilled in one go to fit all three parts of the one-piece tie.

Installation process:

1. The first step is to drill a hole for the one-piece tie. To do this, use a drill with a diameter of 4 mm to 7 mm;
2. Step cutters will make it easier to make holes for the cap. The cutters are attached to the drill. The use of this particular method contributes to the simultaneous formation of the correct hole in two elements at once. The diameter of the hole for the Euro screw, or rather for the threaded part, is 5 mm, for the head - 7 mm;
3. A through hole is made on the first part, where the smooth head and head of the Euro screw will be placed;
4. In another part, a blind hole is drilled, in which an internal thread is formed by drilling the threaded part of the confirmat at the end;
5. For a more accurate connection and prevention of shear, the elements are firmly fixed with special devices (furniture vise, clamping machine and others).

Euro screw is a reliable modern hardware, which greatly simplifies the process of assembling body structures. In this case, you can abandon unsightly corners and other familiar fasteners. Correct installation ensures stability and durability of furniture elements, prolongs their service life.

Making the markup

Making a hole from the end

We drill the front part

Installing fasteners

Installation rules

For many who first encounter confirmations, a natural question arises about which holes to drill for the used Euro screw and how this procedure is generally performed.

There should be no problems with how to drill holes if you have already worked with a drill and imagine the principle of its operation.

Before installing the confirmation in the furniture case, it is required to make the appropriate markings. To apply it, you will need a jig or a template. With their help, you can significantly speed up work, as well as achieve a high level of accuracy. If you are doing simple markup, you will not need a conductor (template).

For the correct installation of the confirmation, it is recommended to find out in advance about the material of the furniture itself, as well as about the design features of the euro screw. A total of 3 holes are needed:

A drill of the corresponding diameter is used for each hole. It is the time it takes to create several holes that make you spend much more time assembling furniture.

But there is a solution. It is presented in the form of a special drill, which is intended specifically for confirmations. Finding it in Leroy Merlin or in any other furniture accessories store will not be difficult. The peculiarity of the special drill is that it allows you to prepare 3 different holes at once in one go. This is due to the design of the drill itself.

Drilling and installation

Step by step we will consider the procedure for drilling a hole with the subsequent installation of a confirmation in it.

To assemble furniture using Euro screws, you need to prepare special holes. The process involves the following actions:

• First, a hole is drilled for the screed (confirmation). Drills with a diameter of 4 to 7 millimeters are often used here;
• Due to a stepped cutter or just a special drill for a confirmation, it is possible to significantly facilitate the procedure;
• The cutter is fixed to the drill. This makes it possible to correctly form a hole in two components at the same time;
• For the threaded part of the confirmation, the diameter should be 5 millimeters, and the diameter of the hole for the head itself is already 7 millimeters;
• On the first furniture element, a through-type hole is made, since the smooth part of the special head and the hat itself will be located there;
• In the second part, a blind hole is made, where the internal thread is formed by drilling the threaded part of the Euro screw in the end part;
• To ensure the most accurate connection, furniture elements can be fixed using machines, furniture vices and other devices. This prevents possible shifts.

When drilling, try to use a drill or screwdriver that can rotate at the highest adjustable speed possible. This will ensure the creation of the most accurate, even and quality holes.

It is difficult to imagine the assembly of modern cabinet furniture without the use of confirmations. This is the most modern type of hardware that allows you to significantly speed up and simplify the furniture assembly process.

The use of confirmations allows you to abandon corners, screws and other fasteners that do not have the most attractive appearance, and are also inferior to the Euro screw in terms of reliability.

Confirmation is not just a whim or a fashion. This is a truly versatile and effective solution in furniture production. And we are in many ways lucky that now we have the opportunity to assemble furniture with the help of such fasteners.

What do you think about confirmations and have you had to work with them? Who assembled ready-made furniture and used such fasteners? And who had to make the holes for the confirmation himself? Share your experiences and opinions.

Thank you all for your attention! Subscribe, leave comments and ask relevant questions!

Basic dimensions

There is no GOST Euro screw - they are made following such European standards as 3E122 and 3E120. They have a very extensive list of sizes: 5x40, 5x50, 6.2x50, 6.4x50, 7x40, 7x48, 7x50, 7x60, 7x70 mm.

When working with the rest of the confirmations, the following principle is observed: the proportionality of the diameter of the hole for the section with protrusions and the diameter of the rod, while the height of the thread is not taken into account. In other words:

• Euro screw 5 mm - drill 3.5 mm;
• Euro screw 7 mm - drill 5.0 mm.

The assortment selection of Euroscrews is not limited to the presented list. There are even such unusual sizes as 4 × 13, 6.3 × 13 mm.

