How to screw a self-tapping screw into various materials: important nuances of a seemingly trifling matter. How to tighten screws with a screwdriver Tightening screws

Probably, there is no such person who would not know how to tighten the screw. Indeed, there seems to be nothing complicated here - a self-tapping screw, a screwdriver or a screwdriver and twist to your health. But it turns out that there are enough tricks even in such a simple operation. Screw a self-tapping screw into wood or concrete, or maybe into metal or plastic - there is a difference. We decided to dot the "i" in the question of how to tighten the self-tapping screw and provide you with advice and recommendations on this topic.

Self-tapping screw and wood

Screwing a self-tapping screw into wood - what could be easier. But, as practice shows, even this sometimes causes some difficulties. The tree can be soft or hard, you have to twist it into a thin lath or knotty place, and a self-tapping screw can be different types, which sets its additional conditions.

Self-tapping screw and concrete (brick)

You can't do without a hammer drill or hammer drill, but that's not the only trick. Our observations have shown that screwing a self-tapping screw into concrete is a very difficult operation for many, although in reality it couldn't be easier.

When screwing in, the self-tapping screw "forces" the dowel to diverge to the sides and thereby provides a secure hold inside the wall.

The self-tapping screw cannot be screwed into a brick or concrete wallwithout using a dowel. And here the questions begin: what kind of dowel should be, from what material it is better to select it, what its dimensions. This is worth a separate article, but we will briefly answer: the dowel should be selected for a self-tapping screw, or vice versa - this is the main rule. In turn, the self-tapping screw is selected for a specific task: it will be a mount for a picture or a shelf, for a hook for a towel or an mount for an antenna.
In the absence of a dowel, you can always make it yourself from wood. With the help of a hacksaw, the workpiece is sawn off from the board or rail, with the help of a knife or chisel, the future dowel is split off and with a knife it is given a rounded shape. It is desirable that one edge is narrower, the other slightly wider. Then your homemade dowel will fit snugly into the hole in the wall or floor. Many people prefer to do with factory-made plastic dowels, being afraid of rotting wooden counterparts. By ourselves, let's say that it's better for us to use homemade wood than factory made PVC. The reason is the reliability, which we have checked many times. But this does not mean at all that we do not recommend buying dowels.
When making a deepening in the wall, you must not overdo it with depth. But under-drilling is also undesirable. For example, it often happens that when screwing into the dowel, the self-tapping screw rests with a drill against the bottom of the recess and the dowel is twisted outward.
If the layer of plaster is thick, then it is better to choose a dowel and a longer hardware. Moreover, when we are talking about old buildings, where no one tried to prepare the solution properly. If the dowel is 2/3 into the plaster layer and only 1/3 into the brick, then such a fastening cannot be called reliable.

Self-tapping screw and metal

Who could have imagined 20 years ago that we would have screws (the word "self-tapping screw" was unfamiliar then) that would drill into not very thick metal. Now it has long been a reality.

Self-tapping screw and plastic

Such operations do not happen very often, but they do take place. Therefore, a few tricks from us will not hurt.

Plastic can be different: one self-tapping screw enters without problems, it is difficult to screw into the second one, since the material begins to deform, burst or crumble. It is advisable, if possible, to check on a similar piece of plastic how it will behave when screwing a self-tapping screw into it.
Self-tapping screws for plastic should not have a triangular head shape. It is best to use hardware with a hemispherical head shape or use washers.
If the plastic is thick, then it is better to drill it or use a self-tapping screw with a drill. Then it will be possible to avoid cracking of the material when screwing in the hardware.
Some craftsmen heat the tip of the screw to make it easier to screw it into the plastic. However, this method is questionable. When touching the heated hardware, the plastic is straightened and comes out slightly. When the self-tapping screw reaches the end, then its head rests against these fusion. You can proceed as follows: screw the not fully heated self-tapping screw, then unscrew it, clean the place around the hole and then screw the hardware completely.
Many questions arise about whether it is possible to screw a self-tapping screw into a plastic window. There is only one thing to worry about - not to get off the glass and the seal. PVC is flexible enough to plastic windowsso that the screw can be screwed in without problems.

