Hertel C.E06.0561 Aircraft Drill Bit Cobalt 135PT

Product Description

The HERTEL C.E06.0561 is a cobalt aircraft extension drill bit designed for drilling in hard and abrasive materials where extended reach and heat resistance are required. Built to a 135-degree split point geometry with web thinning, this bit self-centers on contact, reducing the need for a center punch on most surfaces. The straw finish is typical of heat-treated cobalt tooling. At 6 inches overall length with a 2.625-inch spiral flute, it provides the reach needed for deep-hole and structural drilling applications. Wire size 2 corresponds to a decimal diameter of 0.2210 inches. The straight cylindrical shank seats in standard drill chucks without adapters.

This bit is suited for aerospace, sheet metal, and structural fabrication work where NAS 907-compliant tooling is specified. The cobalt construction handles high-speed drilling in stainless steel, titanium, and other high-strength alloys without rapid edge breakdown. It is a general-purpose extended-length bit installed by machinists, aircraft maintenance technicians, and metal fabricators working on structural assemblies, skin panels, and frame components requiring consistent hole quality at depth.

Key Features

• 135-degree split point with web thinning for self-centering entry and reduced thrust
• Cobalt tool material with straw finish for heat resistance in hard-metal drilling
• 6-inch overall length for extended-reach drilling in structural applications
• Spiral flute with right-hand cutting direction for efficient chip evacuation
• Tapered web configuration for added rigidity and point strength
• Meets NAS 907 standard for aerospace-grade drill tooling

Compatibility

Designed for use in standard straight-shank drill chucks and compatible with general-purpose drilling equipment used in aerospace, metalworking, and structural fabrication environments where NAS 907-compliant tooling is required.

Installation Notes

This bit is installed by machinists and aircraft maintenance technicians using standard drill presses, hand drills, or right-angle drill equipment. Ensure the workpiece is securely fixtured and the chuck is tightened fully before operation. Use appropriate cutting fluid when drilling stainless steel or titanium to extend tool life and maintain hole quality. Inspect the cutting edge for wear before each use and replace when point geometry shows signs of rounding or chipping.