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Silver cylindrical cobalt jobber drill bit 11.2 mm 135 degree split point

Chicago-Latrobe

Chicago-Latrobe 46493 11.2 mm 135° Cobalt Jobber Drill Bit

SKU CH-FKZT-624R6

An 11.2 mm cobalt jobber drill bit with a 135° split point for heavy-duty metal drilling

  • TypeDrill Bits
  • MaterialHAWA
  • 2 mm diameter drills precise metric holes
  • 135° split point starts on contact without wandering
  • 8 % cobalt steel resists heat in tough alloys
  • Jobber length reaches deep workpieces easily
  • Straw oxide finish reduces friction and chip welding

11.2 mm Cobalt Jobber Drill Bit

The Chicago-Latrobe 46493 is an 11.2 mm cobalt jobber drill bit built for heavy-duty metal drilling. Its 135-degree split point reduces walking and starts holes cleanly in tough alloys. The 8-percent cobalt construction resists heat and wear during extended use. Decimal equivalent is .4409 for precise specification matching.

Suited for tough alloy drilling, not wood or plastic

This bit targets machinists and maintenance crews drilling stainless steel, titanium or high-strength steel where standard HSS wears quickly. The split point geometry helps in handheld or CNC applications that demand accurate starts. It is not designed for wood, plastics or soft non-ferrous metals where a sharper point angle cuts faster. Builders needing coolant-through capability or larger diameter ranges should look at other tooling.

Straw finish signals heat treatment.

The straw-coloured surface identifies the cobalt heat-treatment batch; it is not a coating that adds lubricity. No coolant holes exist, so external flood or mist cooling must be supplied by the machine. The package contains only the drill bit itself — no case, index or lubricant. Users must provide their own tool holders and cutting fluid.

Highlights

  • 2 mm diameter drills precise metric holes
  • 135° split point starts on contact without wandering
  • 8 % cobalt steel resists heat in tough alloys
  • Jobber length reaches deep workpieces easily
  • Straw oxide finish reduces friction and chip welding

Specifications

BrandCHICAGO-LATROBE
TypeDrill Bits
MaterialHAWA

Questions about this item

What drill chuck capacity do I need for the 11.2 mm shank?

A chuck that opens to at least 11.2 mm (0.4409 in) is required; the bit is a straight-shank jobber length with no reduced shank.

Will the 135-degree split point work in my older drill press without coolant?

Yes, the split point is self-centring and the bit is non-coolant-through with zero coolant holes, so it runs dry in any standard drill press.

How can I confirm the 135-degree split point is cutting correctly after setup?

The bit should start on contact without a centre punch, produce short curled chips in steel, and the straw-coloured cobalt surface should show even wear on both cutting lips.

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