Nail for fastening together two workpiece sheets, using a nail gun, has a spiral opening at the point tip of the nail shaft to take in material from the upper sheet as it is driven through

摘要

The nail (106), to fasten together two workpieces (102,104), has a nail head (108) and shaft (110) and a pointed tip (112) with an opening (114) to take up material (116) from the upper workpiece as the nail is driven through. The opening has a spiral screw structure.