Self-tapping screws are mostly used when the medium into which it will be screwed is something like metal. Although, self-tapping screws are also used to drill wooden and plastic materials.

They tend to have a sharp point, and the threads are also sharp to act like knives cutting into any medium

The Countersunk Head Screw, also known as CSK Head Screw. This kind of screw is characterized by the unique design of its head: its “flat-head” screw sinks into the surface and rests flush with materials. For this screw may countersink into the material, it's called Countersunk Head

Click here to visit our corporate site to learn about more products.