Precision Twist Drill 6001334 Aircraft Extension Drill

Product Description

The PRECISION TWIST DRILL 6001334 is a high speed steel aircraft extension drill bit built for deep-hole drilling applications where standard-length bits cannot reach. Sized to wire gauge 6 (0.204 inches decimal), this bit features a 135-degree split point for self-centering entry without a center punch, reducing walking on curved or hard surfaces. The spiral flute geometry and web-thinned, tapered web construction promote efficient chip evacuation during extended drilling. An oxide finish provides mild lubricity and corrosion resistance. The 6-inch overall length with a 2.5-inch flute length makes it a go-to tool for aerospace, structural, and mechanical fabrication work requiring reach into tight or recessed bores. Right-hand cutting direction. Sold individually.

This drill bit is suited for use on metal substrates including aluminum, mild steel, and similar materials in aircraft, sheet metal, and general fabrication environments. The straight-cylindrical shank seats securely in standard drill chucks and drill motors used by mechanics, aircraft technicians, and metalworking tradespeople. The Series 501-6 designation places it within a standardized product family recognized across industrial supply channels. It meets NAS 907 Type B standards, making it appropriate for aerospace-adjacent applications where dimensional and performance compliance is required.

Key Features

• 135-degree split point with self-centering geometry — no center punch required
• Web-thinned tapered web for reduced thrust and improved chip flow
• 6-inch overall length provides extension reach for deep or obstructed bore locations
• High speed steel construction handles general-purpose metal drilling across a range of workpiece materials
• Oxide finish for mild corrosion resistance and reduced friction
• Meets NAS 907 Type B standard

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for applications requiring a wire gauge 6, 0.204-inch diameter, straight-shank aircraft extension drill conforming to NAS 907 Type B. Compatible with standard 3-jaw drill chucks accepting a 0.204-inch straight-cylindrical shank.

Installation Notes

Installation and use should be performed by qualified machinists, aircraft mechanics, or metalworking tradespeople familiar with proper drilling technique for high speed steel tooling. Secure the straight shank fully in the drill chuck before operation and verify chuck tightness to prevent bit slippage. Use cutting fluid appropriate for the workpiece material to extend bit life and manage heat buildup. Do not exceed the recommended feed rate or RPM for the workpiece material and bit diameter.