Instead of a conclusion

As you can see, there are no particular difficulties. However, if a person first encounters a self-tapping screw, then, of course, many questions may arise. Hopefully we have answered all or most of them. And if there are unlit moments, then ask them in the comments - we will be happy to answer.

Self-tapping screw is a type of fastener main feature which is the ability to be wrapped in material without preliminary drilling. Despite the general simplicity and ingenuity of the design, there are many important subtleties that should be considered when handling them. Let's look at the most important and most frequently practiced ones.

How to choose the right screwdriver bit

There are two types of cross bits: PH - standard with 4 splines and PZ - modified with 8 splines. The latter are good in that they actually do not allow the nozzle to break off the hardware during operation. When choosing a nozzle, you should also take into account the size that is indicated directly on the product. Bits come in 1, 2 and 3 sizes. The correct bit ensures a secure grip.

How to screw a long screw into hard material

How to screw a self-tapping screw into a thin bar correctly

The only way to avoid cracking a thin bar when screwing in a self-tapping screw is to pre-drill. It is worth considering that most often a crack appears when trying to "sink" a self-tapping screw, which means that you should countersink with a wider drill.

How to properly work with small screws

When working with small hardware, it is recommended to use a magnetized bit. If you don't have one at hand or you can't make such a bit with your own hands, you can use ordinary masking tape to fix the screws, the consultants advise the site.

How to unscrew a self-tapping screw with torn off slots

This can be done in several ways. First, you can use a special extractor attachment. Secondly, you can put a soft material, such as rubber, between the screw and the bat. Thirdly, you can solder the bit with a soldering iron using tin, if you cannot unscrew it otherwise.

How to unscrew a self-tapping screw with a broken off head

In order to remove a self-tapping screw with a damaged or completely broken off head, you need to use a tubular drill for ceramics.

I would like to adopt even more useful tips? Then read about on the road.

It is impossible to do without fasteners in construction today. They allow you to connect different building materials, hang objects, strengthen certain structures, and more. One of the most common fasteners is the self-tapping screw. This product has an external thread and a head. The thread is comparatively sharp so that in some materials it can cut internal threads by itself. This article will discuss how to screw a self-tapping screw into the most different materials... But first, let's figure out the classification of these products.

Classification

This fastener is available in a variety of materials such as brass, stainless steel and carbon steel. Also self-tapping screws have different coatings, such as the:

galvanized (yellow);
oxidized black;
phosphated black;
without cover.

Differ in head type:

semi-cylindrical;
secret;
hex;
hemispherical.

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

Connection operating conditions.
Is it necessary to drill a hole before tightening.
What material do you need to screw it into?
What material will be attached.

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

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

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

Such self-tapping screws are used to fasten the roofing sheet material. It must be equipped with sealing rubber... As a result, the joint, in addition to strength, becomes tight.

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 used in different areas construction. Let's take a look at the details of how to screw this or that screw into different surfaces.

When decorating ceilings and walls, plasterboard is often used. And given that this material is relatively fragile, it is important to be careful when screwing the self-tapping screw into it. So, to screw the self-tapping screw into drywall, you need a screwdriver with a nozzle or a Phillips screwdriver.

Much depends on the purpose for which the self-tapping screw will be screwed into the drywall. For example, if you need to hang a small object, then you first need to insert a special dowel, which, when screwing in the screws, forms a reliable fastening. If it is necessary to screw the self-tapping screw directly into the drywall, for example, fixing it to the profile, then the technology is as follows:

On drywall, do the markings. Depending on the possible load, the step between the fasteners can be from 20 to 70 cm.
Next, put the screw on a screwdriver or screwdriver nozzle and attach it to a point.
Then you start screwing it in. If you use a screwdriver, then you should not turn on high speeds. Otherwise, there is a risk of scrolling the self-tapping screw and it will not hold anything. This also applies to doing work with a screwdriver. Don't put pressure on her. The self-tapping screw has a thread that will allow you to screw it into drywall without much effort.
It is very important to tighten the self-tapping screw so as not to break through the top layer of the cardboard. For example, if you attach a plasterboard to a profile, then a self-tapping screw with great effort can simply fall into the cardboard. So, the head of the self-tapping screw should slightly press the top layer of the cardboard. But don't leave it undercooked. Otherwise, you will have difficulties when puttingtying.