The use of confirmations without taking into account their characteristics will certainly lead to trouble. Without much effort, you can spoil a large part by choosing the wrong fastener

The choice of thread diameter is of particular importance. Thick components of the fastener tear soft materials, this often happens when working with chipboard

The length must guarantee the strength of the end attachment.

How to drill a hole for the confirmation

The confirmation is screwed into a previously prepared hole, so the question of how to drill such a hole is quite relevant. This will require the following tools and materials:

• screwdriver or electric drill;
• a bit of the appropriate size;
• drill for confirmation;
• a measuring tool, which can be used as a ruler (or construction tape);
• pencil;
• awl.

To facilitate marking and maintaining a strictly perpendicular position of the drill, use a template for drilling holes for confirmation

Hole dimensions for Euro screws

For the assembly of furniture, Euroscrews are usually used, the dimensions of which are 6.4x50 mm. To make holes for such a confirmation, the outer thread diameter of which is 6.4 mm, and the cross-sectional dimension of the screw body is 4.4 mm, a drill with a diameter of 4.5–5 mm is used. The holes for this type of confirmation must be drilled to a depth of at least 50 mm. If the hole diameter is greater than the specified value, then the Euro screw simply will not hold, if less, it can break the furniture element into which it is screwed.

The stepped drill is selected based on the dimensions of a specific model of Euro screw

The drill, with which the holes for the confirmation are made, must be equipped with a special working head.On the one hand, it prepares an enlarged hole for the screw neck, on the other, it countersinks the place where its head will be placed. A conventional drill can be used to place the confirmation, but in this case it is necessary to prepare places for the neck of the fastener and its head.

Drilling location marking

The reliability and quality of the connection made using confirmations largely depends on the accuracy of the marking of future holes for them. On the element that will be superimposed on the end of another element of the furniture structure, two types of markings are made:

• drilling depth (5–10 cm);
• the center of the future hole (if the thickness of the part to be joined is 16 mm, it should be at a distance of 8 mm from the edge of the plate).

Drilling pattern for Euro screws

To mark the drilling sites as accurately as possible, you can use the following simple technique: in the superimposed part, after preliminary marking, a through hole is made through which, by attaching the first part to the second, a rotating drill marks the location of the second hole for the euroscrew.

Making holes

In order to make the holes for the placement of confirmations as efficiently as possible, it is advisable to follow the recommendations below.

1. Before drilling the part, it is necessary to put a piece of unnecessary chipboard under it: this will avoid the appearance of chips at the exit of the hole being created.
2. The formation of places for the neck and head of the confirmat in an already made hole can be done by holding the workpiece on the weight.
3. When drilling both in the layer of the part and in its end face, the drill is placed strictly perpendicularly. This will allow you to get a high-quality result and not damage the part.
4. When drilling two parts at the same time, they must be securely fixed in the desired position, for which you can use clamps and other clamping devices. This is the most accurate and fastest way to create confirmation holes.
5. When drilling holes for dowels, it is advisable to equip the used tool with a depth gauge, which will allow not to spoil the workpieces by drilling them through.

Design features and benefits of use

Confirmates are screws equipped with a countersunk head, in which there are two types of slots. Due to the presence of these slots, Euro screws can be tightened with either a four- or a hexagonal screwdriver. The shaft of such a screw has a blunt end, and a wide protruding thread is applied to its working part. The lower threads are designed to cut threads in a pre-drilled hole, so they are tapered and serrated. Under the head the Euro screws have a smooth (no thread) surface.

Significant parts of the confirmation

All confirmations have a protective coating of zinc, brass or nickel, and they are made from high quality carbon steel. The use of such steel makes it possible to give the Euro screws a high plasticity, due to which they bend, but do not break. The high plasticity of the confirmations ensures their easy removal from the furniture, even if their installation is not performed correctly.

The use of confirmations allows you to combine furniture elements made not only from natural wood, but also from the products of its processing - MDF and chipboard. According to the ratio of the outer diameter of the thread and the length of the screw, fasteners of this type are presented on the modern market in the following standard sizes: 5x40, 5x50, 6.3x40, 6.3x50, 7x40, 7x50, 7x60 and 7x70 mm. At the same time, the most popular are euro screws, the length of which is 50 and 70 mm, and the thread diameter is 7 mm.

Sizes of common confirmations

There are varieties of confirmations produced with a regular hat. When using them, additional is required. Certain categories of confirmations are made with a special tooth located under the head.The purpose of such a tooth is to form a chamfer when mounting the fastening element, in which its head will be located.

If the confirmation hat is on the front side of the furniture product, it can be disguised with a decorative plug or sticker, which any hardware store offers in a large assortment today. When choosing such decorative elements, one should take into account not only the size of the Euro screw head, but also the texture and color of the furniture design elements that are connected with it.

