Precise Taper Length 135 Parabolic Flute H.S.S Deep Hole Drill, Size #31, Flute Length 2-3/4″, Overall Length 5-1/8″

• H.S.S. – High Speed Steel
• Hardness: 58 to 60 RC
• Finish Coating: TiN For less galling edge build-up increase speed up to 100% or feed up to 50%.
• Drill Point Angle: 135
• Series: A59-TiN
• Designed for general purpose, heavy duty drilling operations for tougher materials.
• The flute design offers open fluting, heavy parallel web and a higher helix angle.
• 135 point works very well for drilling alloy steels, cast iron, manganese steels, harder stainless steels and a variety of other tougher ferrous and non-ferrous metals and alloys.
• The split point reduces the required drilling thrust aids centering the drill.
• Used with manual drills, portable or stationary machines.
• For best results, use cutting fluids and lubricants.
• Right hand (clockwise rotation) cutting direction.
• Offers open fluting, heavy parallel web and a higher helix angle.
• Spiral – helical flutes.
• Straight shanks correspond to the drill diameter.
• Taper length drills have flutes proportional to length.
• Increased web for deeper holes or clearing drill bushings.
• Flute Shape: Parabolic
• Workpiece Material Range: Steel, Cast Iron, Plastics

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