The diagram shows correct and incorrect twisting:

After tightening, the head of the fastener must be 1 mm below the general surface level. This will ensure sufficient tension.

What if you failed to successfully tighten the screw and it broke through the cardboard? In this case, unscrew it back, putty the hole, and screw in a new self-tapping screw at a distance of 50–80 mm.

As for the type of self-tapping screw, its choice depends on the material used for the lathing, whether it is wood or metal. As for the length, it is enough that it fits into the profile up to 10 mm.

As for screwing a self-tapping screw into metal, only fasteners for metal are used here. The screwing method depends on the thickness of the workpiece. If it is a thin sheet, then often it can be tightened without much effort using a screwdriver or screwdriver. Moreover, there are different types self-tapping screws. Some have a small drill on the tip with sharpened teeth, as shown in the picture.

But as practice shows, not all such self-tapping screws can be screwed into metal, this is due to the weak sharpening of the drill. So, a screwdriver is used to tighten them. You should not gain high speed, otherwise the self-tapping screw may overheat and quickly become dull. These fasteners can be used for metal up to 7 mm thick.

If the metal is too thick, then the best option there will be a preliminary drilling of the hole with a drill / drill, and after screwing the fasteners into it. This method is not associated with any problems.

When making a hole, remember that it should be smaller in diameter than a self-tapping screw. When the hole is ready, it can be lubricated with machine oil. This will allow you to tighten the screw without much difficulty.

The self-tapping screw used for metal should be made of solid steel, which is harder than the product.

As for the tree, everything is very simple here. The only restrictions may be imposed by the type of wood used. If it is soft, you do not need to pre-drill the hole. If the workpiece is made of chipboard or fiberboard, then it is better to drill a hole. Moreover, it is recommended to drill the hole in cases where it is necessary to tighten long self-tapping screw on wood. This even applies to soft wood.

When making a hole, its diameter should be smaller than that of a self-tapping screw. This will ensure that the workpieces are securely fastened.

In addition, the hole should be made even in cases where the wood workpiece is relatively thin and there is a risk of splitting. When screwing a self-tapping screw into such parts, you need to be careful.

When screwing, the cap should sink into the wood. If this is a finished floor, then all holes must be covered with wood putty.

If we talk about concrete, then this is, of course, a solid material and for screwing a self-tapping screw into it, you cannot do without an impact drill or perforator. It is worth noting that in this case, the screw can be combined with a plastic plug from the dowel for tightening. The work of screwing a self-tapping screw into concrete looks like this:

Drill a hole in the wall to the required depth. The hole diameter must match the diameter of the plastic plug.
Next, remove dust from the hole.
Then insert a plastic stopper into it.
Finally, use a screwdriver or screwdriver to tighten the self-tapping screw.

If the walls are plastered, then you can try to tighten the self-tapping screw without making a hole. You will definitely be able to do this if the plaster is not too hard, especially if it is made on the basis of clay. In this case, you will need a self-tapping screw for wood with a rare pitch of turns.

So, we examined with you the technology of how to properly screw a self-tapping screw into different materials. If you know about other techniques, then be sure to write to us about this in the comments to this article.

Video

You can visually familiarize yourself with the method of screwing a self-tapping screw into metal from our video:

This video shows the original method on how to screw a self-tapping screw without a tool:

Among the self-tapping screws, two main types are distinguished, which are determined by the thread pitch:

self-tapping screws are universal.

