3 tips to help you tighten any screw with ease

If you like neat and stylish corrugated roofing, then this article is for you. It is important not only to choose the right quality coating, but also to secure it correctly. Then the metal roof will serve for a long time, without bothering you with the periodic need for local repairs.

How to attach corrugated sheeting to the roof with self-tapping screws and how difficult is it? There are really a lot of subtleties and nuances here: starting from the choice of suitable screws and ending with the puzzle of which wave of the sheet to attach them to - top or bottom. Let's figure it out.

How to properly screw self-tapping screws into various materials

Concrete

Perhaps the method of installation in concrete is now known to everyone: first you need to install a dowel in it, and then you need to screw the self-tapping screw into this already installed dowel. According to many craftsmen, the reliability of fixation increases significantly if the surface of the dowel is lubricated with appropriate glue.

To drill holes, it is best to use a hammer drill, the rules for choosing which we have already written about earlier. By installing self-tapping screws on dowels, you can use both universal products and wood.

Ceramic tiles and bricks

If you need to screw a self-tapping screw into a brick or ceramic tile, proceed in the same way as with concrete. But to drill holes it is better to use a drill.

Soft non-ferrous metals

To ensure reliable fastening in such metals, before screwing the product into them, you should drill a hole of a very small diameter, smaller than the diameter of the self-tapping screw. Screwing it in is done without any special tricks. The only important point is that it is necessary to use only universal type products.

Hard metals

The diameter of the pre-drilled hole in such material should be equal to the diameter of the universal screw without taking into account its thread or slightly exceed it. However, some hard metals - cast iron, for example - are simply too tough for self-tapping screws.

Plastic

Self-tapping screws are not suitable for all types of plastic; some of its varieties may simply collapse when screwed in. If you are completely sure that your plastic product is not one of them, then in this case you should use the technology that was described above for soft metals, using self-tapping screws for wood.

Wood and wood panels

Naturally, in this case, you should again use self-tapping screws for wood. If they are screwed into thin boards or slabs, as well as into hard wood, a thin receiving hole must first be drilled. The easiest way to work is with thick boards made of soft wood: no special tricks are required for this.

Drywall: pay special attention!

Drywall is a material in which screwing screws into which involves the largest number of different nuances. The main ones include:

• the optimal screw-in step for this fastener is considered to be a distance of about 70 cm;
• When using a screwdriver when working, you should start immediately at maximum speed, gradually reducing it as the screw deepens;
• When working with a regular screwdriver, you need to ensure smooth and restrained movements;
• the head of the twisted screw should press the cardboard surface of the sheet without breaking through it. This condition is the key to maximum strength of the future structure;
• if the surface of the sheet is torn, the screw should be removed, the hole should be filled with putty and a new place to install the fastener should be selected at a distance of about 5-9 cm.

When working with drywall, the type of self-tapping screw is selected based on the material of the supporting sheathing. If it is wooden, then self-tapping screws with wood threads are used; if it is metal, then universal ones are used.

So, we have introduced you to the basic rules that allow you to screw a self-tapping screw into any metal in such a way as to ensure maximum reliability of the structures you create. We hope that our recommendations will allow you to eliminate any defects and make any repairs the way you originally intended.

Some tips for using self-tapping screws

The self-tapping screw is one of the most common fasteners throughout the world. These simple but very effective hardware are used to connect parts made of wood, polymer materials, steel, non-ferrous metals and their alloys.

In addition, self-tapping screws help ensure reliable and at the same time dismountable connection of completely different materials, such as plastic and wood, drywall and steel. Despite the fact that everyone knows how to use self-tapping screws, there are some subtleties that are not familiar to most home craftsmen.

We have prepared some interesting tips that will help make working with these hardware easier, more efficient and safer.

Safety during work

At first glance, it may seem that screwing in self-tapping screws is not fraught with any troubles and the only thing to be wary of is licked slots.

You will be surprised to know that every year tens of thousands of people around the world are seriously injured when working with these products.

Problems related to safety violations, malfunctioning tools, or simple carelessness can range from abrasions and cuts to penetrating limb wounds and eye injuries.

To avoid trouble when working with screws of this type, you must follow a few simple rules:

• Always use the correct tool. This applies not only to corded and cordless screwdrivers, but also to regular screwdrivers;
• Always wear safety glasses when operating a screwdriver. A self-tapping screw that is screwed in with force can fly off in any direction in an emergency;
• Use gloves to protect your hands from punctures and cuts during work;
• Always carefully examine the place where you plan to screw in the screw. When working in an unfamiliar environment, you can get fasteners into electrical wiring, cables, plastic water supply or heating pipes;
• While working, store hardware in a special pocket on your work belt, box or other container. In this case, the likelihood of losing a sharp product is significantly reduced.

The safety measures listed above are quite enough to protect yourself while working.

Subtleties of screwing self-tapping screws

Anyone can screw in a self-tapping screw, but there are several nuances that will allow you to apply a minimum of effort and perform the operation with the highest quality:

• When working with wood, especially hard wood, always prepare a pilot hole for the screw. This will allow you to quickly and accurately screw the screw into the material and prevent cracks from appearing;
• To ensure that the screw fits well into the wood, lubricate it with machine oil. You will be surprised how much easier your job will be;
• When using self-tapping screws with anti-corrosion coating, try not to damage the protective layer, especially if the connection is in a damp place. Regardless of the condition of the hardware surface, it is advisable to cover the installation site of the self-tapping screw with paint or varnish;
• If it becomes necessary to secure a part with self-tapping screws in a circle, do the work crosswise to prevent distortions and deformations. Do not tighten the screws all the way until you have installed everything - this will save you from surprises in the form of cracks in the wood and plastic. It is much safer to tighten the fasteners at the end of the job;
• If the screw is bent during the screwing process, do not try to screw it in all the way. The optimal solution would be to use another screw, since hardware that has lost its shape most often creates problems at the end of installation and can damage the material around it;
• Using a screwdriver, set the spindle speed to low. When screwing in screws, the torque developed by the tool plays an important role, and high rotation speeds can reduce the accuracy of the work or lead to injury;
• When connecting two wooden elements, you need to drill a through hole in the first one, through which the self-tapping screw will pass without any effort. This trick will not affect the reliability of the connection in any way, but will greatly simplify the work;
• When screwing a self-tapping screw into metal whose thickness is more than 3 mm, it is necessary to drill, even if the hardware has its own drill;
• When choosing self-tapping screws for plastic, avoid screws with a tapered bottom part of the head. This form, ideal for wood and acceptable when working with metal, is completely unsuitable for plastics that are prone to cracking and deformation;
• Avoid the common practice of heating the tip of the screw before screwing it into the polymer. A molten drop of material protruding to the surface will prevent the screw head from being pressed tightly against the surface of the material. If you cannot do without heating, then you need to start screwing in the fasteners, then, without completing the work, remove them and sand the installation site. After this, you can screw the screw into the design position;
• In places where air humidity is high, use brass screws if possible. In this case, you are guaranteed to be free from the risk of encountering any type of corrosion, from which even many stainless steel hardware is not immune;
• When connecting critical wooden structures in construction, the length of the screw is calculated in such a way that, having passed the first part, it enters to a depth equal to its thickness into the second part;
• When working with wood, avoid making connections in places where there are knots. If this cannot be avoided, be sure to drill a through hole for the passage of hardware.

