Wera 847 Hex Shank Tapping Drill Bit

The Wera 847 HSS Combined Tapping Drill Bit in 4.2mm is engineered to drill, tap and deburr in one efficient pass, producing an M5 thread. This versatile size is ideal for medium-duty metalworking tasks, including bracket fabrication, machine assembly and general workshop use. Made from high speed steel (HSS), the bit combines toughness with a finely-tuned material elasticity that resists premature wear. Excellent centring properties mean it engages cleanly without wandering, and the effective c