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Cobalt jobber drill bit, 35/64 inch, straw bronze finish, 135 degree split point

Chicago-Latrobe

Chicago-Latrobe 50077 135° Heavy-Duty Cobalt Jobber Length Drill 35/64 in

SKU CH-3AEA-X79B3

Cobalt jobber-length drill bit with a 135° split point for 35/64 in holes

  • Product typeDrill Bits
  • Main materialHAWA
  • 135° split point starts on contact for accurate holes
  • Cobalt steel resists heat and wear in tough alloys
  • 35/64 in diameter covers large fractional drilling needs
  • Jobber length gives standard reach for general use
  • Straw bronze finish shows proper heat treatment

Chicago-Latrobe 50077 Cobalt Jobber Drill

This Chicago-Latrobe 50077 drill bit is made from cobalt steel for heavy-duty drilling tasks. It suits professionals and serious DIY users who need a durable fractional-inch bit. The 135-degree split point helps reduce walking on hard materials. It is designed for general-purpose jobber-length applications.

Check chuck capacity and material suitability

Verify that your drill chuck can accommodate a 35/64 inch shank before ordering. Confirm the workpiece material is compatible with cobalt steel and a 135-degree point angle. This bit has no coolant holes and is not coolant-through. Ensure your setup does not require through-coolant delivery for the intended job.

Fits standard drill chucks for heavy-duty work

The jobber length fits standard drill chucks without special adapters. Cobalt construction resists heat and wear during extended use in tough alloys. The split point design frees you from centre-punching in many materials. It delivers a 0.5469 inch hole diameter for precise fractional sizing.

How it compares

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

Price $42.99
Pricier than about 63% 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

Does the 50077 drill bit come as a single piece or in a set, and do I need a separate chuck?

The 50077 is a single jobber length drill bit with a 35/64 inch diameter. It fits standard drill chucks that accept this shank size; no extra chuck is required.

How do I know the 35/64 inch size is the right choice for my application?

Choose the 35/64 inch bit when your plans call for a .5469 decimal equivalent hole. The 135 degree split point helps start accurately in harder materials such as cobalt alloys.

What does the 135 degree split point actually do when the bit is in a real drill?

The 135 degree split point reduces walking and lowers thrust needed, letting the cobalt bit cut cleanly in tough steel without a centre punch.

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