Hertel C.E06.0185 Drill Bit Size 49 Cobalt 135 Point

Product Description

The HERTEL C.E06.0185 is a cobalt aircraft extension drill bit designed for drilling in hard and tough materials where standard-length bits cannot reach. Built to wire gauge size 49 (0.0730 inches decimal), this bit features a 135-degree split point that reduces walking and improves self-centering on entry without a center punch. The straw finish indicates heat-treated cobalt steel construction, suited for high-speed drilling in stainless steel, hardened alloys, and aerospace-grade materials. With a 6-inch overall length and a 1-inch spiral flute, it delivers chip evacuation in deep or restricted-access holes. Two right-hand flutes with a tapered web and web-thinned geometry reduce thrust and improve chip flow.

This aircraft extension bit is intended for use in aerospace, sheet metal, and structural fabrication applications where standard drill bit reach is insufficient. The extended shank allows access into recessed cavities, tight airframe sections, and confined structural assemblies. It is appropriate for general-purpose production drilling by machinists, aerospace maintenance technicians, and sheet metal workers. The cobalt construction makes it suitable for drilling hard metals without needing carbide tooling.

Key Features

• Wire gauge size 49 (0.0730 inches decimal) straight cylindrical shank for standard chuck compatibility
• 135-degree split point with self-centering geometry reduces walking on entry
• Web-thinned tapered web reduces drilling thrust and extends tool life in hard materials
• Cobalt tool material with straw finish for heat resistance in demanding alloys
• 6-inch overall length for extended reach in confined or deep-access applications
• Right-hand spiral flute with 1-inch flute length for chip evacuation
• Meets NAS 907 standard for aircraft drill bit dimensional requirements

Compatibility

Designed as a general-purpose aircraft extension drill bit conforming to NAS 907, suitable for use in standard drill chucks and pneumatic drilling equipment that accept a 0.0730-inch straight cylindrical shank.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with metalworking operations. Secure the workpiece and verify the drill chuck is properly tightened before operation. Use appropriate cutting fluid when drilling hard alloys to reduce heat buildup and extend bit life. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point geometry is compromised.