ITEM NAME:6*Steel Hex Shank HSS Metric Screw Thread Tap Taper Drill Bit M3 M4 M5 M6 Tdf Descriptio n Discription.Drill tap bits increase efficiency of operation by allowing for drilling and tapping to be accomplished in a single pass. These HSS drill and tap bits are great tools used to create screw threads, to cut or form the female portion of the mating pair.
