Step Drill Bit HSS M2 4-39mm

Description

Step 4-39mm drill bit from the professional tool brand Tvardy, made of the highest quality HSS M2 high-speed steel with TiAlN coating. The drill is stepped every 3 mm, features a cylindrical shank and legible numbering. It is intended for metals, thin-walled steel sheets, and plastics. M2 steel is a high-quality tungsten-molybdenum tool steel, used for the production of the highest quality cutting tools. This steel has excellent cutting properties. High molybdenum content significantly improves hardenability, also increases impact strength and corrosion resistance. Tungsten, on the other hand, increases the abrasion resistance of steel, meaning drills do not dull as quickly as those made of cheaper high-speed steels. Drill bits coated with a TiAlN layer are particularly intended for machining difficult-to-cut materials and wherever the drill will be subjected to high thermal loads due to the lack of coolant or limited coolant supply. This coating significantly improves the wear resistance of the drill bits and allows for increased cutting speed. The drill is packed in a blister with a hole for hanging on a hook. Technical data: Type: Step drill, Steel: HSS M2, Coating: TiAlN, Shank: cylindrical, Diameters [mm]: 4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, Stepped: every 3 mm, Total length [mm]: 107, Working length [mm]: 78.