Patent ID: 11867221

Abstract:
The present disclosure relates to a stud improved to prevent loosening of the stud press-fitted into a sheet metal by increasing a resistance force against a torque.The stud includes a body provided to be inserted into a stud mounting hole formed on the sheet metal and formed with a screw thread to which a screw is fastened therein, a flange provided on one side of the body to have a larger diameter than the stud mounting hole and press-fitted into the sheet metal, and a rotation preventer protruding from the flange to have a diameter larger than the stud mounting hole and smaller than the flange and press-fitted into the sheet metal to prevent rotation of the stud, wherein the rotation preventer includes a plurality of rotation preventing protrusions having asymmetric shapes, and each of the plurality of rotation preventing protrusions includes a rotation preventing surface provided to be perpendicular to a tangent line of a circle connecting ends of the plurality of rotation preventing protrusions.