The list of tips can be completed with one of the most important - always try to use high-quality fasteners produced by well-known manufacturers. In this case, you can be sure that the parts are securely fixed, and you will also be spared such unpleasant accidents as a screw head flying off the body.

Articles about products 09.20.2019 13:32:01

Classification

This fastener is made from different materials such as brass, stainless steel and carbon steel. Also, self-tapping screws have different coatings, such as:

• galvanized (available in yellow);
• oxidized black;
• phosphated black;
• without cover.

Differ by head type:

• semi-cylindrical;
• secret;
• hexagonal;
• hemispherical.

The use of one or another self-tapping screw depends on the density of the material that you plan to attach. Therefore, before purchasing this product, you need to decide on the following:

1. Connection operating conditions.
2. Is it necessary to drill a hole before screwing?
3. What material should it be screwed into?
4. What material will be attached.

Based on this, you make the appropriate choice, whether it will be a self-tapping screw for metal, wood or concrete.

The main difference between self-tapping screws for wood is the rare thread, unlike their counterparts intended for metal. Such fasteners can be black, gold and white. So, if it is necessary to screw a golden hinge on a door, then a golden self-tapping screw is selected accordingly. In most cases, the choice falls on a black self-tapping screw.

For metal

As already mentioned, the thread on such a self-tapping screw has a frequent pitch. This is due to the fact that metal is a fairly hard material, so the adhesion must be made strong. Moreover, some metals should not be pre-drilled, such as tin. For thicker metals, you will need to make a hole.

Roofing

Such self-tapping screws are used for fastening roofing sheet material. It must be equipped with a rubber seal. As a result, the connection, in addition to strength, becomes airtight.

Furniture or confirmation

This type of self-tapping screw requires pre-drilling a hole in the furniture piece. A hex wrench is used to tighten it.

These are perhaps the most common types of self-tapping screws that are used in various fields of construction. Let's look at the details of how to screw this or that self-tapping screw into different surfaces.

Metal screws: 70 photos, design features and the best ideas for use

Everyone has done renovations at some point or are planning one in the near future. And usually you can’t do without self-tapping screws, since they are considered an excellent fastening material for use on various surfaces. This could be wood, drywall, or one of the metal versions.

The first two materials are easy and convenient to work with, but the last one is not as easy as it seems at first glance. It has a more rigid structure and not all self-tapping screws are able to overcome it.

So that you do not make a mistake with your purchase, you need to figure out which metal screws are best suited for your purpose. They are sold on a weight basis or one at a time and are not expensive, but usually a lot of screws are needed so a useless purchase will blow your budget.

Based on various sales points, they are called self-tapping screw elements - this explanation is necessary so that you do not make a mistake and understand what we are talking about. Although sellers should understand you from the first words of an explanation of why the fastener is needed.

By the way, it is worth consulting with them as this is a surefire way to buy what you need for your purpose. If you choose on your own without the necessary knowledge, then you will have to deal with a lot of different options for self-tapping screws, differing in size, material, and shape.

You can look at photos of self-tapping screws for metal, and you will be convinced that their diversity is difficult for an unprepared buyer to understand. Because of this, we will fill the gap in your knowledge so that you understand why you are buying this fastener. Let's look at different types of self-tapping screws, and especially focus on those created for working with metal.

Self-tapping screws for working with metal

They come in two types, and differ in some nuances. Let's look into them:

Self-tapping screws based on a pointed end are very similar to the classic type of screws popular in Soviet times. They are created using high-quality metal, and are equipped with successive turns of thread with a small inter-ridge space between them.

This is necessary to increase the quality of adhesion to very hard surfaces - various metals. This type has the following characteristics:

• The diameter is offered in the region of 3.5 - 5.0 mm, and its level increases closer to the screw head;
• The length is usually about 10 - 50 mm based on threaded application in 5.0 mm increments;
• If the length reaches 60.0 - 100.0 mm, then the thread pitch will be around 10.0 mm;
• Based on 110.0 - 120.0 mm it will be about 15.0 mm;
• And with a length of 125.0 - 220.0 mm, threaded threads are usually offered in increments of 20.0 mm.

Important: Now there are many manufacturers, and sometimes they produce self-tapping screws of this type with other parameters based on their own vision of their dimensions. Because of this, you can find any version of such a fastener on sale.

If you need to fasten something to metal with a thickness of 2 mm, then you do not need to create a preliminary socket, since a specialized self-tapping screw will cope with this task.

And, if the thickness turns out to be greater, then create a passage using a drill with a diameter smaller than that of the fastener by about 2.5 mm. Due to this, it will be possible to achieve a tight connection between the part and the metal.

Make no mistake and choose the right self-tapping screw for working with metal. To manufacture this type, a very durable metal with a galvanized or oxidized coating is used. They are found on a metallic, gold or black base.

Metal screws with a drill are no less useful, since they are used for a slightly different fastening purpose. But in general they are almost the same as with a pointed end. But there are a number of differences:

• Has a drill tip
• The cap is offered in the form of a cone or a press washer.

There is no need to create a pre-socket for this type, as it fits easily into any metal and makes an excellent connection. This is facilitated by the unique shape of the fastener head.

Why is the option with a press washer interesting?

If you remember, we have already mentioned self-tapping screws with a press washer, but, nevertheless, we will create a separate description for them, since they are distinguished by the large size of the contact area of ​​the cap. And due to this, they stand out noticeably among other types of self-tapping screws.

With the help of a special design, this fastening element perfectly fastens various forms of wooden slats and metal sheets with a thickness of 1.1 mm. But in appearance it is almost no different from its analogues, since it is not supplied with a unique color, and usually has a silver color.

Only a professional who constantly works with them during various construction activities can figure out which screw is in front of him.

What about the hexagonal view, why is it interesting?

Externally, self-tapping screws with a hex head are similar to a bolt, and an untrained buyer may not be able to distinguish them by shape, but there are differences. Let's look into them:

• It has a non-fastened screw thread;
• The end is pointed, but not too much compared to the version that has its own drill.

Used for reliable fixation of parts of large mass and size. It can be screwed into wood or concrete, provided that a suitable dowel is used.

Important: The dowel to work with this fastener must have a diameter twice that of the self-tapping screw.

But working with this self-tapping screw is not easy, since you will need keys with dimensions of 10, 13 or 17 mm. It depends on the size of the cap and the fasteners used.

And what about special screws for the roof?

Yes! Manufacturers produce roofing screws that differ from analogues not only in purpose, but also in other characteristics. Let's look at their features:

• Supplied with a drill end;
• They have a hexagonal head;
• Available with a rubber washer option.

