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Silver 12 inch high speed steel drill bit 1/16 inch diameter

Cleveland Golf

Cleveland Golf C13176 1/16x12 In HSS Extension Drill

SKU CH-AGP5-SCANJ MPN C13176

A 12-inch high-speed steel extension drill with a 1/16-inch split point for deep, precise holes

  • Product typeDrill Accessories
  • Main materialHigh speed steel
  • 12-inch reach drills deep cavities
  • 1/16-inch diameter creates precise pilot holes
  • 135-degree split point starts on contact
  • High-speed steel resists heat during extended use
  • Bright finish suits general-purpose machining

Extra-Long HSS Drill Bit

The Cleveland C13176 is a 1/16-inch high-speed steel extension drill designed for deep-hole drilling in aircraft maintenance and precision machining. Its 12-inch overall length reaches areas standard bits cannot, while the 135-degree split point reduces walking and ensures accurate starts in tough alloys. Machinists and technicians gain a specialised tool for high-performance fractional-inch work.

Heat Management in Deep Drilling

High-speed steel construction maintains hardness at the elevated temperatures generated during extended drilling cycles at 4xD depth. The bright, uncoated finish allows operators to apply cutting fluid directly for effective heat dissipation and chip evacuation. Consistent flute geometry supports stable cutting action, minimising vibration that can degrade hole quality or damage the workpiece.

Upgrade from Standard-Length Bits

This bit replaces shorter jobber drills when access exceeds their reach, such as drilling through wing spars, deep cavities or stacked components. The jump is justified when a 1/16-inch hole must be drilled to a 1/4-inch depth in confined spaces where standard lengths bottom out. It is not suited for production runs requiring coated-tool life or diameters outside the 1/16-inch fractional size.

How it compares

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

Price $11.99
Cheaper than about 84% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCleveland
Model nameC13176
Product typeDrill Accessories
Size & build
Main materialHigh speed steel

Questions about this item

How do I install the C13176 12-inch extension drill bit in my drill chuck, and what step do people often miss?

Insert the shank fully into the chuck jaws and tighten securely; the common mistake is not seating the bit deep enough, which causes wobble on the 12-inch length.

What maintenance or replacement will the C13176 high-speed steel bit need after extended use?

The bright uncoated HSS cutting edges will dull over time; resharpen the 135-degree split point to the original 21-to-34-degree relief angles or replace the bit when drilling performance drops.

What limit appears first when using the C13176 continuously in deep-hole drilling?

The 1/4-inch maximum drilling depth per pass (4xD for the 1/16-inch diameter) is reached quickly, requiring frequent peck cycles to clear chips and prevent overheating.

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