Hertel C.E06.0287 Aircraft Drill Bit No. 33 Cobalt

Product Description

The HERTEL C.E06.0287 is a cobalt aircraft extension drill bit designed for drilling in hard or abrasive materials where standard high-speed steel bits fall short. Built to a 135-degree split point with web thinning, it self-centers on contact and reduces the thrust required to start the cut. The straw finish indicates the cobalt content and heat treatment applied during manufacturing. At 6 inches overall length, this extended-reach bit suits applications where standard-length tooling cannot access the work zone. Two spiral flutes and a straight cylindrical shank make it compatible with standard drill chucks. Machinists, aircraft maintenance technicians, and metalworking professionals are the primary users of this tooling.

This bit is suited for drilling in steel, stainless, titanium, and other hard alloys encountered in aerospace, industrial maintenance, and fabrication environments. The 1.5-inch flute length handles moderate material thickness while the extended body clears chips efficiently in deeper holes. The right-hand cutting direction and general-purpose tool performance rating make it applicable across a wide range of drilling operations where reach beyond a jobber-length bit is required. Compliance with NAS 907 confirms it meets aerospace tooling standards for aircraft maintenance work.

Key Features

• Cobalt tool material with straw finish for heat and wear resistance in hard alloys
• 135-degree split point with web thinning for self-centering and reduced thrust
• 6-inch overall length provides extended reach beyond standard jobber-length bits
• Two spiral flutes with tapered web configuration for efficient chip evacuation
• Straight cylindrical shank at 0.113 inches diameter fits standard drill chucks
• Meets NAS 907 aerospace tooling standard

Compatibility

Designed as an OEM-style replacement or direct-use aircraft extension drill bit for applications requiring a No. 33 wire-size diameter at extended reach in standard straight-shank drill chucks.

Installation Notes

Installation and use should be performed by qualified machinists or aircraft maintenance technicians familiar with metal drilling operations. Secure the workpiece firmly before drilling and ensure the drill chuck is properly tightened to the shank before operation. Use appropriate cutting fluid for the material being drilled to extend tool life and maintain hole quality. Inspect the cutting edges for wear before each use and replace the bit if chipping or dulling is observed.