Hertel C.E03.0843 Aircraft Drill Bit Letter Q Hss

Product Description

The HERTEL C.E03.0843 is an aircraft extension drill bit designed for reaching into deep, recessed, or hard-to-access areas where standard-length bits cannot reach. Built from high-speed steel with an oxide finish, it features a 135-degree split point that is self-centering and reduces walking on entry, eliminating the need for a center punch in most applications. The two-flute spiral configuration with a web-thinned, tapered web provides efficient chip evacuation and reduced cutting resistance. At 6 inches overall length with a 3.4375-inch flute length, this bit is sized for extended-reach drilling in structural and fabrication work. It cuts right-hand and carries a straight cylindrical shank measuring 0.3320 inches in diameter.

This bit is intended for general-purpose drilling applications in aerospace, aviation maintenance, and metal fabrication environments where extended reach is required. The Letter Q size (0.3320 inches decimal) is commonly used for tapping, reaming prep, and close-tolerance hole production in aluminum, mild steel, and similar materials. It meets NAS 907 standards, making it appropriate for aviation and aerospace structural work. Licensed technicians, A and P mechanics, and skilled fabricators are the typical end users for this tool.

Key Features

• Letter Q size, 0.3320 inches decimal equivalent for consistent hole sizing
• 135-degree split point is self-centering and reduces drill walk on entry
• Web-thinned tapered web reduces cutting thrust and extends tool life
• High-speed steel construction with oxide finish for corrosion resistance
• 6-inch overall length provides extended reach into deep or recessed work areas
• Meets NAS 907 standard for aerospace and aviation applications

Compatibility

Designed as a general-purpose aircraft extension drill bit suitable for use in standard straight-shank drill chucks accepting a 0.3320-inch shank diameter in handheld, right-angle, and drill press setups.

Installation Notes

Installation of this bit requires a compatible drill chuck sized for a straight cylindrical shank. Secure the shank fully in the chuck before operation and verify chuck key is removed prior to powering the drill. When drilling in aviation or structural applications, follow applicable maintenance manual procedures and NAS or OEM specifications for hole size and finish requirements. Use appropriate cutting fluid for steel substrates to extend bit life and maintain hole quality.