The Self Tapping Screws into four main design and development process, and another two for the special screw thread design, the first one is; the level of dental self-tapping screws (High C Low Self Tapping Screws) - used in plastic or other low-density material. Dual-thread design, high-thread (outer diameter of the larger teeth) even more acute with more level angle of 30 degrees screw thread type. Low thread (outer diameter of smaller teeth) has a thread angle of 60 degrees, only the high high teeth half of threads. a combination of high and low thread design reduces the rotation torque, pullout strength has improved, dramatically reducing the combined risk of rupture of the other parts used in the construction industry on a dry wall (Drywall) The assembly purposes., with Such Self Tapping Screws thread design is particularly suitable for plastic, wood panels and parts.