Hertel C.E06.0470 Aircraft Drill Bit No.13 Cobalt 135

Product Description

The HERTEL C.E06.0470 is a cobalt aircraft extension drill bit designed for drilling in hard and abrasive materials where standard high-speed steel bits fall short. Built to wire gauge size No. 13 (0.1850 inches decimal), the bit runs a 135-degree split point with web thinning for self-centering entry and reduced thrust. The straw finish indicates heat-treated cobalt construction suited to tough alloys and stainless. At 6 inches overall length, it provides the reach needed in tight bores and recessed work common in aircraft, industrial, and heavy fabrication applications. Flute length is 2.3125 inches with a 2-flute right-hand spiral configuration.

This bit is a general-purpose aircraft extension drill intended for production and maintenance drilling in hard metals, stainless steel, and high-strength alloys. The extended overall length makes it well-suited for reaching into channels, frame members, and structural cavities where a jobber-length bit cannot reach. It meets NAS 907 standards, making it appropriate for aerospace and precision metalworking applications. Machinists, tool-and-die tradespeople, aircraft maintenance technicians, and fabricators are the primary users of this bit type.

Key Features

• Wire gauge No. 13 size, 0.1850 inches decimal diameter for precision bore sizing
• 135-degree split point with self-centering geometry reduces walking on hard surfaces
• Web-thinned tapered web lowers cutting resistance and extends tool life
• Cobalt tool material with straw finish handles heat and wear in hard alloy drilling
• 6-inch overall length provides extended reach in confined or recessed work areas
• Right-hand 2-flute spiral with 2.3125-inch flute length for efficient chip evacuation
• Meets NAS 907 standard for aerospace-grade tooling requirements

Compatibility

Designed as an OEM-style general-purpose aircraft extension drill bit suitable for use in standard straight-shank drill chucks and compatible with NAS 907-compliant tooling specifications.

Installation Notes

This drill bit is intended for use by machinists and metal fabrication tradespeople operating drill presses, hand drills, or magnetic-base drills with straight-shank chuck compatibility. Secure the workpiece fully before drilling and use appropriate cutting fluid when working hard alloys or stainless steel to reduce heat buildup. Inspect the cutting edges before each use and retire the bit if chipping or excessive wear is observed. Follow applicable shop safety standards and PPE requirements when operating rotary cutting tools.