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Cobalt jobber drill bit, 3/16 inch, 135-degree split point, TiAlN finish

Chicago-Latrobe

Chicago-Latrobe 44912 135 Degree Cobalt Jobber Drill 3/16 in

SKU CH-H6FV-HQ8SQ

135-degree split-point cobalt jobber drill bit cuts 3/16 inch holes with TiAlN coating for heat resistance

  • Product typeDrill Bits
  • Main materialHAWA
  • Cobalt construction resists heat and wear
  • 135-degree split point starts holes without wandering
  • TiAlN coating extends cutting life
  • 3/16 inch diameter matches common fastener sizes
  • Jobber length provides standard reach for general drilling

Chicago-Latrobe 44912 Cobalt Drill Bit

The Chicago-Latrobe 44912 is a 3/16 inch jobber length drill bit made from cobalt with a TiAlN coating. Its 135 degree split point design allows for accurate starting without a centre punch. The fractional inch size has a decimal equivalent of .1875 and features no coolant holes. This accessory suits metalworking tasks in automotive or general workshop environments.

Fits Standard Chucks for Metal Drilling

The bit installs directly into any drill chuck that accepts a 3/16 inch shank, requiring no special adapters or coolant systems. Its non-coolant-through construction simplifies the setup for hand-held or press operation. The TiAlN surface treatment reduces friction and heat buildup during extended use. This frees the operator from frequent bit changes when drilling tough alloys.

Ideal for Hard Metal Applications

Builders working with stainless steel, titanium or high-strength alloys will benefit from the cobalt substrate and split point geometry. Shops that primarily drill wood, plastics or soft aluminium may find a standard high-speed steel bit more economical. Users needing through-tool coolant delivery or larger diameter capacity should evaluate alternative designs. The 135 degree angle is optimised for rigid setups rather than flexible hand drilling.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $5.99
Cheaper than about 93% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE
Product typeDrill Bits
Size & build
Main materialHAWA

Questions about this item

How long does the 135-degree split point stay sharp when drilling stainless steel all day?

The cobalt HAWA body with TiAlN coating resists heat and wear far longer than standard HSS, keeping the 135-degree split point sharp through extended stainless runs.

Does the TiAlN coating cut heat enough to run the bit continuously without coolant?

Yes, the TiAlN layer reduces friction and dissipates heat so the bit runs cooler even in non-coolant-through applications.

Will the 3/16 inch shank fit my 1/2 inch drill chuck without an adapter?

The 3/16 inch diameter shank fits any standard three-jaw chuck that accepts up to 1/2 inch, so no adapter is needed.

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