Hertel C.E03.0476 Aircraft Extension Drill Bit 3/16 in Hss

Product Description

The HERTEL C.E03.0476 is an aircraft extension drill bit engineered for deep-reach drilling applications where a standard-length bit cannot access the work area. Built from high-speed steel with an oxide finish, this bit features a 135-degree split point that is self-centering and reduces the need for a center punch on most materials. The spiral flute geometry promotes efficient chip evacuation during the cut. With a 3/16-inch diameter and a 6-inch overall length, it is suited to precision work in tight or recessed locations. The web-thinned, tapered web configuration reduces thrust requirements and helps maintain accurate hole placement.

This bit is intended for general-purpose drilling in metal, sheet stock, and structural materials where extended reach is required. Typical applications include aircraft assembly and maintenance, HVAC sheet metal fabrication, electrical panel work, and structural steel installations. The straight cylindrical shank seats securely in standard drill chucks without slippage during operation. Right-hand cutting direction is standard for conventional drill press and handheld drill use. The 2-5/16-inch flute length provides adequate chip clearance even when drilling at full depth.

Key Features

• 135-degree split point is self-centering and eliminates walking on most surfaces
• Web-thinned tapered web reduces drilling thrust and improves hole accuracy
• High-speed steel construction handles a broad range of metals and structural materials
• Oxide finish provides a base level of corrosion resistance and reduces friction at the cutting edge
• 6-inch overall length delivers extended reach into recessed or deep work areas
• Two-flute spiral design promotes efficient chip evacuation throughout the cut

Compatibility

Designed as a general-purpose aircraft extension drill bit compatible with standard 3/16-inch drill chucks on handheld drills, drill presses, and right-angle drill attachments used in metal fabrication and maintenance applications.

Installation Notes

A licensed machinist, sheet metal mechanic, or qualified tradesperson should install and operate this bit in accordance with applicable workplace safety standards. Secure the straight cylindrical shank firmly in the chuck before operation and verify there is no runout before drilling. Always wear appropriate eye protection and secure the workpiece to prevent movement during the cut. Reduce feed pressure as the bit breaks through the far side of the material to avoid grabbing or bit deflection.