Nachi 2 Flute Surface Treated H.S.S 118 Jobbers Length Twist Drill, 21/64″ Size, .3281″ Decimal Diameter, 4-5/8″ Overall Length

• H.S.S. – High Speed Steel
• Hardness: 58 to 60 RC
• Finish Coating: Black Oxide
• Surface treatment increases abrasion resistance, reducing the amount of chip welding improving chip flow
• Series: 501
• Drill Point Angle: 118
• Flute Shape: Standard Spiral, Helical Flute
• Suitable for general purpose and heavy duty drilling operations.
• Cylindrically ground from the solid.
• For drilling applications of a wide array of ferrous materials including: steel, cast steel, cast iron and other alloyed or non-alloyed ferrous metals

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