The hex head of this type has a size of 8 or 10 mm. And the rubber version of the washer is needed for two purposes:

• It is considered an excellent gasket with insulating properties, which helps prevent moisture from penetrating under the surface of the cap;
• Creates an elastic seal for the connection, which improves its quality.

Now you have information about the most popular self-tapping screws for various purposes. Remember - it is very important to use a fastener with suitable characteristics. Otherwise, the connection will not be of good quality, and an unexpected situation may occur with serious consequences in the form of damage to some items or injury.

Photo of self-tapping screws for metal

In what wave should the self-tapping screw be fastened? Theory and practice

Now let's move on to the most controversial issue. The fact is that as long as corrugated sheeting has been on sale, disputes about its installation have not subsided.

How to properly attach a self-tapping screw: in the upper or lower wave? It would seem, why do such questions arise at all if the manufacturer clearly indicates that the fastening occurs in the lower wave?

Actually the question makes sense. The self-tapping screw in the lower wave reliably presses the corrugated sheet to the sheathing, and the roof itself looks protected. But, at the same time, the water along the slopes always follows the lower wave, and such fastening is always in the water, unlike the upper one.

Moreover, any error during the installation process will result in roof leakage and rapid corrosion of the roofing material. Therefore, the roofers themselves offer an unusual, but practically justified solution to the problem:

• If the roof is installed by professionals in whom you are confident, then let them screw a self-tapping screw into the lower wave;
• If the team is unreliable and there is a risk that the craftsmen will not observe all the technological details, it is better to go to the top. This method will not affect the overall strength of the roof in any way, but during rain, problematic attachment points will not create problems.

But remember! In case of violation of the installation instructions supplied by the manufacturer, the warranty does not apply to the finished roof. Therefore, weigh the pros and cons and choose the appropriate installation option.

Installation process in detail

It is customary to lay corrugated sheets on the roof with a distance between the rafters from 600 to 900 mm. When screwing in self-tapping screws, always make sure that they only enter the corrugated sheet at a right angle, and that the rubber washer is compressed by no more than 1 mm. If you break one of these rules, you cannot avoid moisture getting directly into the fastening points.

To make it easier to screw in roofing screws, use a screwdriver with a hexagon socket:

The screws themselves are evenly distributed along the waves, at the joints of the sheets, when approaching the ridge, ridges, along the gables and on the eaves line.

Adjust the speed of the screwdriver in advance - so that during the process, when you press the corrugated sheet to the sheathing, the rubber gasket is only slightly pressed. Here is an example of incorrect (left) and correct (right) compression of a rubber gasket:

By the way, sometimes you have to install corrugated sheeting into a sheathing made of very dense wood. For example, if a self-tapping screw gets into a knot. Then, with the same rotation of the screwdriver, the screw will remain unscrewed. Here you will have to increase the rotation speed, tighten the screw and return to the previous settings.

Try to hit the self-tapping screw exactly in the center of the sheathing - this will minimize the possibility of deformation of the corrugation. Next, tighten the screws in a checkerboard pattern. Place the fastening points for high profiles through one wave, and for low ones through two - this will increase the reliability of the roof.

Advice : if the corrugated sheet is too long, like the roofs of industrial facilities, and the profile is high, then, with a run pitch of more than one meter, attach the sheets to each lower corrugation.

Next, along the line of the roof end, you need to screw self-tapping screws into each sheathing. In general, you will need about 6-8 pieces per square meter.

Once you have finished installing the corrugated sheeting, carefully inspect the roof. Its general appearance, reliability of transverse and longitudinal joints, dents and correct fastening with self-tapping screws.

Screws and self-tapping screws

Wood screws and self-tapping screws are convenient and practical fasteners to use. They provide reliability and strength to the connection of wooden parts and can be a worthy replacement for conventional nails.

Screw

- this is a fastening element, the rod of which is 2/3 covered with threads, and on the head there is a slot or a cross-shaped notch for a screwdriver. In order not to confuse a screw with a screw (which is practically not used in carpentry), remember that the screw has a tapered end. Self-tapping screws are very popular. When screwed in, they create a thread in the connection hole. Self-tapping screws, like simple screws, can be of different lengths and thicknesses, with different slots and head shapes, but on a self-tapping screw the thread is made along the entire length, right up to the head - this is their main visual difference.

Countersunk screws

are useful for connecting parts where the head should be flush with the surface or recessed inward, as well as for fastening fittings.

Countersunk head screws

most often used for attaching metal parts to wood (for example, corners for shelves) where design features allow this.

Round head screws

used for fastening sheet material, due to the thickness of which a countersunk head cannot be used, in places where the protruding head does not interfere with the design features or appearance of the product (for example, the back walls of cabinets).

Black screws

with a large pitch (distance between turns) of thread - these are the most common and cheapest self-tapping screws. They fasten drywall to profiles or wooden blocks, wood to wood, and are used for those jobs where appearance is not particularly important. The thickness of such screws depends on their length: the longer the screw, the larger its diameter. The hat is hidden, when fastened it becomes flush with wood or drywall. Disadvantages of black self-tapping screws: unattractive appearance and lack of coating, which causes the head to rust over time.

Yellow or white

with a protective coating - decorative screws, the thread runs along the entire length of the screw, the head is hidden. Sizes start with the smallest - 10-12 mm long and more. They are much more expensive than black ones, but they hold the material worse. They are used for finishing and decorative work, and for fastening with dowels in the wall. The hat does not rust and does not spoil the appearance.

Self-tapping wood grouse

- This is a very large self-tapping screw. It is used in places where there is a lot of pressure or load. The self-tapping screw has a hexagonal head. In order to secure it, you will need an open-end wrench or a screwdriver with a special bit head of the required size. It is necessary to drill out the wood for such screws, otherwise, due to its thickness, it will either not be possible to screw it into the tree, or the screw will split the wood.

Advice. To make it easier to screw in the self-tapping screw, you can first dip it in machine oil

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made of hardened steel, with a countersunk head. Used in the same way as universal fasteners. For large diameters you need a guide hole; small screws can be screwed in without it.

Frame screws and self-tapping screws

made of hardened steel with a large thread pitch are needed, among other things, for screwing chipboard into the edge (side of the board), since they do not split chipboard and relatively thin wood. To make work easier, you can pre-drill guide holes for them.

Types of screws and fasteners for metal with a drill - Turner Master

Self-tapping screws are a type of fastener made in the form of a rod with a head and a special external thread that forms an internal thread in the hole of the object being connected.
Self-tapping screws have a cylindrical surface with a triangular thread. Self-tapping screws are a fastening material widely used in construction. They have a very wide variety of materials, sizes, shapes, and methods of application.

To tighten it, you need appropriate screwdrivers or bits for screwdrivers. It will take a lot of time to talk about all the variety of self-tapping screws.

Therefore, below we will talk about the most common types of this product.

