Phillips Head M4 X 20 mm Bolt (Mounting Screw with washer for PCB) -

Bolts are made of mild steel, which has high tensile strength. Installing them straight into a suitable female threaded hole on an application is another option for utilising them without nuts. These bolts may be used in small/medium or heavy-duty connections, as well as in DIY projects, and are most commonly used in robots chassis construction. "-" Type screwdriver can be used to screw or unscrew these M4 Bolts.