FASTENING COMPONENT FOR VEHICLES AND FASTENING STRUCTURE FOR VEHICLES

The invention provides a fastening component for vehicles, the position precision of a nut and a partition member is excellent, and thus no foreign substance can enter the space between the nut and the partition member. Provided is a fastening component for vehicles that includes a holding member, a nut, and a spacer. The holding member is made of a piece of plate material and bent to form first and second opposing portions that oppose each other. The nut includes a bolt insertion hole and is arranged on an outer surface of the first opposing portion. The spacer having a cylindrical shape is arranged on an outer surface of the second opposing portion. The holding member includes first and second through holes respectively penetrating the first and second opposing portions in respective thickness directions thereof. The first and second through holes are arranged to be continuous with the bolt insertion hole of the nut. The spacer is arranged to surround the bolt insertion hole when viewed along a central axis