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Chicago-Latrobe 42779 jobber drill bit .2720 split point TiAlN coated high-speed steel

Chicago-Latrobe

Chicago-Latrobe 42779 135 Degree Jobber Drill Bit .2720

SKU CH-FM6K-DT3HP

A 135-degree split-point jobber drill bit in high-speed steel with TiAlN coating, sized at .2720 inch for precise metal drilling

  • Product typeDrill Bits
  • Main materialHAWA
  • 135-degree split point starts cleanly on hard metals
  • High-speed steel with TiAlN coating resists wear at high speeds
  • Jobber length handles general-purpose drilling tasks
  • Decimal size .2720 matches letter I for precise fits
  • Heavy-duty construction withstands demanding workshop use

Chicago-Latrobe 42779 135° Drill Bit

The Chicago-Latrobe 42779 is a jobber length drill bit sized to decimal .2720 with a 135 degree split point. It is made from high speed steel with a TiAlN coating for extended life in general purpose drilling. This accessory suits maintenance, fabrication and automotive workshops needing a durable cutting tool.

Ideal for split-point drilling tasks.

The 135 degree split point centres quickly without a pilot hole, suiting machinists and technicians drilling steel and alloys. Buyers who need through-coolant delivery or coolant holes for deep-hole chip evacuation should look at alternative designs, as this bit has zero coolant holes.

Decimal size .2720 determines fit

The critical specification is the drill bit size .2720, which must match the required hole diameter or tap drill chart exactly. Verify this decimal equivalent against your drawing or fastener specification before ordering to ensure the correct fit.

How it compares

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

Price $8.99
Cheaper than about 90% 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

What shank size does the 42779 drill bit need to fit my drill chuck?

The jobber-length bit has a straight shank matching its .2720 inch diameter, so it fits any standard three-jaw chuck that accepts that size.

How do I start the 135 degree split point without the bit walking?

Apply light pressure and let the self-centering split point bite; the 135 degree angle reduces thrust so the bit won't skate on hard steel.

When should I replace the TiAlN-coated HAWA bit?

Replace it when the gold coating wears through to bare steel or when the split point no longer self-centers cleanly.

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