Wood screws

The main difference between wood screws is the rare thread pitch. Unlike metal screws, wood screws have a noticeably larger distance between threads. This is explained by the fact that the density and hardness of wood is much less than that of metal.

There are black, white and golden self-tapping screws in color, which can be matched to the color of the material used. The most popular ones for use are black.

Screw sizes

The length of self-tapping screws ranges from 11 mm to 200 mm.

You can often hear how builders call the smallest screws “seeds” - because of their small size, similar to a sunflower seed.

Diameter of wood screws

According to the diameter of the rod, black self-tapping screws come in 3.5 mm and 4.2 mm, while yellow and white self-tapping screws have diameters from 2.5 to 6 mm.

Drilling holes for screws

There are often cases when, before fastening to a self-tapping screw, it is necessary to drill the materials being fastened (pass the fastening point with a drill). This must be done for dense and thin materials.

For example, if you try to screw a self-tapping screw into dense oak wood without pre-drilling, the self-tapping screw will simply break off, bend, or significantly under-tighten to the end, and there will be no tightness of the connection (a gap will appear between the connected elements).

When fastening thin parts, pre-drilling is necessary in order to avoid cracks and splits in the thin material being attached.

You can select the diameter of the required drill for drilling for a particular self-tapping screw using this table:

If the diameters of the drill and the screw are equal, the adhesion density will be very low or there will be none at all.

Tighten the black screws using a screwdriver with a PH2 connector or a similar bit. For golden screws - PZ bit No. 1, No. 2 or No. 3, depending on the diameter of the screw.

Self-tapping screws for metal

Self-tapping screws for metal, unlike screws for wood, are characterized by a frequent thread pitch with small spaces between turns.

The length is similar to wood screws from 11 to 200 mm.

Diameter 3.5 mm.

They have a PH 2 connector.

Black self-tapping screws for metal come with a drill and a sharp tip.

For self-tapping screws with a sharp tip, it is necessary to pre-drill the metal, except for cases of fastening thin metals (up to 2 mm). When the metal thickness is more than 2 mm, it is necessary to drill with a 2.8-3 mm drill.

Self-tapping screws with press washer

They are used for fastening a wide variety of materials: metal, wood, soffits, siding and many others.

The large head, called a press washer, allows you to press the material being fastened tightly without using a washer.

• Have a rod diameter of 4.2 mm
• Length from 13 mm to 64 mm.
• PH 2 connector

Roofing screws

Self-tapping screws with a hexagonal head have a wide range of applications, but most of all they are used for fastening roofing coverings such as metal tiles and corrugated sheets, as well as components for them, for which they received the general name “roofing”.

• The length of self-tapping screws with a hexagonal head varies from 19 to 100 mm.
• Rod diameter 4.8 and 6.3 mm.

They are equipped with a washer with a rubber gasket, which is responsible for the tightness of the connection, which is important for installing a roof (to prevent leaks).

In terms of color diversity, caps can be of very different colors: red, brown, green, white and others. The color of the cap is matched to the color of the material being fixed and is marked according to the Ral and RR color standards.

There are also self-tapping screws without painting - just with a galvanized head and washer.

To fasten (tighten) these screws, bits with an internal hexagon are used.

Bit size:

• for self-tapping screws with a core diameter of 4.8 mm - 8 mm bit
• with a rod diameter of 6.3 mm – bit 10 mm

Confirmat – furniture screw

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Confirmats are used when assembling furniture.

The most used ones are 50 mm long with a hex head.

This type of fastener requires mandatory pre-drilling. There is a special confirmation drill for this.

To tighten the confirmations, use hexagons or bits for HEX 4 brand screwdrivers.

Construction wood grouse

A capercaillie is a thick-rod self-tapping screw with a hex head.

Capercaillie are widely used in fastening various units of heavy structures, where special strength and reliability of the connection is required.

When constructing pitched roofs, wood grouse are used for wooden rafter systems and interfloor ceilings.

• The thickness of the wood grouse's rod is from 6 to 10 mm.
• The size of the hexagonal head of wood grouse varies from 10 to 19 mm.

They are tightened manually with wrenches of the appropriate size, or with attachments using ratchets or power tools. Pre-drilling may be necessary.

For fastening to bases made of concrete, brick, foam block, etc., they are used together with a plastic dowel.

Metal screws: characteristics and features of products

Self-tapping screws are actively used not only in many areas of repair and construction, but also in everyday life. Their popularity is due to their wide range of uses, as well as reliable fastening and ease of installation.

Hardware may differ in shape, size, external features and purpose. So, to work with metal, it is necessary to use fasteners specifically for this material. Therefore, today we will talk about GOST standards for black and non-ferrous galvanized metal screws with a drill and a press washer, reinforced with a drill, their sizes, prices per piece and other parameters.

Fastening elements that are designed to work with metal have a number of features:

• Resistance to the negative influence of external factors;
• Affordable price;
• High wear resistance;
• Long service life;
• Easy installation;
• High quality.

Metal self-tapping screws are used in many fastenings of metal structures, organization of industrial and production facilities and in many other areas. At the same time, both a specialist and a beginner in this field will be able to perform fastening.

Modern hardware that is presented on the market has an affordable cost, long-term operation and high quality of the fastening created.

With the right choice of products, they will be practical, easy to use and highly durable. Even after a long period of time, these connecting elements retain their original appearance and reliability of fastening.

This video will tell you about the features of metal screws:

The quality of hardware is influenced by two factors:

To be sure of high quality, it is recommended to purchase self-tapping screws from companies that have been on the market for more than one year and have managed to prove themselves. Serious enterprises purchase raw materials for self-tapping screws from trusted suppliers, in addition, they regularly check the quality and integrity of their products.

• Fasteners intended for metal can be distinguished from others by the tip, which is made in the form of a drill or point.
• As for the heads, they can be countersunk, hemispherical and semi-cylindrical or hexagonal.
• A special alloy is used as a raw material for production, which is superior in quality to metal, which makes it possible to easily produce reliable fastenings.

Next, let's talk about the weight of metal screws, their diameter and length.

Specifications

Self-tapping screws for metal can be produced with a pointed end and with a drill. Their diameter ranges from 3.5 to 5 mm and increases in proportion to the length of the product. Firms engaged in the production of hardware produce products with the following parameters:

• Length 10-50 mm with a thread pitch of 5 mm;
• Length 60-100 mm in 10 mm increments;
• Length 110-1200 mm, thread 15 mm;
• Length 125-220 mm, pitch 20 mm.

These parameters are approximate as they may vary from manufacturer to manufacturer. That is why on the modern market you can find metal hardware with parameters of 150 * 4 mm.

• In order to fix sheet metal 2 mm thick, you do not need to pre-drill it.
• With thicker sheets such a need arises. For tighter fastening, it is recommended to drill holes 2-3 mm smaller than the diameter of the screw.

We’ll talk about metal screws, their installation and price per kg below.

