| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a screw capable of being easily used and reducing labor. SOLUTION: The screw is provided with a nail head part 11 rotated by a rotation tool; a body part formed to a parallel or approximately parallel rod shape; and a terminal end part formed to a sharp shape. The body part has a helical part 13 having a screw structure at a former part and a rod-like nail body part 12 having no screw structure at a latter part. The terminal end part is formed on the nail body part 12 and is formed to a conical sharp shape or a polygonal sharp shape. The nail head part 11 extends from a front end part of the helical part 13 and is formed in hittable by a nail, in insetable by a screw or in returnable by a screw. After the screw is positioned by hitting the terminal end part into an object, it is rotated and tightened. Accordingly, the screw can be easily used and can reduce labor.</p> |
