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Cleveland Golf #19 cobalt jobber drill, parabolic flute, straw bronze finish

Cleveland Golf

Cleveland Golf Jobber Drill #19 135° Parabolic Cobalt

SKU CH-5JZ1-68SWK

Cobalt jobber drill bit sized #19 with a 135-degree parabolic flute for hard metals

  • TypeMasonry Tools
  • Parabolic flute clears chips faster in deep holes
  • 135-degree split point starts on contact without walking
  • Cobalt steel withstands heat when drilling hardened alloys
  • #19 wire-gauge diameter matches precise tapping charts
  • Straw bronze finish reduces friction and resists corrosion

Precision Cobalt Drill Bit

The Cleveland Golf Jobber Drill #19 uses cobalt steel with a 135° notch point for drilling hard alloys. Its parabolic flute clears chips efficiently in deep holes. The straw bronze finish resists wear during repetitive use. List number 2075 identifies this specific high-performance tool.

Suited For Hard Metal Drilling

Machinists working with chilled cast iron, stainless steel or high-strength alloys will benefit from the cobalt construction. The right-hand cutting direction matches standard drill presses and hand drills. Buyers needing coolant-through capability or a different point angle should look elsewhere. This bit is not designed for wood, plastic or soft aluminium.

135° Notch Point Geometry

The 135-degree notch point centres quickly without a pilot hole and reduces thrust in tough materials. Combined with the parabolic flute, it delivers the cutting action required for tool steels and similar grades. This point style is the single specification that determines suitability for the listed alloys.

Highlights

  • Parabolic flute clears chips faster in deep holes
  • 135-degree split point starts on contact without walking
  • Cobalt steel withstands heat when drilling hardened alloys
  • #19 wire-gauge diameter matches precise tapping charts
  • Straw bronze finish reduces friction and resists corrosion

Specifications

BrandCleveland
TypeMasonry Tools

Questions about this item

How long does the #19 cobalt bit stay sharp when drilling stainless steel all day?

The 135° notch point and parabolic flute clear chips quickly, so the cobalt edge resists dulling through extended runs in stainless and high-strength alloys.

Does the bit run hot or loud during continuous drilling?

Cobalt steel handles heat better than standard HSS, and the straw/bronze finish reduces friction, keeping temperature and noise lower in sustained use.

What chuck size do I need for the .1660 shank?

A standard 3/8 in. or 1/2 in. drill chuck that closes down to .1660 in. will hold the bit securely.

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