Features

• Cross-sectional shape of the thread part of the FT screw, outer diameter is hexagonal, and valley diameter is circular.
• Stable female thread machining and tightening can be performed simultaneously by plastically deforming the mating material at the apex of the hexagonal section.
• The apex of the hexagonal part of the FT screw is twisted at an angle of approximately 12 °.
• Therefore, the screwing torque is small and can be tightened with stable torque.