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Chicago-Latrobe 11024 13/32 inch black oxide aircraft extension drill bit with 135 degree split point

Chicago-Latrobe

Chicago-Latrobe 11024 13/32 in 135° Split-Point Aircraft Extension Drill

SKU CH-W537-YD2MT

Aircraft extension drill with 13/32 in split-point tip and 135° angle for precision deep-hole drilling

  • 13/32 in drill bit handles large-hole tasks
  • 135° split-point angle starts holes without wandering
  • High-speed steel with black oxide resists wear
  • 3 7/8 in flute length reaches deep work
  • 28° helix clears chips efficiently

Aircraft Extension Drill 13/32 in

The Chicago-Latrobe 11024 is a 13/32 inch aircraft extension drill designed for deep-hole drilling in aviation and precision metalwork. Its extended reach suits maintenance tasks where standard-length bits cannot access the workpiece.

Split Point 135° and Black Oxide

The 135-degree split point reduces walking and starts holes cleanly without a centre punch. Black oxide finish adds lubricity and corrosion resistance during high-speed steel cutting in tough alloys.

3 7/8 in Maximum Depth and 28° Helix

The 3 7/8 inch maximum drilling depth limits the tool to relatively shallow extended-reach holes. The 28-degree helix angle optimises chip evacuation in that range but may clog in deeper or softer materials.

How it compares

Measured against everything we stock in Power Drills, Drivers & Cutting Bits, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 85% of the 2,412 comparable items (median $81.99).

Specifications

Product
Brand nameCHICAGO-LATROBE

Questions about this item

When will the 13/32 in split-point tip need resharpening or replacement?

The 135-degree split-point geometry on high-speed steel with black oxide coating resists wear; resharpen when the point dulls or the bit walks on hard material.

What limits continuous drilling depth with the 11024 aircraft extension drill?

The flute length allows a maximum drilling depth of 3 7/8 in before chips must be cleared to avoid binding.

How much heat builds up in the high-speed steel body during all-day use?

Black oxide finish helps dissipate heat; use cutting fluid and the 28-degree helix angle to evacuate chips and control temperature during sustained drilling.

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