Hertel C.E03.0470 Aircraft Extension Drill Bit 13 Hss

Product Description

The HERTEL C.E03.0470 is a wire-gauge aircraft extension drill bit designed for precision drilling in aerospace, sheet metal, and deep-reach applications. Built from high-speed steel with an oxide finish, it features a 135-degree split point that is self-centering and reduces walking on contact. The two-flute spiral design with a web-thinned, tapered web configuration promotes efficient chip evacuation. At 6 inches overall length with a 2.3125-inch flute length, this bit provides the extended reach required for drilling in confined or recessed areas. It meets NAS 907 standards and is suited for general-purpose metal drilling performed by machinists, aircraft mechanics, and sheet metal fabricators.

This drill bit is sized to wire gauge number 13, corresponding to 0.1850 inches decimal diameter. The straight cylindrical shank matches the same 0.1850-inch diameter, making it compatible with standard drill chucks and quick-change holders. It is commonly used in aircraft structural assembly, HVAC ductwork fabrication, plumbing rough-in, and any application requiring a clean, accurately located hole in metal at an extended depth. Right-hand cutting direction is standard for conventional drill press and hand-drill use.

Key Features

• Wire gauge size 13 (0.1850 inches) straight cylindrical shank for standard chuck compatibility
• 135-degree split point with self-centering geometry reduces drill walking and pilot marks
• Web-thinned, tapered web configuration lowers thrust force and improves chip flow
• High-speed steel construction with oxide finish for corrosion resistance and lubricity
• 6-inch overall length provides extended reach into recessed or confined work areas
• Meets NAS 907 standard for aircraft-quality drill bits

Compatibility

Designed as an OEM-style general-purpose aircraft extension drill bit compatible with standard 3-jaw drill chucks and quick-change holders accepting a 0.1850-inch straight cylindrical shank.

Installation Notes

Installation and use should be performed by qualified machinists, aircraft mechanics, or sheet metal tradespeople familiar with proper drilling technique for high-speed steel tooling. Secure the workpiece firmly before drilling and use appropriate cutting fluid for steel substrates to extend tool life. Inspect the split point for chipping or wear before each use and replace the bit if the cutting edges are damaged. Follow applicable workplace safety standards and wear eye protection during all drilling operations.