Self-tapping screws, mainly made of carbon steel or stainless steel, are widely used on plastics, metal and
wood materials. 
The best part in the use of self-tapping screws is that there is no need to drill holes before they are used. 
The two basic types of self -tapping screws are thread-forming screws and thread-cutting screws. The
thread-forming screws are commonly used for plastic, deforming the material as the screws enter. The 
thread-cutting screws are typically used for wood and metal, removing some of the material and creating 
a threaded path for the screw.
Features of Self-tapping ScrewsSelf-tapping screws with press washer made of galvanized steel for various 
applications: fastening siding, corrugated board and other sheet materials, as well as fastening various types of
 profiles from thin sheet steel.
* Easy to screw in.
* High hardness.
* Both high and low temperature resistance.
* High tensile strength value.
* Various surface treatment for corrosion resistance and rust resistance.
* Different choices of colors.* Long service life, durable enough to handle repeated assembly and disassembly.
Head highlighting
surface treatment:black phosphated tapping point
Tip highlighting
surface treatment:blanco zinc coated with tapping point