Without fasteners to do today in construction is impossible. They allow you to connect different building materials, hang objects, reinforce certain structures and so on. One of the most common fasteners is a self-tapping screw. This product has an external thread and a head. The thread is relatively sharp, so that in some materials it can cut the internal thread itself. This article will discuss how to screw the screw in a variety of materials. But first, let's look at the classification of these products.
This fastener is made of different materials, such as brass, stainless and carbon steel. Also self-tapping screws have different coverings, such as:
- galvanized (found in yellow);
- oxidized blacks;
- phosphated black;
- without cover.
Differ in head type:
The use of one or another 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:
- The operating conditions of the connection.
- Is it necessary to drill a hole before tightening?
- In what material you need to twist it.
- What material will be attached.
Starting from this, you make the appropriate choice, whether it will be a screw on metal, wood or for concrete.
The main difference between wood screws is a rare thread, unlike their counterparts intended for metal. Such fasteners can be black, golden and white. So, if it is necessary to fasten a golden loop on the door, then a golden screw is selected accordingly. In most cases, the choice falls on the black screw.
As already mentioned, the thread on such a screw has a frequent step. This is due to the fact that the metal is sufficiently hard material, so the clutch must be made durable. Moreover, some metals should not be drilled beforehand, for example, tin. As for the thicker metals, you will need to make a hole.
Such screws are used for fixing the roofing sheet material. It is necessarily equipped with a sealing rubber. As a result, the connection in addition to strength, becomes hermetic.
Furniture or Confirmat
This type of screw requires pre-drilling holes in the furniture blank. For its twisting the hex key is used.
These are perhaps the most common types of self-tapping screws, which are used in various areas of construction. Let's look at the details of how to screw one or another screw into different surfaces.
When finishing the ceiling and walls are often used drywall. And given that this material is relatively fragile, it is important to be careful when screwing a screw into it. So, to tighten the screw in the drywall will need a screwdriver with a nozzle or a Phillips screwdriver.
Much depends on the purpose for which the screw will be screwed into the drywall. For example, if you need to hang a small object, you must first insert a special dowel, which, when tightening the screws, forms a secure mount. If it is necessary to screw the screw directly into the drywall, for example, fastening it to the profile, then the technology looks like this:
- On the drywall perform the markup. Depending on the possible load, the step between fasteners can be from 20 to 70 cm.
- Next, put the screw on a screwdriver or a screwdriver attachment and stick it to the point.
- After you start to screw it. If you use a screwdriver, then you should not include high speed. Otherwise, there is a risk to roll the screw and it will not hold anything. This also applies to the performance of the screwdriver. Do not push it. The screw has a thread that allows you to effortlessly twist it into drywall.
- It is very important to screw the screw so as not to break through the top layer of cardboard. For example, if you fasten a giprock to a profile, then a screw with great effort can simply fall into cardboard. So, the screw head should lightly press the top layer of cardboard. But do not leave it undistorted. Otherwise, you will have difficulty patching.
The diagram shows the correct and incorrect twisting:
After tightening, the fastener head should be 1 mm below the general surface level. This will ensure sufficient tension.
What if you failed to successfully tighten the screw and he broke through the cardboard? In this case, unscrew it back, fill the hole, and screw in the new screw 50–80 mm apart.
As for the type of self-tapping screw, its choice depends on the material used for the batten, whether it is wood or metal. As for the length, it is enough that it entered the profile up to 10 mm.
As for the twisting of the screw into the metal, here only fasteners for metal are used. The method of twisting depends on the thickness of the workpiece. If it is a thin tin, then it can often be tightened with little effort using a screwdriver or a screwdriver. Moreover, there are different types of screws. Some have a small tip on the point with sharpened teeth, as shown in the picture.
But as practice shows, not all such screws can be screwed into metal, this is explained by a weak sharpening of the drill. So, for their twisting screwdriver is used. Do not gain high momentum, otherwise the screw can overheat and dull quickly. Such fasteners can be used for metal thickness up to 7 mm.
If the metal is too thick, then the best option would be to pre-drill the hole with a drill / drill, and after twisting the fastener into it. This method is not associated with any problems.
When making the hole, remember that the diameter should be smaller than that of the screw. When the hole is ready, it can be lubricated with engine oil. This will allow to tighten the screw without much difficulty.
The metal screw used should be made of hard steel that is harder than the product.
As for the tree, everything is very simple. The only restrictions may apply to the wood species used. If it is soft, then you do not need to pre-drill a hole. If the workpiece is made of chipboard or fiberboard, then the hole is better to drill. Moreover, it is recommended to drill the hole in those cases, if it is necessary to twist a long screw on the wood. This even applies to soft wood.
In the manufacture of the hole, its diameter should be smaller than that of the screw. This will ensure reliable fastening of the blanks.
In addition, the hole should be made in those cases where the wood harvesting is relatively thin and there is a risk of splitting it. When twisting the screw into such parts you need to be careful.
When tightening the cap should be embedded in the wood. If this is a finished floor, then all the holes must be covered with wood putty.
If we talk about concrete, then this is definitely a solid material and for screwing a screw into it you just can’t do without a hammer drill or a puncher. It is worth noting that in this case, for tightening the screw can be combined with a plastic stopper from the dowel. The work of screwing the screw into the concrete looks like this:
- In the wall, drill a hole of the desired depth. The diameter of the hole must match the diameter of the plastic tube.
- Next, remove the dust from the hole.
- After you insert a plastic plug into it.
- In conclusion, using a screwdriver or a screwdriver, tighten the screw.
If the walls are plastered, then you can attempt to tighten the screw without making a hole. You will definitely succeed in doing this if the plaster is not too hard, especially if it is made on the basis of clay. This will require a screw on the tree with a rare step turns.
So, we have considered with you the technology of how to properly tighten the screw in different materials. If you know about other methods, be sure to write us about it in the comments to this article.
Visually familiarize yourself with the technique of screwing the screw into the metal from the video we offer:
This video shows the original method of how to tighten the screw without a tool: