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$787.99
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SPECIFICATIONS
An externally threaded fastener with a machine screw thread pitch and an extended drill point which creates its own hole. The fastener also has two reaming wings located at opposite sides of the shank, below the threads and above the drill point. A tapping screw with an integrally formed Hex washer head, spaced or unified threads, and a drill point significantly longer than that of a #2 or #3 point drill screw. Designed to drill through a greater thickness of steel than a standard self drilling screw. Although it can assist is attaching metal deck to structural steel, the #4 and #5 point self drilling screws are not structural bolts and should not be used as such. The unified thread pitch reduces friction and driving torques. Drill screws with this style thread are normally used with thicker materials, particularly when the materials being joined are thicker than a single spaced thread pitch. The reaming wings drill out a clearance hole in wood or other soft materials, then snap off when in contact with the metal surface to be drilled. The #4 point typically will drill through sheet metal from .145 to .312 inches thick.