Nachi Surface Treated H.S.S. Jobbers Length Twist Drill, Size O, .3160″ Decimal Size, 4-1/2″ Overall Length

• H.S.S. – High Speed Steel
• Hardness: 58 to 60 RC
• Series: 501
• Finish Coating: Black Oxide
• Drill Point Angle: 118
• Drill Grade: General Purpose
• Ground from the solid.
• Cutting Direction: Right Hand
• Flute Shape: Standard Spiral, Helical Flute
• Shank Style: Straight Shank
• Workpiece Material Range: Steel, Cast Iron

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