[Features] Half ball point processing is applied to the tip of the short side. By making it a half ball, it is easier to approach the hexagonal hole than conventional products. By using half-ball processing, it is easy to insert and achieves the same level of torque transmission power as conventional products. The screw can be turned from a maximum tilt angle of 32°. In order to ensure uniform and high-precision refining (heat treatment) hardness (HRC60°±1°), instead of using a continuous furnace, we adopt a completely non-oxidizing and decarburizing correction quenching method using a closed furnace. Final tightening is possible even with a ball point using a pipe handle. Colors are partially painted so that the size can be determined at a glance. A special chrome plating surface treatment provides excellent wear resistance and will not rust for a long time.
