The M4 extra-flat head Nickel-plated screws are sturdy steel pieces with a nickel finish to provide anti-corrosion protection. They are available in different length measurements. The dimensions of this screw refer to a length of 8 mm with an extra-flat head that is 1.2mm thick and 10mm in diameter. This screw connects to the M4 extra-flat head nut precisely. It comes in a package of 2000 units of screws and is widely used to secure parts where you need the screw head to be as flush as possible with the screwed surface.