Description

The Tap-Drills Set 7-piece (20130410) combines the pilot drill and tapping operation for M3, M4, M5, M6, M8, and M10 metric threads in a set of precision combination drills designed to drill the correct tapping diameter and create a chamfer in a single operation. This set is invaluable for electricians and engineers who regularly cut threads in steel enclosure plates, mounting brackets, and electrical panel chassis.
Each combination drill is sized to the precise tapping drill diameter for the corresponding metric thread, ensuring correct thread engagement when tapped. The chamfering step at the leading end of each drill creates a clean, professional entry point for the thread. Made from high-speed steel for adequate hardness and wear resistance in mild steel, stainless steel, and aluminium.
The seven-piece format covers the most commonly required threads in electrical and mechanical assembly, making this set a practical, time-saving addition to any professional’s drilling and tapping toolkit. Eliminates the need for a separate set of tapping drill bits.