The former are characterized by a larger thread pitch. Thread turns during its manufacture are applied less often. Some people mistakenly believe that universal screws are suitable for working with wood, plywood, chipboard, fiberboard. This is only partially permissible. Screw a universal self-tapping screw or screw into a wooden surface, which is essentially the same thing, of course, you can, but it will stick there worse than a specialized one, i.e. designed for wood. The material where the self-tapping screw is screwed must fit securely into the thread groove. The toughness of wood will not reliably lie in the groove of the universal self-tapping screw, since this groove is very narrow. In this regard, it is still recommended to apply for all wooden surfaces specialized types of wood screws.

Self-tapping screws are produced with the most different sizes hats. In addition, the geometry of the screwdriver pocket is also different. Self-tapping screws with a recess for:

phillips screwdriver
flat screwdriver,
special screwdriver,
keys.

Cruciform grooves also vary in size and shape. In connection with such a rich assortment, you have to have not just a screwdriver, but a screwdriver or screwdriver with special replaceable nozzles, which allows you to screw in screws of any kind and type without any problems. It is desirable to have the maximum number of such nozzles.

Nozzles

During operation, the nozzles wear out, and they need to be periodically updated, otherwise it will be painfully difficult to carry out the screw tightening process. When choosing attachments, be sure to pay attention to what material they are made of. It is better to purchase models from special tool steels, which are added with strengthening additives during production.

There are a lot of manufacturers of nozzles, so only with experience will you understand which one is most suitable for you. Most attachments only have a one working day reserve if you need to use them thoroughly and continuously. Once you have found a suitable option, purchase several sets from the same batch in advance. When purchasing a set for the first time, be sure to check all attachments for their match to the head of your self-tapping screw. One of them will seem to you the most suitable, so do not dwell on the first one you try on.

Screws can be screwed in with a screwdriver with an electric drive or battery, or with a screwdriver. With one-time work, it is quite possible to do with a screwdriver with nozzles, but if you need to constantly screw in the screws, a screwdriver is unlikely to suit you. Even a few screws are easier to tighten with a screwdriver. Screwing in with a screwdriver is a complicated operation. It will take skill and effort. Having good screwdriver you can not be afraid of any screws and wrap them easily, simply and quickly, and exactly where you planned.

Choosing a screwdriver

After choosing a screwdriver, and not a screwdriver, be sure to check whether it is comfortable to hold it in your hand. All screwdrivers have handles of different shapes and sizes. It is best to choose a handle made of wood or rubber, and quite thick. Never use varnished wood. Plastic is a bad option for a screwdriver handle because it slips in your hand. Currently began to appear on sale soft plastics, similar in properties to rubber. In any case, be sure to hold it in your hand, because it should be convenient for you to work with it.

Choosing a screwdriver

In the event that you decide to choose a screwdriver, decide whether it will be a battery model or not. Cheap and standard cordless screwdrivers are hardly suitable for intensive work. They are not designed for long periods of inactivity and will require constant manual control from you to charge the battery to avoid overcharging. Since it is rarely possible to keep track of the charging of the battery, it usually takes about 30 to 50 cycles.

If you intend to work with a cordless screwdriver all the time, buy a professional cordless model, or choose a non-cordless tool that is powered from the mains. In fact, the latter is conventional drill, but equipped with a number of additional functions. Such a tool on sale can be found under the name "drill" and under the name "screwdriver".

Most importantly, make sure that the model you choose has a gearbox. It is designed to adjust the speed of rotation that is required during operation and depends on how much the trigger is pulled. The minimum speed indicator is from 0.5 rev / sec. Also, the selected model should have a reverse, since sometimes it is necessary to turn out the screws when dismantling.

How to unscrew and then tighten the screw again.

How to screw a self-tapping screw into various materials: important nuances of a seemingly trifling matter

How to screw in a self-tapping screw - Re-tightening a screwed-out screw

Plastic

Not all plastic allows you to screw a self-tapping screw into itself. Make sure you screw the self-tapping screw into a suitable plastic. Screw the self-tapping screw in the same way as in soft metal, with the exception that it is better to take the self-tapping screw itself with wood carving.

