Self tapping screw

Self tapping screw with high tension, sheet, unilateral combination characteristic. Self tapping screw more used to the thin metal plate (steel plates, plates, etc.) the connection between the. Connection, the first to be fitting to produce tap, then will be fitting the self-tapping screw into the tap.Due to the self tapping screw thread surface has high hardness (45 HRC) or higher, can attack by fitting the tap of the internal thread, forming a connection.