5/16" x 12" HSS Aircraft Extension Drill Bit
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The 5/16" x 12" HSS Aircraft Extension Drill Bit is designed for deep-hole drilling and accessing hard-to-reach areas where standard drill bits cannot reach. Manufactured from high-speed steel (HSS), this drill bit offers durability, heat resistance, and reliable cutting performance across a variety of materials.
The extended 12-inch length makes it ideal for drilling through assemblies, sheet metal, tubing, and structural components. It is commonly used in aircraft maintenance, automotive repair, fabrication, and general shop work where extra reach is required.
Features & Benefits
- 5/16" diameter drill bit
- 12" aircraft extension length for deep drilling
- High-speed steel (HSS) construction
- Ideal for hard-to-reach drilling locations
- Suitable for steel, aluminum, plastic, and other materials
- Commonly used in automotive, aircraft, and fabrication work
This aircraft extension drill bit provides extended reach and dependable drilling performance for professional and industrial applications.
- Type Drill America
- Vendor Drill America
- SKU DR-D/AA/CX125/16
In-stock items usually ship within 2 business days but can take up to 7 business days. Shipping time starts once your order heads out the door.