The diameter of the fixing decorative protrusion of the plug must match the size of the recess in the confirmation head

Types of confirmations and holes for them

Outwardly, the Euro screw resembles a screw, from which it fundamentally differs in the diameter and shape of the cut tooth. This design feature makes it possible to increase the area of ​​contact with the body of the part to be fixed several times. As a result, the reliability of the connection is significantly increased.

One confirmatory replaces 3-4 screws of the same length. For laminated chipboard furniture, the indicators are even more impressive. The middle of the leaf is the loosest part of the material. A thin screw is not able to be securely fixed. Due to the larger diameter, the Euro screw captures harder layers of chipboard and it is no coincidence that manufacturers definitely prefer it.

Manufacturers offer a range of different sizes for different types of connections. Not all models can be found in the store. Some are used for special purposes only. They can be ordered or purchased from specialized retail outlets.

The way the confirmation is twisted depends on the shape of the head. It can be hex or cruciform. For small diameter Euro screws (5 mm), use a 3 mm key, and for large products (7 mm) 4 mm.

Drill dimensions are determined in accordance with the table. Depending on the material, the hole for the thread is made either 3.5 mm or 4.5-5 mm. For the head of the confirmation, a diameter of 5 mm and 7 mm, respectively, is required, depending on the brand.

Device manufacturers

The correct name for the fastener is single piece tie. They use this term to fill in data when ordering, to draw up reporting documentation at specialized enterprises. In everyday life, it is more common to hear other names, for example, "Euro screw", "Euro screw".

The word Confirmat originated from the trade name of the company Hafele from Germany Confirmat. This category of fasteners appeared in the 70s of the last century, but they gained real popularity in the 90s. Since then, products have been produced by many domestic and foreign manufacturers, including the Hafele company, which has been successfully operating to this day.

The demand for products is covered in large volumes by Russian enterprises. These are ZAO Izhevsk Furniture Accessories Plant FMS, AO Metallist and many others. Products of Chinese manufacturers are widely represented on the market, the quality of which is not always up to the mark. But one of the oldest enterprises in China, Haining Yicheng Hardware Co., Ltd. you can trust.

Design features

To even better understand what it is and how furniture confirmations look like, you can take a look at the photo and get acquainted with the design features.

Before us is a screw, which has a countersunk head with a hole (slots) for a hexagon and a square. With its help, the Euro screw is twisted and untwisted when assembling and disassembling furniture. This combination of slots allows you to simultaneously use a hexagon and a square when tightening furniture elements.

The rod has a blunt end, and a wide pitch thread is used on the working surface.The lower threads of the existing thread are used to cut threads in pre-prepared holes. Because of this, their shape is conical, and there are also sharp notches.

Under the head itself there is a smooth and rather wide surface, devoid of threads. That is, structurally, you can distinguish the head, cap and threaded part.

All confirmations have a zinc, nickel or brass protective coating. The Euro screws themselves are made on the basis of a high-carbon type of high quality steel. This provides the structure with a high level of elasticity. As a result, the Euro screw bends, but does not break. Plasticity plays a role in the removal of screws in situations where the installation has not been carried out correctly.

Confirmates are widely used when joining furniture components made of wood, chipboard, MDF, etc.

There are several standard sizes of these elements. Namely:

• 5x40;
• 5x50;
• 6x50;
• 6.3x40;
• 6.3x50;
• 7x40;
• 7x50;
• 7x70.

But these are not all sizes that are available for sale. The price largely depends on the dimensional characteristics.

At the same time, you can find products with dimensions 6.3x13, 4x13, etc. The most popular and common sizes are euro screws with a length of 50-70 millimeters and a thread diameter of 7 mm.

How to choose a drill?

Before starting work on assembling furniture, you need to prepare all the tools. Information about the Euro screw itself will help you to choose which drill to drill for the confirmation. If there is a ready-made device of the desired brand, then there will be no problems.

However, a situation often occurs in the practice of home craftsmen when they have to work with what is available. It is strongly not recommended to use drills of a smaller diameter - for confirmations 5x40, 5x50 this is a size of 3.4 mm, and for products 7x40, 7x50, 7x60, 7x70 - 4.5 mm.

In an insufficiently sized hole in hard wood, the fastener does not twist, it jams. If in the work the details of furniture made of chipboard or LMDF, then at best they will swell, and at worst they will crack.

The head of the confirmation is measured, the part that is inside the product, but does not have a thread. It may differ slightly from manufacturer to manufacturer. The diameter ranges from 6.3mm to 7mm. Which drill bit for confirmation should I choose in these cases? The factory device is designed for a diameter of 7 mm.

It is versatile because the size of the head does not play any role in the reliability of the connection. This part of the Euro screw is located in the upper pressure piece. The load rests on the confirmation head, which centers the fasteners and tightens the structural elements.

A slight backlash is sometimes even convenient. In case of minor errors, the connection can be loosened, the position of the part corrected and the screw tightened again. Even a millimeter hole larger than 8 mm will not impair the reliability of the fastener.

