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Drill America 45/64 inch cobalt silver and Deming drill bit with reduced shank

Drill America

Drill America 45/64in 1/2in Reduced Shank Cobalt Silver and Deming Drill Bit pneumatic accessory

SKU CH-B6JB-DQS4G

45/64 inch cobalt silver and deming drill bit with 1/2 inch reduced shank for heavy-duty drilling

  • Product typeDrill Accessories
  • 45/64" cobalt steel bit resists heat during heavy drilling
  • Reduced 1/2" shank fits standard chucks on larger machines
  • Bronze oxide finish protects flutes from corrosion and wear
  • 3" flute length clears chips efficiently in deep holes

Drill Bit for Cobalt Steel Drilling

The Drill America cobalt bit handles heavy-duty drilling in tough metals. Its reduced shank fits standard 1/2-inch chucks while the 45/64-inch cutting diameter creates precise holes. Bronze oxide finish protects the cobalt steel from wear during extended use.

Heat Resistance and Cutting Efficiency

Cobalt steel construction dissipates heat effectively during continuous operation. The surface-treated flutes evacuate chips cleanly to reduce friction and cutting noise. Bronze oxide coating minimises galling so the bit runs cooler and draws less power through each pass.

How it compares

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

Price $29.99
Typical for this category: the median of 5,493 items is $27.99.

Specifications

Product
Brand nameDrill America
Product typeDrill Accessories

Questions about this item

How do I install the 45/64in cobalt drill bit with its 1/2in reduced shank into my drill press, and what step is often missed?

Insert the 1/2in reduced shank fully into the chuck, tighten all three jaws evenly, and verify the bit runs true before starting — the step often missed is not seating the shank completely, which causes wobble in the 45/64in cutting diameter.

What maintenance will the cobalt silver and deming drill bit need after repeated use on hard steel?

The bronze oxide coating on the surface treated flutes reduces friction, but the 45/64in cutting edges will eventually dull; resharpen with a cobalt-approved grinding wheel to restore the original geometry and maintain the .7031 decimal equivalent size.

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