1. Using a manual screwdriver, select the corresponding screwdriver according to the groove shape of the self tapping screw. Align the screwdriver's mouth with the groove shape of the screw, align it with the desired position for connection and tightening, directly squeeze the screw with force, rotate the screwdriver in hand clockwise, and gradually rotate the self tapping screw into the workpiece until the entire screw thread is no longer inside the workpiece.
2. Using electric tools is more convenient and easy to install. Its working principle is the same as a manual screwdriver, but using an electric screwdriver allows for faster and easier installation of self tapping screws.