This video will tell you about the sizes of screws for metal:

• The cost of one product coated with polyester is about 3-4 rubles, and with a polymer coating it will cost twice as much. Moreover, purchasing a package will be much cheaper than purchasing individually.
• With parameters of 4.8*29 mm, one thousand units will weigh about 5 kg.

• Before you begin attaching a metal structure, you must correctly cut the material (in the case of sheet metal).
• When using hardware with a sharp base, there is no need to make holes in the metal up to 2-2.5 mm.
• In other cases, it is recommended to prepare holes in advance that will be slightly smaller than the diameter of the screw itself.

The wider and thicker the metal sheets, the greater the load they bear on the structure itself. This means that the step between the fasteners must be reduced somewhat. Usually it is 400-500 mm. Preliminary quantity calculations are made from the same value.

Metal screws allow you to create durable structures that can withstand heavy loads. Correct selection of these connections is the key to reliability and long service life.

This video will tell you how to choose the right screws for metal:

Principles for choosing roofing screws for metal

The modern market for roofing materials is constantly evolving, which leads to the emergence of new substances that can replace conventional slate. But to obtain durable roofs, material alone is not enough - here you also need to take care of fasteners, which have also changed. Increasingly, special self-tapping screws are used for fastening metal products, differing in shape and quality.

Roofs today are very often covered with metal tiles or other similar products.

A feature of almost all metals is a high risk of corrosion when exposed to water, which, in turn, affects the quality and durability of the structure.

To minimize this impact, professionals recommend using special roofing screws as fasteners.

Metal hardware has several significant advantages over other similar products.

• High connection reliability. At the same time, its decorative appearance is much higher quality, which affects the external characteristics of the entire surface.
• Easy to install. This allows you to speed up the fastening process several times.
• The self-tapping screw is easy to unscrew. If necessary, it can be easily dismantled without damaging the metal surface. This feature also allows you to reuse such hardware in other systems.

Roofing fasteners are practically free of disadvantages. The only disadvantage of such products can be considered low-quality washers and rubber seals. If these elements do not fit tightly together, then water can get under them. Therefore, such hardware will not last long, and its use will lead to corrosion on the roofing material itself.

Mounting on brackets or hooks

Quite a simple way. To do this, purchase brackets or hooks, which are fixed to the wall surface using self-tapping screws. The fasteners can be made on the frame stand - this way it will be stronger. The large area of ​​the bracket will distribute the load, and this will allow the self-tapping screw to be securely secured in the drywall.

However, this method will still not be able to provide normal fastening for large furniture elements or other items.

Four-segment dowel

Due to their structure in the void, such dowels begin to fold into a knot, due to which, firstly, the load is evenly distributed, and secondly, it will not rotate and will be firmly fixed in the plasterboard wall thanks to its ribs.

To attach it, you need to make holes in the wall exactly in diameter and screw in a self-tapping screw.

Butterfly dowel

Fastening various types of shelves, lamps and chandeliers to plasterboard can be done perfectly with a butterfly dowel. The fastener itself is made of nylon. The ribs firmly fix it, which will prevent it from turning, and the side will prevent it from falling inside the walls. But the main thing is the design, which, when screwed in, opens into two halves in the form of wings, which rest against the drywall on the other side. The load is distributed and the mount is firmly secured.

The fastening method is the same as in the previous version.

"Driva"

This is a short and thick nylon type of fastener with a screw thread on the body. It is screwed directly into the drywall with a special attachment - “driva”. You can also use the traditional method by drilling a hole of 8 millimeters. Fasteners in drywall using this method can withstand a maximum load of 25–30 kilograms each.

One “drive” fastener can withstand a load of 25-30 kilograms.

"Umbrella"

Fastening heavy objects to a plasterboard wall is ideal with an umbrella-type dowel. It is made of metal and looks like either a screw or a hook. The structure opens behind the drywall and evenly distributes the load onto the surface.

The installation of such fastenings is traditional. Holes are drilled into which fasteners are inserted and a screw is screwed in. The option with a hook is an excellent solution for attaching various types of chandeliers and lamps.

Dowel moth

The Molly system dowels are perfect for fastening various elements to a plasterboard wall - from small lamps to massive wall cabinets.

The design is a metal dowel with slots on the sides and a screw. Specialized pliers are used for mounting. But if you need to secure several elements, you can do without them.

Installation is carried out as follows: using a drill, a hole is punched in the drywall along the diameter of the dowel. In the middle of the fastener slots, the wings are slightly bent and the screw is slightly tucked. Insert the fastener and screw it in until it stops.

The structure will open on the other side, and the legs will sit firmly on the surface, evenly distributing the load.

When choosing a dowel, you need to choose the correct diameter of the fastener, then you can easily hang not only something light, but also, for example, a massive cabinet.

The diameter of the fastening material is selected depending on the weight category of the item. For example, a wall kitchen cabinet for dishes measuring approximately 600x900 millimeters can be freely hung on a six-millimeter moth.

Fastening it to drywall using one of the suitable methods will reliably serve for a long time, the main thing is to correctly follow the installation technology and choose the right material.

Features of use for wooden products

If the work is carried out on wooden structures and the wood of the products is not too hard, and the self-tapping screw has a small diameter, then it can be screwed in without pre-drilling holes.

If the wood is hard and the bolt is large in diameter, then you need to drill a hole before starting the screwing process. To do this, take a drill of a smaller diameter, approximately 70% of the diameter of the bolt, and drill a hole to a depth slightly greater than the capercaillie, about 10 mm. This is done so that the thread does not break off under strong pressure during screwing.

After this, you need to take a small brush and clean the hole, removing any remaining wood from there. Sawdust can clog the passage, and the screw will not screw in completely. In the absence of a brush, you can take a thin, long screw and run it back and forth several times in the hole.

In order for the self-tapping wood grouse to hold firmly, you need to use washers with it that match the diameter. Their outer diameter should be equal to three internal ones. DIN 9021 washers work well. Before you start screwing, you need to thread the washer onto the shank, and then start working.

We analyze popular installation mistakes

Let's look at the main mistakes - the more you know about them, the more reliable your roof will be:

• Drill bit too big. The result is no tightness or load-bearing capacity of the connection.
• Drill bit too thin. This will certainly lead to either broken fasteners or biting of the thread - its partial destruction. And such a mount, of course, cannot be called high-quality.
• The screw is tightened too loosely. In this case, the rubber gasket will not fit tightly to the surface of the metal sheet, and moisture will easily get under it.
• The screw is tightened too tightly. In this case, the rubber gasket will quickly crack due to overvoltage and begin to leak water.

The following illustration will help you understand this:

To avoid over-tightening the washer or breaking the drill, it is necessary to use the appropriate tool. A screwdriver with a low rotation speed (up to 1800 rpm) is suitable for this purpose, which allows you to control the angle of entry of the self-tapping screw into the roof.

Be careful: self-tapping screws for corrugated sheets are equipped with a washer, which is sensitive to tightening when screwing.

