M3X4/D7985 is a metric-sized machine screw from Kraftberg, a company that specializes in fasteners. It features a coarse thread profile and is made of low carbon steel. The M3X4/D7985 screw measures 3mm in diameter by 4mm in length and has a flat head type with a standard Phillips drive. It has a bright zinc plated finish for corrosion resistance and is often used for a variety of applications, such as joining two components or fastening components to a panel.