SCREW WITH MULTI-HEXAHEDRON HEAD

摘要

The present disclosure provides a screw with multi-hexahedron head. A head of the screw includes at least two hexahedrons which are parallel with each other. Each surface of the at least two hexahedrons is a parallelogram and parallel with the opposite face. A short height of a parallelogram bottom surface of each hexahedron is less than or equal to width of an opening of a T-shaped groove. A long height of a parallelogram bottom surface of a first hexahedron is equal to the width of the opening of the groove. A long height of a parallelogram bottom surface of a second hexahedron is greater than the width of the opening of the groove.