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Cobalt silver and deming drill bit with reduced shank 49/64in bronze oxide finish

Drill America

Drill America 49/64in Reduced Shank Cobalt Silver and Deming Drill Bit

SKU CH-5CAB-GTN3E

A 49/64 inch cobalt steel drill bit with a 1/2 inch reduced shank for drilling tough metals

  • Product typeDrill Accessories
  • Cobalt steel resists heat and wear
  • Reduced 1/2in shank fits standard chucks
  • Silver and Deming design handles large holes
  • Bronze oxide finish adds corrosion protection

49/64-inch Cobalt Drill Bit with Reduced Shank

This cobalt steel drill bit features a 49/64-inch cutting diameter and a decimal equivalent of .7656. The reduced shank design allows the bit to fit securely in a standard 1/2-inch drill chuck. Bronze oxide surface treatment on the flutes helps resist wear and corrosion during demanding drilling tasks.

Suited for heavy-duty metalwork and maintenance

The cobalt construction provides the hardness needed for drilling tough alloys such as stainless steel. Builders needing a larger shank diameter or a different flute length will need a separate bit, as this model is fixed at its listed overall length and reduced shank specification.

How it compares

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

Price $28.99
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 deep can the 49/64 inch cobalt bit drill before the 3 inch flute length fills with chips?

The flute length is 3 inches, so chip clearance is effective to roughly that depth; beyond it you should withdraw the bit to clear chips.

Does the bronze oxide coating on the cobalt steel reduce heat build-up during prolonged drilling?

The bronze oxide surface treatment on the cobalt steel helps dissipate heat and reduces friction during extended use.

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