Features of drills for confirms

When working with a confirmation mount, it is important to correctly determine which holes to drill for the Euro screw. Having looked at the appearance of a standard Euro screw, and given that it completely goes deep into the body of the part, we can conclude that it is necessary to drill a hole with two different diameters and tapered sections.

Of course, you can use a constant section drill under the Euro screw. Rather, you will need two twist drills of different diameters and two countersinks. It is quite difficult to select such a diverse set of tools for each standard size of the confirmat, therefore it is better to use a special drill for a Euro screw.

With a confirmation drill, a hole of the required configuration is obtained in one operation. Such a tool consists of two detachable parts. It includes a conventional twist drill for wood of a certain diameter. With this drill, a hole is obtained in a wooden part into which the threaded part of the fastener will be screwed.

The second part of the cutting tool is a milling cutter, which cuts a hole in the wood for a smooth cylindrical part with a transition, as well as a conical recess for a countersunk head. The twist drill fits into the center hole of the cutter and is fixed in it with a special fixing bolt. The bolt is screwed in with a hex wrench.

The compound drill for furniture joints is convenient in that when the central twist drill for wood is worn out, it can be replaced. You can take a regular drill from a set of suitable diameter, insert it into the cutter and secure with a fixing screw. When using a suitable confirmation drill, the Euro screw is screwed into such a hole without unnecessary effort and does not destroy the structure of the part.

A quality drill for the euro screw is made of high-speed steel and has the letters HSS in its marking. Also, the marking on the shank of the drill or cutter must indicate its diameter and working length. The kit should preferably include a hex wrench to tighten the fixing bolt. The shank of the cutter is usually cylindrical in shape and can be installed in the chuck of a conventional drill or screwdriver. Drills for laminated chipboard should have increased strength, reliability and good sharpening of the cutting edges.

Drilling technology

The holes for the fastening screws in question should be drilled in strict accordance with the rules and strictly according to the instructions.

Prepare wood parts, clean their surface from dirt and chips.
Pre-mark the drilling area.
One of the most fundamental conditions is that holes must be drilled strictly at an angle of ninety degrees.

This is especially important for holes that are created in the transverse edges of the chipboard. Nowadays, panels made of laminated chipboard 16 mm thick are often used

In this case, with any deviation from the vertical, it is possible to simply scratch or even break the workpiece. In order to prevent this, in practice, a template is used, by means of which the cutting tool will stably enter the product at the named angle.
Check if the selected drill is suitable for the used standard size of Euro tie.
Drill for Euro screw.

Into the layer details

Make a mark (0.8 cm from the edge and 5–11 cm along the product), then make a notch at the marked point using an awl, this is necessary so that the cutting tool does not "walk" in the first seconds of drilling.

Before drilling, it is necessary to make a lining under the part from trimming unnecessary chipboard. This will make it possible to prevent the occurrence of chips at the exit of the hole being made.

When the product has been drilled through, replace the underlined piece of chipboard and substitute something higher in its place so that the workpiece is in weight, and continue working.

At the end

As in all the cases described above, the main principle here is that the drill must be positioned strictly at right angles to the workpiece. Everything is much more complicated if you need to drill the end face of the workpiece.

Work must be done very carefully, otherwise the drill may "slip" to the side and thereby spoil the product

When working with the end face of the element, the cutting tool must be removed from the chipboard so that it does not become clogged with chips.

In two at the same time

This method is particularly accurate and also the fastest. However, in order to drill a hole in several elements at the same time, they must be securely fastened before work, for which you can use specialized clamps, clamps and other devices.

Features and Benefits

In fact, the confirmations are the same screws, but they have a more massive working body. The thread has a wide threaded pitch, the head is longer, and a secret special design is hidden in the head.

Confirmates can use different splines, which allows different tools to be used. In one situation, you will need a bit for the confirmation, in another a regular curly screwdriver, in the third a hexagon or a tetrahedron. If we compare with other hardware, then here we have a round section and a straight cut.

The most practical option is the use of confirmations adapted for hexagons. They are the most reliable and easy to use. When the parts are connected together, you can use a hex bit, screwdriver or special wrench for additional tightening.

Compared to the same screwdriver fasteners, they cannot provide the same level of strength. Therefore, furniture connected by confirmations turns out to be more stable, does not loosen over time.

All confirmations can be used:

• for an array;
• Chipboard;
• for wood;
• plywood.

The Euro screw can be used to replace the traditional corners. This is due to the property of the confirmat to withstand bending loads. Therefore, confirmations have become widespread not only as fastening accessories, but also as frame-forming elements.

To mask the fasteners, plastic plugs or special stickers are used. They are made to match the color of the furniture itself or in a similar shade. This ensures the creation of a finished look for furniture products, since confirmations are invisible against the general background.