But what to do if you screwed the self-tapping screw into the wrong place (for example, you missed the sheathing), and twice? There is a way out: you need to close the hole from the self-tapping screw with sealant and a rivet. As a result, the consequences of incorrect fastening will be almost invisible:

Another good tip for the same problem:

As you can see, anyone can make a mistake, but if you know how to correct it, you can avoid problems in the future.

Selecting fasteners for quality fastening

In order for a corrugated roof to be durable and operate flawlessly for decades, there is a special fastening technology. Under no circumstances use regular nails for this.

Water will easily seep into the holes and within a month or two, traces of rust will appear in these places, and there will be chronic dampness under the sheets.

Next, the rust will begin to eat away at the entire roof until it completely destroys it. That is why it is not recommended to fasten corrugated sheets with roofing nails, especially since they simply will not hold the sheets in place under the influence of strong winds.

For a modern metal roof, today professional roofing screws are produced - with a rubber gasket, which, when compressed, completely blocks the path of any moisture:

We are talking about special high-quality cutting screws. Even self-tapping screws that are similar in appearance are not always suitable for arranging a roof - they can weaken the fasteners or become covered with a corrosive coating.

If you did use self-tapping screws that were not suitable for the roof (or they were installed by unskilled workers), do not rush to rip them back out. Seal all holes with sealant, even if there is a rubber gasket. Although it is better not to resort to this method at all.

Professional roofing screws are always made of galvanized alloy steel. It is the source material that directly affects the quality of fastening, ensures correct fit of the material and prevents disruption of the metal structure around the drilled hole. What does this affect?

First of all, whether corrosion of the roofing sheet will appear around the self-tapping screw. If you've ever seen a roof with cheap screws, you probably recognized it by the rusty streaks from the washers. Heading down, they simultaneously destroy the entire leaf.

This does not happen when using the correct roofing screws. After all, even in the factory they are electrolytically galvanized with a layer of at least 20 microns.

Next, the cap is coated with polymer paint on all sides at once to also protect it from corrosion. High-quality self-tapping screws are powder coated in a color according to the RAL catalogue. And the rubber gasket is resistant to temperature changes, ultraviolet rays and load changes.

By the way, among the most suitable ones specifically for profiled sheets, it is recommended to take self-tapping screws from Essve, Gunnebo and Sfs-intec.

the self-tapping screw does not hold in the MDF

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What to do if a hinge is torn out of a cabinet, a chipboard door, how to fix it yourself. Detailed And then we screw the screw in there.

What it is?

During repair work and construction, there is often a need to install wooden structures with high load-bearing loads. To ensure that the fasteners are carried out correctly, craftsmen recommend using self-tapping screws, which may have a square or hexagon-shaped head. This product is made from high-quality stainless steel with galvanized coating.

A plumbing bolt can have different shaft lengths and head shapes. This self-tapping screw has a stamp with information about the manufacturer and characteristics of the product. The rod consists of 2 parts:

• smooth, cylindrical;
• with external thread.

The end of the self-tapping screw is represented by a sharp tip, thanks to which the hardware easily enters the wood. Capercaillie have found their application when it is necessary to fasten wooden structures with high load-bearing capabilities. These hardware are used to fasten slats, boards, and bars to a brick and concrete base. It is difficult to do without hexagons when installing plumbing fixtures on a wall or concrete floor. In addition, this fastening connection is used in mechanical engineering, when working with rails and concrete pillars.

Which ones to choose?

The type of fastener is one of the main factors influencing the reliability and quality of drywall fastening

Therefore, special attention should be paid to their selection

When buying self-tapping screws, it is advisable to consider a few simple rules.

Give preference to self-tapping screws with a countersunk head. This will make it easy to embed them into the drywall structure. It is undesirable to use hardware for such work that has a hemispherical head.

The self-tapping screw must match the type of base. For example, in a log house they use wood fasteners that will easily fit into the tree and secure the sheet. A similar algorithm can be used for wooden frames formed when covering the ceiling or walls.

The length of the screw is selected individually for a specific situation

It is important that it goes inside the frame no less than 2-3 cm. This is especially true for self-tapping screws, which are not supplemented with dowels and represent the main fixing element.

The choice of dowels for plasterboard structures is an important step and involves the assessment of several parameters.

Purpose

Today, dowels can be used to fasten drywall to the base or fix other products on top of this material. If you need to attach a baguette or baseboard in the kitchen, then a butterfly or driva may be the solution. The molly dowel does an excellent job of fastening shelves or plumbing fixtures.

Fastening technology

Screwing in the dowel-drive is not particularly difficult. If you need to use other types of structures, you should understand that they need additional space. This is due to the fact that when the butterfly is opened, the support systems move. Therefore, if a sheet of drywall is attached tightly to the main wall, it is technically unrealistic to use such fasteners. The solution to this problem is ordinary dowel-nails and the correctly selected screw size.

Load capacity

Almost all varieties are used for fastening structures on top of drywall. Fixation of heavy products (for example, a massive chandelier, shelf, cabinet) is carried out only with the help of special anchors or molly dowels. These systems can support weights of up to 50 kg. Driva has proven itself well in fixing structures weighing up to 30 kg. Butterflies are considered the simplest and most unreliable, with which you can hang structures weighing up to 11 kg.

Fixing additional elements with self-tapping screws

Fastening additional elements has its own technology. As a ridge, special planks are used, which are laid with an overlap of 10 cm and a pitch of up to 30 cm.

Additionally, a sealant is placed between the slats and the corrugated sheet. If the sheets have a shallow wave, then a regular seal will be sufficient; if the waves are high, then a ventilated seal is needed:

For additional elements, take longer self-tapping screws than for the sheathing, because sometimes they will have to be attached through the top of the wave. Therefore, the length of the self-tapping screw should be chosen so that it exceeds the thickness of the material with the wave height of the corrugated sheet.

Now you know all the secrets of professional roofers. Ask questions, share your experience and thoughts on how to properly attach modern corrugated sheeting.

How to fix screws in a table

Situation number two. You urgently needed to leave for urgent matters to visit a friend or friend)). However, the stern look of the wife does not bode well. We urgently need to appease her!

Ideal: fix something quickly. For example, an old coffee table inherited from my grandfather. The screws in it have long since become loose, and it’s about to fall apart under the weight of last year’s magazines.

Let's do the following. We turn the screws out of their sockets, insert a couple of matches into the holes, pour in a little glue of any kind for reliability and screw them in again.

For some time, the table will be like new, and you, accordingly, are above any suspicion. This should be enough to have time to run about your business.

Peculiarities

If we consider a hexagon screw, then in appearance it looks more like a bolt with several external features.

1. Screw threads are uncommon.
2. The sharp end is not sharpened too much and hardly stands out.

Its scope of application is quite wide due to how original its design is. If a screw with a hex head is used simultaneously with a dowel, then when fastening large parts to wood, you can use this self-tapping screw to fasten the necessary parts even to concrete. The only caveat is that the diameter of the dowel must be exactly twice the size of the head for reliable fastening.

