A fuse of a semiconductor device includes first fuse metals formed over an underlying structure and a second fuse metal formed between the first fuse metals. Since the strain-generating member having a thickness less than the height of a strain-generating member holding space formed between the washers is placed in the space with some clearance, even when the washers are fixed to the bolt by a strong pressing force, the pressing force will not directly act on the strain-generating member. The post has spring-back capabilities, such that after the post is hit by an object such as a vehicle, the post springs back to a normal vertical position. In this manner, a repeated pattern defines a sub-element of a drawing function. To avoid an entrapment of brake fluid or a vacuum between the balls and the leaf springs, respectively, a central hole has been provided in the bowl-shaped body.