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Cobalt jobber drill bit 9/32 inch 135 degree split point straw bronze finish

Chicago-Latrobe

Chicago-Latrobe 47718 135 Degree Cobalt Jobber Drill Bit 9/32 in

SKU CH-9G7Q-S2MHM

Cobalt jobber drill bit with a 135-degree split point for hard metals, 9/32 inch size

  • Product typeDrill Bits
  • Main materialHAWA
  • 135-degree split point starts on contact without wandering
  • Cobalt construction resists heat during extended drilling
  • 9/32 inch fractional size fits standard chucks
  • Jobber length provides reach for deep holes
  • Straw bronze finish indicates proper heat treatment

Chicago-Latrobe 47718 Cobalt Jobber Bit

This Chicago-Latrobe 47718 drill bit uses cobalt construction for drilling hard metals such as stainless steel. The 135-degree split point reduces walking and starts the cut quickly without a centre punch. Jobber length provides standard reach for general workshop tasks. The fractional 9/32 inch size equals .2813 decimal equivalent.

Suited for metalworkers needing heat resistance

Machinists and maintenance technicians who drill tough alloys will benefit from the cobalt material and split-point geometry. Woodworkers or plastic fabricators do not need this level of heat resistance and should choose high-speed steel or brad-point bits instead. Buyers who want more storage or a full index set should look at multi-piece kits rather than a single bit.

Check chuck capacity and spindle speed

Verify that your drill chuck accepts a 9/32 in shank before ordering. Confirm the tool can run at the lower RPMs cobalt requires for stainless steel to avoid premature wear. Ensure the workpiece is clamped securely so the split point engages cleanly without deflection.

How it compares

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

Price $3.99
Cheaper than about 96% 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 drill chuck size do I need for the 9/32 inch shank?

A standard 3/8 inch or larger three-jaw chuck will grip the 9/32 inch shank securely.

Will the 135 degree split point start cleanly in my older cast-iron workpieces?

Yes, the 135 degree split point reduces walking and cuts efficiently in hard materials like cast iron.

How can I confirm the cobalt bit is cutting correctly after the first hole?

Check for a smooth hole wall, consistent .2813 inch diameter, and straw-coloured chips rather than blue heat discoloration.

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