This type of screw (precisely drilling) enables direct drilling. How to do this? Thanks to tight tolerances. Drilling screws, then, form your own nut. The latter creates tap off the inside of the hole.
The nut is a piece drilled and tapped to receive a screw which is bread in his thread.
What are the benefits of perforating screws?
The special shape of the drill head is made for cutting, a process of plastic deformation that makes the cut. Which advantages gives this special form of drill head?
- Prevents slippage on the particular surface to attach
- Allows a fast drilling
- Makes punch mark¹ unnecessary before drilling
What other benefits are there?
In addition to the benefits described above we can list other equally important. In fact, when using armour-piercing screws.
- don’t need drilling tools
- you delete:
- the pre-drilled holes
- non-aligned holes in the parts to be assembled
¹The punching is an incision made with a graver, a steel tool similar to a thin chisel used to etch metals, leather and hides.
What are the applications?
The applications (only for aluminum and light metals) as:
- sheet metal constructions
- heating and ventilation ducts
- large household appliances sector (white goods industry)
- doors and windows
- plasterboards
- construction of facades
- others
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