Nagel on concrete - characteristics and application in
The density of concrete in many ways is very high, which makes it an ideal building material for the construction of walls and floors. However, it is very difficult to install fasteners for shelves, chandeliers and other "mounted" parts of the interior. In this article we will look for a solution to this problem, and the nog will help in this.

What is it and where is it applied
It is a conventional screw with a reinforced rod and hex head, which can be screwed into the concrete.
In addition to small items, they can be used to strengthen:
- door frames;
- frames;
- fencing;
- pipelines;
- heating radiators.
Below we will understand in more detail the types of such fasteners, as well as how to use Nagel on concrete correctly.

Kinds
Hardware products used for installation in concrete surfaces are usually classified according to the following features:
Head shape |
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Type of protective coating |
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The shape and pitch of the thread on the rod |
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The shape of the head directly affects the installation of the screw. For example, screws in the form of hooks and studs are allowed to be installed only in the hole, pre-drilled and with a dowel. Other self-tapping screws are screwed in with or without drilling.

For example, screws with hex or countersunk head are screwed in without drilling a hole. However, not every concrete is suitable for such installation.

Tip: Cellular concrete is best, and reinforced concrete is not suitable for this installation method.
The price of self-tapping screws depends on their sphere of application, the shape and pitch of the thread, and the length of the hardware is also affected. With the "herringbone" products will be cheaper nogers and universal, and a screw with a length of 12 mm will cost less than 200 mm, since less material and working time will be spent on it
Choose and install the screw
Usually, screws for concrete are selected according to the size of the load that they will have to withstand due to the weight of the interior details. For example, to support 100 kg, you will need a self-tapping screw with a length of 160 mm and O10 mm, while a shelf weighing 5 kg will be held by a self-tapping screw with a length of up to 25 mm and O3 mm.

After determining the type and size of the product, you can proceed to the installation procedure. In this case, the dowel and universal screws are allowed to be screwed into the wall (floor or ceiling) immediately, without doing the preliminary drilling of the base, while at the same time it will be necessary to tinker with the herringbone screw.
Tip: the screw with the "herringbone" should be installed in the mounting hole, the diameter and length of which should exceed its dimensions by 5 mm.
This is due to the fact that after drilling, it is required to install a dowel (preferably in the tension). It can be from polymeric materials or wood, its main duty is to accept and hold fasteners. You can screw the screw into the dowel with your own hands with an ordinary screwdriver.
Tip: after drilling a hole, remove dust from it.

It is important to properly use the screw, otherwise it can simply break off. It is necessary to tighten the screw with a non-invisible head with a certain effort, making sure that during the process it is not broken by elementary drawing. You can also break off the head due to the high temperature of the screw body when screwing into the concrete.
Conclusion
From the article you learned that concrete is considered one of the most practical materials for placing various elements on its surface. To do this, use metal products in the form of screws, anchors and, of course, dowels, which differ from others in the possibility of screwing the ceiling or the wall into the wall without first preparing the mounting hole.
The latter has a different shape of heads and is used for exterior and interior work. The video in this article will help you find additional information on this topic.