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Drill America cobalt silver and deming drill bit with reduced shank bronze finish

Drill America

Drill America 1-7/16in 1/2in Reduced Shank Cobalt Silver and Deming Drill Bit pneumatic accessory

SKU CH-NGBY-YJK1R

1-7/16 inch cobalt steel drill bit with a 1/2 inch reduced shank for heavy-duty drilling

  • Product typeDrill Accessories
  • 1-7/16 inch diameter bores large holes
  • Cobalt steel resists heat and wear
  • Bronze oxide finish reduces friction
  • 1/2 inch reduced shank fits standard chucks

Drill America 1-7/16in Cobalt Drill Bit

This Drill America cobalt steel bit handles 1-7/16in holes with a reduced 1/2in shank that fits standard chucks. Bronze oxide coating and surface-treated flutes resist heat and improve chip evacuation in tough alloys. The 6in overall length and 3in flute reach deep work without a special holder.

Best for large holes in hard steel and iron

Machinists and maintenance technicians drilling 1.4375in diameter holes in stainless or high-carbon steel will value the cobalt edge life. Builders needing smaller diameters, faster change systems, or non-metal materials should look at other tooling.

How it compares

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

Price $141.99
Pricier than about 90% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameDrill America
Product typeDrill Accessories

Questions about this item

What chuck size do I need to hold the 1/2 in reduced shank?

A 1/2 in chuck or larger will grip the reduced shank securely.

Will the 1.4375 in cutting diameter fit through a standard 1/2 in drill press spindle?

The spindle only needs to accept the 1/2 in shank; the larger cutting diameter clears the workpiece without contacting the spindle.

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