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Cobalt jobber drill bit 15/64 inch parabolic flute straw bronze finish

Cleveland Golf

Cleveland Golf 15/64 Parabolic Cobalt Drill Bit 135° 2075

SKU CH-7KTQ-BB8FX

Parabolic-flute cobalt drill bit with 135° notch point drills 15/64 in. holes in hard metals

  • TypeAngle, Pitch & Slope Locators
  • Cobalt steel resists heat for longer tool life
  • 135-degree notch point starts holes without wandering
  • Parabolic flutes clear chips faster in deep cuts
  • 15/64 inch diameter matches standard jobber drill sizing
  • High-performance grade handles tough metals like stainless steel

15/64 Cobalt Jobber Drill Bit

This 15/64 inch cobalt steel drill bit is built for drilling hard metals such as stainless steel and high-strength alloys. The 135 degree notch point reduces walking and starts holes cleanly without a centre punch. Its parabolic flute geometry improves chip evacuation in deep holes. The straw bronze finish identifies the high-performance cobalt grade.

Sustained drilling in tough alloys

Cobalt steel retains hardness at the elevated temperatures generated during prolonged cuts in difficult materials. The parabolic flute continuously lifts chips away from the cutting edges, preventing packing and heat buildup during extended drilling cycles. Right-hand cutting direction and a standard jobber length suit conventional drill presses and handheld machines. The 135 degree point angle maintains centring accuracy over repeated holes.

Upgrade from general-purpose high-speed steel

Machinists who experience rapid wear or broken tips when drilling stainless steel, titanium or heat-treated steels gain tool life by switching to this cobalt grade. The notch point and parabolic flute combination replaces standard twist bits that struggle with chip removal in deeper holes. Buyers needing coolant-through capability or a different shank style should select a bit designed for those requirements.

Highlights

  • Cobalt steel resists heat for longer tool life
  • 135-degree notch point starts holes without wandering
  • Parabolic flutes clear chips faster in deep cuts
  • 15/64 inch diameter matches standard jobber drill sizing
  • High-performance grade handles tough metals like stainless steel

Specifications

BrandCleveland
TypeAngle, Pitch & Slope Locators

Questions about this item

Does the 135-degree notch point on the 15/64 cobalt drill bit reduce heat buildup during extended drilling?

The 135-degree notch point and parabolic flute design on this 15/64 cobalt bit help eject chips efficiently, which lowers friction and heat during prolonged use in metal.

What shank size must my drill chuck accept to use this 15/64 cobalt bit?

The shank diameter matches the 15/64 inch drill size, so your chuck must accommodate at least a 15/64 inch shank.

Will this 15/64 cobalt bit fit the same jobber-length holder as my older high-speed steel bits?

Yes, the overall length of 3-7/8 inches and flute length of 2-5/8 inches follow standard jobber dimensions, so it fits existing jobber holders.

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