To work, you will need 10, 13 or 17 mm wrenches, depending on the type of bolt that the master plans to use. This type of fastener is also sometimes called “grouse capercaillie”, because it tightly secures almost any object to the surface with the right approach. When an internal hex bolt is used to organize a roof, its design also has a number of features.

1. A hard and sharp tip, shaped like a drill.
2. Hex bolt head.
3. Rubber washer.

The latter serves as a kind of insulator that reliably protects the bolt from moisture getting inside. Accordingly, in this case there is less risk of rust and moisture. In addition, the washer makes the connection to the screw much tighter than under normal conditions. The diameter of such fasteners can be from 8 to 10 mm inclusive. And the length can be up to 100 mm, so you can choose a screw for literally any roofing material, with any level of load, depending on the need and necessity.

Among hexagonal or multi-sided screws, anti-vandal self-tapping screws are also popular, which cannot be removed without the use of special tools.

Their design itself already attracts a lot of attention from the outside, and the rigid fastening eliminates the risk of any kind of structural damage, which is very useful in public facilities, especially if you pay attention to the name of the screws

Self-tapping screws with a press washer in the design can also have six edges, but in this case there is one important nuance. The area of ​​their cap is much larger, which is suitable for attaching metal sheets. Most often, they do not have any characteristic color; in appearance they resemble ordinary silver bolts.

Another option, when it comes to the design features of specialized screws, is self-tapping screws for furniture production. They are distinguished by a blunt tip and are tightened with a special hex key. Their diameter is generally the same throughout the entire length, but towards the head the bolt itself becomes a little thicker.

Auxiliary Tools

Before you screw a self-tapping screw into drywall, you need to think about tools that can make the job easier. Let's look at what tools and devices you can use:

• The curly screwdriver is a classic of the genre. With its help, the pressure is always easily controlled. With such tools, the screws will be screwed in as needed. The main disadvantage is the complexity of the work. It will take a lot of effort to tighten several hundred screws with a screwdriver;
• A screwdriver has long become an indispensable tool during repair work using plasterboard. At first, it will be difficult for a beginner to screw in the screws to the required depth the first time. It will be necessary to adjust the power of the screwdriver so that the screws are fully tightened, but do not break through the sheet of drywall. Unfortunately, not every tool has a power regulator;
• The belt screwdriver is known only to professionals. This tool is quite expensive for an ordinary person doing repairs at home to afford. With a belt screwdriver, many questions regarding how to secure a self-tapping screw in drywall disappear. This tool has a special tape where screws are already inserted. You just need to place it on the drywall and press a button, and the self-tapping screw will be squeezed out of the tape and screwed into the surface;
• bit with limiter. A similar device is used on conventional screwdrivers to ensure that the self-tapping screw is recessed to the desired depth. A bit with a limiter should be used by anyone who is faced with the need to screw self-tapping screws into drywall for the first time.

A belt screwdriver will speed up the process of screwing screws into drywall

Self-tapping screws for thick metal

Gentlemen.
You need to attach the plywood to the corner of the garage door. The thickness of the corner shelf is 4-5 mm. Are there self-tapping screws so that you can screw them into such metal normally? How to choose the correct diameter drill bit for a metal screw? 11/18/2005 at 12:59

2Ezhachok, Take with a drill at the end

11/18/2005 at 2:58 pm

why not weld steel sheets? Well, if it’s plywood, then maybe M5 countersunk screws? Is the plywood thick? especially if the screws won’t fit into the corner.

11/18/2005 at 16:57

I agree with the question. Or is it better to cut the threads into bolts as well?

11/18/2005 at 17:20

2andrey_o, “Better” criterion? Cheaper, faster, easier? What tools are available? Do you need removable plywood or not? Non-removable - drilled holes and riveted them, riveter

100 rubles, the same amount of rivets, maybe it will come in handy, there are hundreds of options.

11/18/2005 at 20:39

I agree with Viktorich: there are a ton of options. I personally cut the threads and fastened them with screws (there is such a tendency to do everything super securely). Self-tapping screws will also suit you. Just don’t expect them to go into the metal themselves. You'll have to drill it. Blind rivets are also an option. I just don’t see the difference: if the hole has already been drilled, then it’s better to screw in the self-tapping screw. It will be more reliable. Rivets are good for joining two relatively thin layers of metal. And plywood on metal - with a self-tapping screw.

11/18/2005 at 10:48 pm

Question! Should I buy regular self-tapping screws or are there any special ones for metal? How to choose the correct drill diameter for a specific self-tapping screw so that it fits into a thick corner without tearing my tendons?

11/19/2005 at 02:03

4-5mm is quite thick metal, so IMHO self-tapping screws will not suit you, especially if you are going to twist them by hand. A good screwdriver with a torque of 30 Nm or more - yes. Regarding self-tapping screws, ask for metal/metal drill bits, but you will have to twist a hole with a diameter larger than the drill bit on the tip.

11/19/2005 at 02:37

I need to screw 4mm Thin plywood. It will slam and the gate will warp. It would be better if it was 7-8mm, waterproof. There are large differences in humidity and temperature at the gate. Buy regular self-tapping screws. I used regular black ones. Cheaper. Consumption is in kilograms. How to choose the correct drill diameter for a specific self-tapping screw, Experimentally. Approximately 0.5-1mm less than the diameter of the screw. Another subtlety - sometimes you come across weak (or defective) screws. With great force it cuts off the cap. Externally they are no different. So first you need to check on something. so that it fits into the thick corner without tearing my tendons? You can't do it with your hands. A screwdriver is needed.

How to screw a self-tapping screw into a brick. How to screw a self-tapping screw into a brick wall

First things first, first things tools

nails, screws, rivets, anchors

Reliable fastening of the structure is a guarantee that it will last a long time without requiring additional repairs

In this regard, it is very important to choose reliable tools and fastening elements. And this choice must be approached with full responsibility.

You will need special tools. An impact drill is best.

You can also choose a regular drill, to which a pobedit tip is selected. But in this case the work will be more complicated. In terms of cost, this will result in approximately the following figures: from 800 rubles for the tool itself and from 40 to 50 rubles in addition for the drill. Running sizes are considered to be 6 and 8 mm diameters.

The list of materials that such tools can work with is extensive. Their choice will depend on the future load of the suspended structure. The most popular are the following:

• self-tapping screws for bricks;
• dowels (will help withstand heavy loads);
• anchors (capable of holding very heavy things);
• rivets (for delicate glass shelves);
• corners (for small cabinets and shelves);
• regular nails combined with all the others.

It is also important to consider what kind of product is used for laying the surface - it can be either solid or hollow. The types and grades of this product will also tell you how reliable the screws used for bricks are

Main rules of fastening

correct fastening of screws

Before starting work, you need to understand some rules. They will help not to spoil the surface and carry out the correct fasteners:

1. The most basic requirement that must be met when attaching something to a wall made of such material is not to spoil the mortar that holds the blocks together.
2. It would be best to use a drill. It will help to avoid cracks that may appear if, for example, you try to “drive” self-tapping screws into a brick with a hammer drill.
3. Drilling should be unhurried and gradual. This approach will help to secure any element to such a wall.