Hard metals

The hole for the self-tapping screw should be equal in diameter or slightly larger than the diameter of the unthreaded pin. It is impossible to screw a self-tapping screw into some metals, for example, cast iron.

Wood, chipboard, fiberboard

I still recommend drilling a hole for a self-tapping screw in these materials. Some masters do not always do this. There are times when this is possible. If the self-tapping screw is screwed into a thick softwood board, drilling is not necessary. Thin boards, chipboard, fiberboard must be drilled, since otherwise the self-tapping screw can split the board when wrapped. If the wood is hard (oak, ash), then drilling is also necessary so that the self-tapping screw can be screwed in at all. For hard wood, the diameter of the drill is chosen equal to the diameter of the self-tapping screw without thread, for fiberboard - 1 - 1.5 mm less, for soft wood and chipboard - 2 - 3 mm less. We use self-tapping screws with wood thread.

Knot

The self-tapping screw can split the knot. So first we drill a hole with a diameter of 1 mm larger than the diameter of the self-tapping screw without thread. Then we carefully screw the self-tapping screw into this hole.

Re-tightening the unscrewed self-tapping screw

It is necessary to re-tighten the unscrewed self-tapping screw exactly as it stood before. It is necessary that it enters at the same angle, in the same groove that the thread made the first time. Otherwise, the self-tapping screw will make itself a new groove, which will reduce the reliability of the fastening and can lead to the self-tapping screw flying out. To get into the existing groove, insert the screw into the hole and turn it by hand without pressure. Once it enters the groove, it will twist very easily. If it goes hard, no effort is needed, but you need to unscrew it and repeat the process. A little effort is needed only at the very end of screwing. It is better to re-tighten the self-tapping screw with a screwdriver, and not with an electric screwdriver, as this turns out to be more accurate.

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Types of self-tapping screws

How to tighten the screws

Screw-in process

Fastening parts with self-tapping screws

Screwing a screw into different materials

Brick, cement plaster, screed, cement slabs, ceramics (tiles)

Soft metals. Copper, aluminum, bronze, duralumin, etc.

Plastic

Hard metals

Wood, chipboard, fiberboard

Re-tightening the unscrewed self-tapping screw

To the section ‘Life outside the city’

To the section ‘Do it yourself’

START COPY CONFERENCE

Switching to the graphic version

any: restoration of screw holes

0. Anatoly513.03.13 20:20

Sometimes it happens that the screw in the plastic is blown through. Who decides how this issue?

1. ASSP13.03.13 20:27

Hmm ... If you follow the laws of physics, then, in this case, you must either "add" material to the hole, or increase the diameter (or change the thread pitch) of the screw ...

2. CAT13.03.13 20:46

... there are many options - everyone chooses the one that is more convenient for him.
From observations 😉 - sometimes they bring equipment for repair with rolled threads in plastic and self-repaired. Options that I met:
1 placeby repeatability: a piece of a match or a toothpick is thrust into the hole and a screw is twisted along it (in principle, it is logical - a piece of a match reduces the diameter of the hole and the screw does not scroll, it holds ..), well, as options - instead of a match, either a piece of foil or a thin piece plastic (most often a piece of plastic clamp).
2nd place: Installing a larger diameter / length screw in this hole (depending on whether the space allows for larger screws).
3rd place: Various adhesives or hardening fillers ... ... even a couple of times I happened to put a screw on something like super glue. Oddly enough, the screw still loosened with a lot of effort (and even in the frozen glue the thread remained, so the screw screwed back normally ..), but in one case, squeezed out of the hole by the screw, the glue got into the gap between the parts to be connected - the screw I unscrewed it, but in order to corrode the stuck together surfaces I had to work with a chisel. Only miraculously split the plastic.
4th place: People just hammer in ... ... not in the sense of hammering the screw with a hammer, but inserting the screw into the hole and hammering into the fact that he does not hold anything, at which he does not even always insert the screw into the hole - clogs into the fact that there is no screw ...

