uxcell 6.8mm M42 High Speed Steel Jobber Drill Bits, TiCN Coated Round Shank Twist Drill Bit for Stainless Steel, Alloy and Hard Steel - a22032300ux1148

uxcell a22032300ux1148

Cutting Hardness: HRC67-70, Drill Bit Diameter: 6.8mm / 0.27-inch, Flute Length: 70mm / 2.76-inch, Shank Diameter: 6.8mm / 0.27-inch, Total Length: 110mm / 4.33-inch. 1 x M42 High Speed Steel Twist Drill Bit M42 steel is high cobalt high-speed steel. M42 drill bits have the characteristics of high strength, high hardness, good wear resistance and good toughness. The TiCN coating structure enables the drill to have good thermal stability, high hardness, and good wear resistance. Coated tools have a long service life. It is recommended to use the drill bit at a speed of 100-800rpm. The larger the diameter, the slower the speed is required. Drill the hole diameter of 7mm or more. It is recommended to use a small drill bit to drill first, and then use a suitable size drill to drill the hole. Suitable for drilling of stainless steel, die steel, titanium alloy, cast steel, iron, aluminum alloy and copper.

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