Machine screws can have different types of heads, including flat, round, oval, pan, and truss, among others. The choice of head type depends on the specific application and desired aesthetic. These screws are commonly used in industries such as manufacturing, construction, electronics, and automotive. They provide a secure and reliable fastening solution for a wide range of mechanical and structural assemblies.

Self-tapping screws come in various types, including those with different head styles such as flat, pan, round, hexagonal, or truss heads, each suited for specific applications. Additionally, they may feature different types of threads, such as fine or coarse, depending on the material being fastened and the desired level of grip.

The design of a self-drilling screw typically includes a drill-like tip with a sharp point and cutting edges. As the screw is rotated clockwise, the tip penetrates the material, creating a hole slightly smaller than the diameter of the screw shaft. Simultaneously, the threads on the screw shaft engage with the material and begin tapping, forming matching threads in the newly drilled hole.