| 摘要 |
PURPOSE: A screw fastening device is provided to increase a fastening force of a first fastening member using a second fastening member and to minimize the second fastening member from being loosened. CONSTITUTION: A screw fastening device comprises a first fastening member(110) and a second fastening member(140). Tensile force is added to the first fastening member so that the first fastening member fastens the first and second objects. The second fastening member is fastened to the first fastening member or the first object or the second object. A screw thread and a recess of a depth deeper than the screw thread are arranged in a lateral surface of the second fastening member. The first fastening member includes a bolt and a nut being fastened corresponding to the bolt. |
