Washer-equipped screw
A washer-equipped screw is provided with a screw body, a flat washer, and a rubber washer. The screw body includes a cylindrical portion between a shaft portion on which a screw groove is formed and a head portion. A hole in the flat washer is inserted through the cylindrical portion so as to be adjacent to the head portion. A hole in the rubber washer is inserted through the cylindrical portion and positioned on a shaft portion side of the flat washer. The cylindrical portion is provided with a projection for engagingly locking the flat washer. An inner edge of the flat washer is caught by the projection, whereby the flat washer is prevented from detaching.
1. A washer-equipped screw comprising:
a screw body having a cylindrical portion disposed between a shaft portion on which a screw thread is formed and a head portion;
a flat washer having a flat washer hole that has the cylindrical portion inserted therein, the flat washer disposed so as to be adjacent to the head portion; and
a rubber washer having a rubber washer hole that has the cylindrical portion inserted therein, the rubber washer positioned on a shaft portion side of the flat washer, wherein:
a projection for directly engagingly locking the flat washer is disposed on the cylindrical portion, and between the flat washer and the rubber washer, and
a groove into which the rubber washer is fitted is disposed on the cylindrical portion.