In almost every area of construction, self-tapping screws are now used. Without them, it is impossible to install lining, plasterboard sheets, siding, fiberboard and particle boards, OSB and many other products. And today we’ll talk about consumables such as metal screws with a drill.
What it is?
Externally, these devices resemble ordinary screws, but there is still a difference, and a significant one - the tip of the product is a small drill. Thus, metal screws with a drill first cut through the sheet, and then, thanks to the threads, are screwed into it. A metal cap allows you to securely fix the element on the work surface. Moreover, the time and labor required to screw them in is minimal.
Appointment
Screws for metal with a drill are designed to connect and fasten sheet iron to other steel and wooden structures. Moreover, the said fastener is capable of being screwed into the surface without preliminary drilling, if its thickness is 2 millimeters.
Construction and materials
As we have already noted, metal screws with a drill consist of three elements:
- small drill;
- thread, the turns of which occupy most of the area of the entire product;
- hats, which does not allow the self-tapping screw to scroll further.
Often in construction, fasteners with a drill having a thickness of 3.5 to 4.8 millimeters are used. The self-tapping screw itself is made of high-strength carbon steel, and on top it is covered with a special protective layer. The head (hat) of the product is made in the form of a hemisphere with a stamped washer. As for the thread, it is double in such self-tapping screws, which allows better fixing of the product in a metal base.
It is also worth noting such a type of device as metal screws with a drill and press washer. Such consumables are used to securely fix metal and wood structures to sheets and profiles without first drilling the surface.
K roofing screws for metal: price
The cost of these products is almost the same as ordinary screws that do not have
special drill tip. As a rule, they are bought in bulk: 10 thousand units in the Russian market can be purchased for only 100-150 rubles. If you want to buy metal screws by weight, the price per kilogram will be approximately 144 rubles.
Conclusion
Due to its simple, practical and reliable design, these devices are widely used in any decoration, installation and simple design of metal frames and structures. Using these self-tapping screws in the construction industry also has its advantages: you do not need to drill holes for thin sheets of steel, and this in turn greatly speeds up and simplifies the work. At the same time, other types of such devices are also widely in demand and are used in many sectors of construction and simply for housekeeping.