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Silver cobalt drill bit with reduced shank and bronze oxide finish

Drill America

Drill America 9/16in Reduced Shank Cobalt Silver and Deming Drill Bit pneumatic accessory

SKU CH-ZYY1-AQR31

9/16 inch cobalt drill bit with 1/2 inch reduced shank for drilling in tough metals

  • Product typeDrill Accessories
  • 9/16 inch drilling capacity for larger holes
  • 1/2 inch reduced shank fits standard chucks
  • Cobalt steel construction resists heat and wear
  • Bronze oxide finish adds corrosion protection

9/16" Reduced Shank Cobalt Drill Bit

This Drill America bit is a Silver and Deming style accessory built for heavy-duty drilling in metal. Its cobalt steel construction handles high heat and abrasion when working with stainless steel, cast iron or tough alloys. The reduced 1/2" shank allows the 9/16" cutter to fit standard drill chucks and pneumatic drivers. It is suited for professional mechanics and fabricators who need a single large-diameter bit for thick plate work.

Bronze Oxide Flutes and 6" Overall Length

The bronze oxide surface treatment on the flutes reduces friction and resists corrosion during extended use. A 3" flute length provides adequate chip clearance for deep holes while the 6" overall length offers reach into recessed areas. The straight-shank design suits keyed or keyless chucks without a taper requirement. Buyers who need a full Silver and Deming set or a bit with a tang drive will not find those features here.

How it compares

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

Price $21.99
Cheaper than about 60% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameDrill America
Product typeDrill Accessories

Questions about this item

What does the 1/2 in reduced shank cap the maximum drill-chuck size at?

The reduced shank measures 1/2 in, so it fits any chuck that accepts at least that capacity.

What overall length and flute length must the drill press or hand drill accommodate?

Overall length is 6 in with a 3 in flute, so the spindle travel and workpiece clearance must allow at least that depth.

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