Working methods

working with self-tapping screws

There are several ways to make it easier to place fasteners on such a wall. Some of them are quite interesting:

If we are working with dowel nails, it is important to prepare a container with water - in it we will periodically cool the drill. You can wrap electrical tape around the drill itself, which will serve as a limiter.

After the hole is ready, insert the dowel glass and hammer in the nail. In order to facilitate the process that self-tapping screws go through when driven into a brick, you can use the “old” method. The dowel inserted into the drilled hole is strengthened with a wooden peg. Another “old-fashioned” method would be to drill a hole and screw a plug or cap into it, previously soaked in PVA glue. Then the “excess” peeking out from the wall is cut off and a self-tapping screw is screwed in. But such fastening is considered short-lived. It is best to use dowels designed specifically for brick walls. They have projections that will not allow it to turn, even if a screw or nail is screwed in. This rule applies even to hollow bricks, in which they will roll up into a knot and occupy the entire required volume. When you need to decorate an external wall (for example, the entrance of a house), you can use corners along with dowels and screws. They will not only connect the structure and the wall, but will even become supporting elements.

4.b.

However, not all people use a screwdriver that has power adjustment; why buy an extra power tool when you have a drill and a screwdriver attachment for self-tapping screws. A drill, unlike screwdrivers, does not have power adjustment, and therefore when tightening self-tapping screws or screws of large diameter or to great depth, 4 scenarios are possible:

• You will break the slots on the head of a self-tapping screw or screw - a very high probability, especially when tightening at high speeds.
• You will very quickly ruin the screwdriver attachment. However, if the nozzle for self-tapping screws is Chinese, this can also happen with relatively small loads on the nozzle.
• You will break a self-tapping screw that cannot withstand the torque - not often, but it happens. The fact is that self-tapping screws, unlike screws, are pre-hardened and therefore more fragile than screws.
• You will burn the drill when tightening a large number of screws at low speeds.

I don’t think you will like at least one of these options, so it’s better to spend extra time drilling holes than to spend this time repairing the drill, buying new attachments, or unscrewing a broken screw.

How to magnetize a bat yourself

If you don’t have special magnetic attachments, adhesive tape, or electrical tape at hand, then in this case you can try to magnetize the bat yourself at home. To do this, you need to take two magnets (preferably neodymium) and place a bat between them. It’s worth noting right away that this is a very lengthy process that takes a lot of time.

You can use a battery to magnetize the bit. To do this, you need to take a piece of copper wire, remove the insulation from it and wrap it in small turns along the bit. Then the edges of the wire need to be connected to the battery, after which the bit will begin to be magnetized. However, it should be noted that in this case the magnetization effect will last a short time.

It is worth noting that today there are special devices on the market that allow you to magnetize a variety of objects and hand tools. In addition to bits, such devices are perfect for magnetizing screwdrivers. Their advantages include the fact that they almost instantly magnetize any metal object.

There are several different methods and life hacks that allow you to screw self-tapping screws into hard-to-reach places, holding them directly on the screwdriver bit, preventing them from constantly slipping off. However, if you don’t have special magnetic attachments at hand, it is inconvenient to constantly use adhesive tape or electrical tape (after all, when carrying out complex work, when you need to screw in a large number of screws, constantly wrapping them with electrical tape is very problematic). In this case, you can take two small magnets, for example from the cheapest Chinese headphones, and attach them to the surface of the bat. After this, a magnetic field will appear that will not allow the screw to break off.

Glue and sawdust

To restore a fallen piece of chipboard, you can use a mixture of glue and sawdust. You can make sawdust yourself. It is enough to take a little of the same chipboard or other wood-based material and chop it in any way.

You need to add a drop of construction adhesive (for example, PVA) to the mixture, carefully push it into the hole, and let it dry completely. Afterwards you can screw in the screw as usual. This method is ideal for lightweight doors, cabinets, and other products that will not open and close too often.

Stages of fastening work

Screw manufacturers do not always handle their products responsibly. There are screws on sale in which the screwdriver cannot be inserted into the heads at all because the slot is shallow or there are burrs in it. It's better to throw them away. When purchasing good screws, follow some rules to tighten them securely and efficiently:

• drill a hole in the first part;
• make sure that the diameter of the hole is equal to the diameter of the screw (including its smooth part and thread);
• insert the screw into the hole without force;
• drill a hole in the second part;
• check that its diameter matches the diameter of the screw, but without taking into account the thread, because the screw must fit in here with force;
• countersink a hole in the first part.

If the craftsman has a special drill that helps combine the two stages (drilling and countersinking), the process is simplified and accelerated. Keep in mind that any special drill can only fit specific models of screws.

General technology for screwing in self-tapping screws

In order for the self-tapping screw to be securely fixed in the base material, when screwing it in, the following general technology should be followed:

• Use an awl or thin drill to mark the installation location;
• Place the tip of the product in the intended hole;
• carefully screw it in so that the position of the screw becomes stable;
• then continue screwing at maximum speed (if a screwdriver is used) and maximum force;
• at the last stage, reduce the force and speed to avoid damage to the screw and the material.

The essence of mounting supports

The main material used in the construction of wooden buildings is classic timber.

Traditionally, it is in demand in the manufacture of the following elements of the structure being built:

• wooden logs used for laying (laying) floors;
• floor beams;
• elements of frame-panel structures.

The material has been used in the construction of houses for a long time. In any case, its use is possible only if there are special embedded supports for the timber. Parts are usually made in the form of perforated fastening steel blanks.

When constructing outdoor sheds, concrete foundations are usually used. During their arrangement, the embedded supporting parts are pre-filled with concrete and only after that are used for their intended purpose.

Advantages and disadvantages

The advantages of using steel supports for timber blanks include:

• increased strength of the formed joints and low consumption of starting material;
• low cost of the metal used;
• universality of use of fastening blanks;
• the presence of a special galvanized coating that reliably protects building elements from rust and significantly extends their service life.

The disadvantages of supporting structures include the complication of the assembly scheme, which reduces the installation speed. In this case, suitable sized hardware will be required.

Beam support

To fasten floor beams, rafters to the base and other similar units, an open beam support is used. It allows you to support it on a wooden base, and on a stone and concrete wall using screws and nails without preliminary drilling, reliably and quickly. Since the mounting ears point in different directions, they can be opened at any angle, not just 90°.

Another type of this fastener is the closed beam support. Its distinctive feature: the mounting ears, which are attached to the wall, are turned towards each other in such a way that in the working position the product becomes almost invisible. It is used for the same installation purposes as open. Moreover, it is possible to securely fix not only a beam of rectangular cross-section, but also another shape.

Opened and closed supports are used for the same purpose, but closed ones are considered more reliable - when attaching the timber, the ears are additionally clamped, the connection is strong and almost invisible.