Concrete self-tapping screw is a type of screw made of very high quality steel. This is a rod-shaped screw, on which the thread is applied by a variable method. This threading method provides maximum fixation and a high level of adhesion to the concrete wall. The self-tapping screw has a pointed pointed shaped structure and a head for screwing in mainly a cross-shaped shape. Its surface is covered with an anti-corrosion compound, which ensures its long-term resistance to moisture and dampness.
This type of screws, depending on the purpose, has a different length, but in the thickness they remain unchanged. They are very convenient in operation, since they imply containment of large masses, while not being deformed. In some cases, when it is necessary to install a self-tapping screw on concrete, special dowels are not required for this, but for greater reliability, experts still recommend using them. It happens that during the installation process, the screws break.
To avoid traumatic consequences, it is necessary to adhere to safety rules.
Concrete screws without drilling
It happens when there is a need to make a self-tapping screw into a concrete wall, and there is no suitable tool at hand. In this case, the installation of self-tapping screws will be much more complicated, because it is quite difficult for a concrete wall to make a hole without a drill. In this case, the "people's" advice will help: you just need to hammer a self-tapping screw into the wall with a hammer. But it should be borne in mind that this method is applicable only if the self-tapping screw used is intended to hold paintings or other items of minor weight. For kitchen cabinets, for example, this method will not work, since self-tapping screws will fall out under the force of weight.
In this case, it is better to get a drill and make screws in the dowels.
How to screw a screw into concrete
To carry out this manipulation, you will need a drill or punch, directly self-tapping screws and an ordinary screwdriver. To begin with, a hole is drilled in the wall to a depth equal to or slightly greater than the length of the self-tapping screw itself. The screw itself is inserted directly into the resulting hole with a screwdriver. For durability of operation, it is recommended to put a small fragment of a match or a toothpick into the hole, in which case the self-tapping screw wedges tightly into the wall and does not fall out. It should be noted that when a self-tapping screw is screwed into concrete, it is better to use a screwdriver than a puncher, since at high speeds the self-tapping screw can make the hole thicker, which can subsequently lead to its loss. It is also necessary to pay attention to the head of the self-tapping screw, if it is a cross head, then the screwdriver must be selected accordingly, otherwise the screwing will be delayed.
The use of self-tapping screw
So, from all of the above, it becomes clear that in order for a self-tapping screw on concrete to be in the wall for a long time, while at the same time holding certain loads, it is better to use a drill to install it, and bait into the wall or on the dowel (if it is supposed to contain large masses), or by placing any wooden backing in the hole (suitable for shelves, paintings, etc.).