Attachment devices

Attachment devices are taught that preferably include a main body, a first engagement means provided on the main body, and a second engagement means provided on the main body. The attachment device is attached to a panel lining sheet by engaging the first engagement means with a receiving hole, to thereby produce a panel lining sheet assembly. After the panel lining sheet assembly is overlaid on a vehicle panel, the attachment device is attached to the vehicle panel by engaging the second engagement means with a mounting hole of the vehicle panel. Thus, the attachment device can be secured to the vehicle panel with the panel lining sheet interleaved between the attachment device and the vehicle panel.