3. Contrabas13.03.13 20:55

And people also came up with epoxy glue and plastic, which dissolves easily in acetone. But this is not good when there is no time to get rid of ..

4. mhz8613.03.13 20:57

i mainly use
CAT (2): 2nd place
The holes in the rails of the table were badly broken on the FC "copier. I drilled a larger diameter, processed it with a file so that the plastic axle would fit very tightly (the axis of the mf 6550 stove flag), put it on glue and drilled a hole for standard screws ...

Contrabas (3): when there is no time to get rid of .. CAT (2): People just score

Edited 20:57 03/13/13 mhz86

Self-tapping screws split the bars….

CAT13.03.13 20:57

Contrabas (3): plastic that dissolves easily in acetone. - well, yes - drop two or three drops of dichloroethane into the hole and insert the screw ...

6. Contrabas13.03.13 21:05

(5) Oh yeah ..
Sometimes they bring this .. Cartridges with construction screws, and instead of pins too .. There are such holes that I want to call a hole ..

7. ASSP13.03.13 21:51

(6) "When the area of \u200b\u200bthe" hole "begins to exceed the area of \u200b\u200bthe product, then such a product is considered invalid." The saying of my school master on "labor" ...)))

8. Contrabas13.03.13 22:04

(7) You see a good master, competent, since you remember ..)) Such people often come to us that they didn’t have a school master for labor, physics and many other things .. They cannot hammer a nail at home, yes Tighten the telephone socket .. (

10. Ingmar13.03.13 22:35

when the holes are not just smashed, but ripped out with a piece of plastic, I use a mixture of baking soda and cyanoacrylate. The resulting mass is perfectly drilled, processed with a file and firmly adheres to the plastic. the only negative freezes in less than a second.

11. ASSP13.03.13 22:41

(8) Let the moderators forgive me once again - I was generally very lucky to have teachers. The same master I mentioned taught me how to work on a lathe and milling machines and hold (and use) correctly (and this is much more difficult than any machine tools) a screwdriver, hammer, chisel, etc. They were good teachers in the old days.)))
Only with a chemistry teacher, and I was out of luck. Her surname was (who wants - believes, and who wants - does not) Kaplan ... Probably everyone will guess what the first question I asked her when "meeting".)) After that I did not rise above the "triplets" in chemistry and "honors "Covered himself with no less great" copper basin ".)))

12. Andrew14.03.13 00:48

specially for these purposes there is a jar of dichloroethane with a plastic cap dissolved in it from the 5.25 computer slot to the consistency of thick sour cream. A couple of drops into the hole, and insert the screw. The next time the cartridge comes in, it twists and turns wonderfully. And in general, he restored a lot of things with this mass, but recently he became addicted to hot glue (although it does not fit for carving - it sticks to a screw more than to plastic)

Printers, copiers, MFPs, faxes and other office equipment:
questions of repair, maintenance, refueling, selection
Switching to the graphic version

Close up the hole in the closet door

Round hinges on the doors of the chipboard cabinet loosen over time and pop out. Since such loops and elements from this building material have a certain service life, then you cannot avoid repair.

It is not always possible to completely change the sash, so we offer a way to seal the damaged hole. There is only one way out - to make a wooden patch, to which the old hinge is then screwed on, and your cabinet will serve you for quite a long time.

The wood patch is made from hardwood and cut into shape dovetail... To do this, remove the old sash and drill a hole of the appropriate shape in it. It is necessary to drill a hole in the sash as large and deep as possible - this way the screws of the fasteners will hold better. This must be done carefully so as not to damage the sash veneer. To do this, put a wooden plank on the bottom of the hole to be drilled, which will prevent the cutter from coming out to the outer surface of the sash. The patch must be precisely adjusted to the sash opening, carefully sanded and painted in the same color as the rest of the sash rear wall surface.