An M3x8 screw is a type of machine screw that has a metric thread size of 3mm and a length of 8mm. It is typically made of steel or stainless steel, and has a cylindrical shape with a pointed tip. Machine screws are used in a wide range of applications such as securing parts in machinery and electronics, and are typically tightened using a nut or threaded hole. M3 screws are considered as small screws and are commonly used in electronic projects, computer hardware, and other small mechanical devices.

These are M3 screws provide a secure way to install circuit boards, sensors and mechanical mounting.