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Cobalt drill bit 19/64 inch straw bronze finish parabolic flute 135 degree point

Cleveland Golf

Cleveland Golf 19/64 Cobalt Parabolic Drill Bit 135° 2075

SKU CH-MJPK-KPDF2

Drills 19/64 inch holes in hard metals using cobalt steel with a 135° parabolic flute for efficient chip removal

  • TypeAngle, Pitch & Slope Locators
  • Precise 19/64 in. holes with 135° cobalt notch point
  • Parabolic flutes clear chips faster on deep cuts
  • Cobalt steel resists heat in hard metals
  • Jobber length 4-3/8 in. fits standard chucks
  • High-performance grade for repeatable accuracy

Cleveland Golf 19/64 Cobalt Drill Bit

The Cleveland Golf 19/64 cobalt parabolic drill bit is a high-performance cutting tool built for precision metal drilling. Its 135-degree notch point and straw-bronze finish suit professional machinists and serious DIY users who need reliable hole-making in tough alloys. The jobber-length design fits standard drill chucks for everyday workshop use.

Parabolic Flute Chip Removal Limits

The parabolic flute geometry improves chip evacuation in deeper holes compared to standard twist drills. However, the non-coolant-through design means heat builds up faster during sustained high-speed drilling in stainless steel or titanium. Operators must use peck cycles and external flood coolant to prevent work hardening and premature edge wear on the cobalt substrate.

Installation And Common Issues

The 19/64 inch shank seats directly into matching collets or three-jaw chucks without adapters. Runout increases if the chuck jaws are worn or the shank is not cleaned of protective oil before clamping. The 135-degree point can walk on curved surfaces, so a centre punch mark or spotting drill is recommended to ensure accurate hole placement.

Highlights

  • Precise 19/64 in. holes with 135° cobalt notch point
  • Parabolic flutes clear chips faster on deep cuts
  • Cobalt steel resists heat in hard metals
  • Jobber length 4-3/8 in. fits standard chucks
  • High-performance grade for repeatable accuracy

Specifications

BrandCleveland
TypeAngle, Pitch & Slope Locators

Questions about this item

Should I choose the 19/64 inch size or a different fractional drill bit?

Select the 19/64 inch size when you need a 0.2969 inch diameter hole; choose another fractional size for different hole diameters.

What does the 135 degree point angle do when the bit is in a drill press?

The 135 degree notch point reduces walking and starts cutting faster in hard materials like stainless steel.

How does the parabolic flute design affect chip removal during deep drilling?

Parabolic flutes pull chips out more efficiently than standard flutes, reducing heat buildup in holes up to 3-1/16 inch deep.

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