Hertel C.E06.0244 Aircraft Drill Bit No. 41 Cobalt

Product Description

The HERTEL C.E06.0244 is a cobalt aircraft extension drill bit designed for drilling in tough materials where standard-length bits cannot reach. Built to a 135-degree split point with web thinning, it self-centers on contact and reduces the force needed to start a hole without a center punch. The straw finish indicates heat treatment appropriate for cobalt-grade tooling. With a straight cylindrical shank measuring 0.0960 inches in diameter and a 6-inch overall length, this bit fits standard drill chucks and is well suited for aerospace, sheet metal, and structural fabrication work where extended reach is required.

This bit is intended for right-hand cutting in ferrous metals, stainless steel, hard alloys, and similar materials that generate high heat and wear through conventional high-speed steel tooling. The 1.375-inch spiral flute evacuates chips efficiently during extended-reach drilling. A tapered web and 2-flute configuration keep cutting geometry consistent through the full flute length. This is a general-purpose tool appropriate for production drilling, maintenance, and repair applications in fabrication shops, aerospace facilities, and industrial maintenance environments. A licensed machinist, toolmaker, or experienced fabricator would be the typical user.

Key Features

• Cobalt tool material resists heat and wear when drilling hard metals and alloys
• 135-degree split point with web thinning for self-centering starts without a center punch
• 6-inch overall length provides extended reach into recessed or deep-clearance locations
• Straw finish heat treatment appropriate for high-performance cobalt drill stock
• Right-hand spiral flute evacuates chips and reduces heat buildup during drilling
• Meets NAS 907 standard for aircraft extension drill bits

Compatibility

Designed as an OEM-style aircraft extension drill bit conforming to NAS 907, suitable for use in standard straight-shank drill chucks and driver systems accepting a 0.0960-inch shank diameter.

Installation Notes

This bit is installed and used by machinists, fabricators, and aerospace maintenance technicians. Secure the straight cylindrical shank firmly in a compatible drill chuck before use. Always use appropriate cutting fluid for the workpiece material to extend bit life and reduce heat. Inspect the cutting edges and web for wear or chipping before each use and do not operate a damaged bit.