Precise Parabolic Flute H.S.S. Jobbers Length Deep Hole Drill, Size #31, 1-5/8″ Flute Length, 2-3/4″ Overall Length

• H.S.S. – High Speed Steel
• Hardness: 58 to 60 RC
• For general purpose and heavy duty drilling operations.
• 135 split point better for drilling alloy steels, cast iron, manganese steels, harder stainless steels and a variety of other tougher ferrous and non-ferrous metals and alloys.
• Split point reduces required drilling thrust and aids centering the drill.
• Flute design offers open fluting, heavy parallel web and a higher helix angle.
• 2 Flutes
• Spiral – helical flutes.
• Straight shanks correspond to drill diameter.
• Flutes are proportional to length.
• Cutting Direction: Right Hand
• Drill Grade: Heavy Duty
• Workpiece Material Range: Steel, Non-Ferrous, Cast Iron, Plastics

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