Drilling and tapping achieve two objectives in one operation. As you drill a hole in a piece of metal, you also tap threads. Drill-Tap Combo Drill Bits feature a helical flute design with a sharp pointed edge for self-centering. Also, the drill section has a helical point spanning 118 degrees, for small holes. For more extensive drilling, the drill bit has a split point.You can use these combo drill bits on iron, steel, brass, and aluminum. Besides, drill/tap combo drill bits
are designed to fit on multi-spindle threads. The drill sizes are available for ¾ inch, 1/16-inch, and up to 1-inch bore size. Both drilling and tapping coming from one shank, there is always a perfect alignment. Moreover, the drill size produces standard threading i.e., UNF (Unified National Fine) and UNC (Unified National Coarse) compatible with fasteners
from any manufacturer. Before the commencement of drilling, you must apply tapping fluid on the tap.