Hertel C.E06.0579 Aircraft Drill Bit No.1 Cobalt 135pt

Product Description

The HERTEL C.E06.0579 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 a No. 1 wire gauge size (0.2280 inches decimal), it features a 135-degree split point that self-centers on contact, reducing walking and the need for a center punch. The straw finish indicates a heat-treated cobalt steel construction capable of handling elevated cutting temperatures. At 6 inches overall length with a 2.625-inch spiral flute, this bit provides the extended reach required in aircraft assembly, automotive, and structural fabrication applications. It meets NAS 907 standards and is suited for installation by machinists, maintenance mechanics, and aerospace fabricators.

This bit is intended for use in tight or deep-clearance drilling scenarios where standard-length bits cannot reach. The extended shank and spiral flute design help evacuate chips efficiently during through-hole drilling in steel, stainless steel, cast iron, and other hard metals. The straight cylindrical shank fits standard drill chucks without adapters. General-purpose tool performance makes it appropriate for both production and maintenance environments, including aircraft structural repair, sheet metal work, and heavy equipment fabrication.

Key Features

• No. 1 wire size (0.2280 inches) straight cylindrical shank for standard chuck compatibility
• 135-degree split point with self-centering geometry reduces setup time and pilot hole requirements
• Cobalt steel construction with straw finish handles high cutting temperatures in hard metals
• 2.625-inch spiral flute length promotes efficient chip evacuation in deep or extended drilling
• Web-thinned, tapered web design reduces thrust force and improves cutting efficiency
• Meets NAS 907 standard for aircraft-grade drill bit performance

Compatibility

Designed as an OEM-style aircraft extension drill bit suitable for use in standard drill chucks accepting a 0.2280-inch straight cylindrical shank, for drilling in hard metals and aerospace-grade materials.

Installation Notes

This bit is installed by machinists, aircraft mechanics, and maintenance technicians using standard keyed or keyless drill chucks. Ensure the workpiece is securely clamped before drilling and use appropriate cutting fluid when working in hard metals to extend bit life. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed. Follow applicable shop safety procedures and relevant industry standards for rotating tool use.