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Long silver cobalt aircraft extension drill bit, 12 inches overall length

Drill America

Drill America 23/64in x 12in Cobalt Aircraft Extension Drill Bit pneumatic accessory

SKU CH-Z8AB-62AJE

A 23/64 inch cobalt aircraft extension drill bit with 12 inch overall length and heavy-duty split point for deep-hole drilling

  • Product typeDrill Accessories
  • Cobalt steel withstands high heat
  • Split point reduces walking on contact
  • 12-inch reach accesses deep cavities
  • 23/64-inch size matches precise specifications

Drill America 23/64in Cobalt Extension Bit

The Drill America 23/64in Cobalt Aircraft Extension Drill Bit is built for precision drilling in hard metals. Its cobalt steel construction resists heat and wear during extended use. The heavy-duty split point starts on contact without walking. This accessory suits maintenance and fabrication tasks requiring deep reach.

12in Overall Length with 3-1/2in Flute

The 12 inch overall length provides access through deep cavities and structural members. A 3-1/2 inch flute clears chips efficiently during deep-hole drilling. The straight shank fits standard chucks and collets for quick changes. Cobalt alloy retains hardness at elevated temperatures for consistent performance.

How it compares

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

Price $14.99
Cheaper than about 77% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameDrill America
Product typeDrill Accessories

Questions about this item

What drill shank size does the 23/64in cobalt bit need?

The bit has a 23/64in diameter shank so it fits any chuck that accepts that size.

How much clearance is required for the 12in overall length?

The drill bit measures 12in overall with a 3-1/2in flute so allow at least that much depth in the workpiece.

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