opposite side of the carrier panel and assembled to the captive nut by mating the extension 120 on the captive nut to the cutout 230 on the captive washer the threaded fastener is then driven into the aesthetic panel to fasten the carrier panel to the aesthetic panel to form a wall panel it is found useful to prevent the captive nut and captive washer from spinning while the threaded fastener is driven into the aesthetic panel by holding the main body 105 with a wrench it is found that an aesthetic panel of solid surface material will give a pleasing appearance and good weathering characteristics corian u00ae solid surface from dupont of wilmington del is an example of an acceptable solid surface material numerous wall panels formed from aesthetic panels fastened to carrier panels are assembled to the exterior structure of a building to create walls an aesthetic panel made of corian u00ae solid surface material was placed on a workbench surface with the finished side face down on the work surface the corian u00ae panel had previously had undercut holes for keil anchors machined into the back face consequently these undercut holes were exposed on the backside of the corian u00ae panel keil anchors were inserted in each of the undercut holes captive washers were positioned on each keil anchor with the cutout in the captive washers capturing the extension of the keil anchor the captive washers were positioned so the resilient washer adhered to one face of the captive washers was between the captive washers and the backside of the corian u00ae panel the resilient washer was made of foam a mating dri design aluminum carrier panel was then placed on top of the captive washers with the holes and slots in the carrier panel aligned with.