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Chicago-Latrobe 11028 aircraft extension drill 15/32 inch black oxide finish

Chicago-Latrobe

Chicago-Latrobe 11028 135 Degree NAS-Type Aircraft Extension Drill 15/32 in

SKU CH-KZZM-K8BG4

Aircraft extension drill bit with a 135-degree split point for high-performance machining

  • 135-degree split point reduces walking on hard materials
  • 15/32 inch high-speed steel bit handles demanding drilling tasks
  • Black oxide finish resists corrosion for longer tool life
  • 4-5/16 inch maximum depth reaches confined work areas
  • 28-degree helix angle improves chip evacuation during use

Drill Bit Size 15/32 Inch

This Chicago-Latrobe 11028 aircraft extension drill features a 15/32 inch fractional diameter and a 135 degree split point. It is manufactured from high speed steel with a black oxide finish for machining high performance. The tool is designed for deep hole drilling in aerospace and industrial applications.

Shank and Chuck Compatibility

Verify that your drill chuck or collet accepts a straight shank of this diameter before ordering. The extension length requires adequate spindle clearance and rigidity to prevent deflection during operation. Ensure the workpiece setup allows for the full 4 5/16 inch maximum drilling depth.

Sustained Drilling Performance

The high speed steel construction and black oxide coating maintain hardness and reduce friction during extended cutting cycles. The 135 degree split point geometry promotes self-centering and efficient chip evacuation at the specified 28 degree helix angle. This design supports consistent material removal at depth without frequent pecking.

How it compares

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

Price $21.99
Cheaper than about 80% of the 2,412 comparable items (median $81.99).

Specifications

Product
Brand nameCHICAGO-LATROBE

Questions about this item

What comes in the box with the 11028 drill bit and do I need to buy anything else to use it?

The box contains the single 11028 aircraft extension drill bit. No extra accessories are required; it fits directly into a standard drill chuck that accepts a 15/32 inch shank.

The listing shows a 135 degree split point and a 28 degree helix — which one should I pick for my job?

This model is only offered with a 135 degree split point and a 28 degree helix. Both features are fixed on the 11028, so there is no alternative version to choose between.

What does the 4 5/16 inch maximum drilling depth mean when I am using the bit in a real machine?

You can drill holes up to 4 5/16 inches deep in a single pass before you need to withdraw the bit to clear chips or apply more cutting fluid.

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