Hertel C.E06.0476 Aircraft Extension Drill Bit 3/16 in Cobalt

Product Description

The HERTEL C.E06.0476 is a cobalt aircraft extension drill bit engineered for demanding metal-drilling applications where standard-length bits cannot reach. Built to a 3/16 inch (0.1875 inch) diameter with a 6 inch overall length, this bit gives tradespeople and machinists the reach needed in tight or deep access points. The 135-degree split point is self-centering, reducing the need for a center punch and minimizing walking on hard surfaces. A straw finish helps indicate heat treatment quality. With a 2-5/16 inch spiral flute length and two right-hand flutes, it provides efficient chip evacuation during extended-depth cuts in steel, stainless, and other tough alloys.

This bit is suited for aerospace-style drilling operations, sheet metal fabrication, HVAC equipment assembly, and mechanical installation work where extended reach into confined spaces is required. It is commonly used by aircraft maintenance technicians, sheet metal workers, and experienced mechanical contractors who drill through structural steel, stainless panels, or layered materials where a standard jobber-length bit is not practical. The straight cylindrical shank accepts standard drill chucks without adapters.

Key Features

• Cobalt tool material for high-heat resistance and durability in hard metals
• 135-degree split point with self-centering geometry eliminates pilot holes on most surfaces
• 6 inch overall length provides extended reach into recessed or obstructed areas
• Spiral flute design with web thinning promotes efficient chip clearing and reduced thrust
• Tapered web configuration and web-thinned point reduce breakage risk in deep-hole drilling
• Meets NAS 907 standard for aircraft-quality drill bit performance

Compatibility

Designed as a general-purpose aircraft extension drill bit compatible with standard drill chucks accepting a 3/16 inch straight cylindrical shank.

Installation Notes

Installation of this bit should be performed by qualified technicians familiar with drill press or handheld drill operation on metal substrates. Ensure the chuck is fully tightened and the workpiece is securely clamped before drilling. Use appropriate cutting fluid for hard alloys to extend bit life and reduce heat buildup. Follow applicable shop safety standards and wear proper eye protection during use.