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Silver cobalt drill bit with reduced shank 29/32in

Drill America

Drill America 29/32in 1/2in Reduced Shank Cobalt Silver and Deming Drill Bit pneumatic accessory

SKU CH-6GNP-SFC5J

A 29/32 inch cobalt drill bit with a reduced 1/2 inch shank for use in larger drill chucks

  • Product typeDrill Accessories
  • 29/32 inch size drills large holes accurately
  • Cobalt steel construction resists heat during heavy use
  • Reduced 1/2 inch shank fits standard chucks securely
  • Bronze oxide finish protects against corrosion and wear

29/32" Cobalt Drill Bit for Heavy Metalwork

This 29/32 inch cobalt steel drill bit is built for drilling tough alloys and stainless steel. The bronze oxide surface treatment on the flutes reduces friction and resists heat buildup. Its reduced 1/2 inch shank allows use in standard drill chucks while maintaining a large cutting diameter. The overall length is 6 inches with a 3 inch flute length.

Reduced Shank Fits Standard Chucks

The 1/2 inch reduced shank lets this large-diameter bit run in common 1/2 inch capacity drill chucks without needing a specialised holder. This frees up the need for a larger drill press or Morse taper adapter in many workshop tasks. The cobalt construction withstands higher drilling temperatures than standard high-speed steel. It is not suited for wood, plastics or soft non-ferrous metals where standard bits perform better.

How it compares

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

Price $42.99
Pricier than about 63% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameDrill America
Product typeDrill Accessories

Questions about this item

Will the 1/2 inch reduced shank limit the drill press capacity when using the full 29/32 inch diameter?

The 1/2 inch reduced shank fits standard 1/2 inch chucks while the cutting diameter remains 29/32 inch, so the chuck capacity sets the practical limit.

How much heat builds up in the cobalt steel during continuous drilling?

Cobalt steel resists heat better than high-speed steel and the bronze oxide finish helps dissipate it, but sustained high-speed work will still generate noticeable warmth.

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