Hertel C.E07.0462 Aircraft Extension Drill Bit

Product Description

The HERTEL C.E07.0462 is a cobalt aircraft extension drill bit designed for deep-reach drilling in aerospace and industrial applications. Built to NAS 907 standards, this bit features a 135-degree split point that is self-centering and reduces the need for a center punch on most surfaces. The cobalt construction delivers heat resistance and edge retention when cutting hard metals, stainless steel, and high-strength alloys. A straw finish indicates the cobalt content and provides a baseline level of surface protection. With an overall length of 12 inches and a right-hand spiral flute, this bit is a practical tool for licensed technicians and skilled tradespeople working in tight or extended-reach drilling scenarios.

Aircraft extension drill bits like the C.E07.0462 are used wherever standard-length bits cannot reach — through structural assemblies, deep cavities, or stacked material. The No. 14 wire gauge size (0.1820 inches decimal) suits precision hole work in metal fabrication, aviation maintenance, and industrial manufacturing environments. The web-thinned, tapered web configuration reduces cutting resistance and improves chip evacuation during longer cuts. General-purpose tool performance classification means this bit handles a wide range of ferrous and non-ferrous metals without requiring specialty setups.

Key Features

• Cobalt tool material for superior heat and wear resistance in hard-metal drilling
• 135-degree split point with self-centering geometry — reduces or eliminates center-punching
• 12-inch overall length provides extended reach for deep or obstructed drilling locations
• Spiral flute with web-thinned, tapered web for efficient chip evacuation
• Straw finish applied over cobalt substrate
• Right-hand cutting direction with straight cylindrical shank (0.1820 inches diameter)
• Meets NAS 907 standard

Compatibility

Designed as an OEM-style aircraft extension drill bit for use in standard drill chucks and right-angle drill motors accepting a 0.1820-inch straight cylindrical shank. Suitable for general-purpose metal drilling applications conforming to NAS 907.

Installation Notes

Installation and use should be performed by qualified machinists, aircraft maintenance technicians, or trained metalworkers familiar with proper drilling techniques for hard metals. Secure the workpiece before drilling and confirm the drill chuck is properly tightened on the straight shank before operation. Use appropriate cutting fluid or lubricant when drilling stainless steel or high-strength alloys to extend bit life and maintain dimensional accuracy. Inspect the cutting edges before each use and replace the bit if chipping, heat discoloration beyond normal straw color, or edge degradation is observed.