Hertel C.E03.0820 Aircraft Extension Drill Bit Letter P

Product Description

The HERTEL C.E03.0820 is an aircraft extension drill bit sized to Letter P (0.3230 inches decimal) with a 135-degree split point and a high-speed steel construction with an oxide finish. Designed for extended reach drilling, the bit measures 6 inches in overall length with a 3.3125-inch spiral flute and a straight cylindrical shank at 0.3230 inches in diameter. The web-thinned, tapered web geometry reduces cutting resistance and improves chip evacuation. It cuts right-hand and is self-centering at entry, making it well-suited for precision drilling in tight or deep-access locations. This bit is intended for use by aerospace maintenance technicians, machinists, and experienced metalworking tradespeople.

This extension drill bit is built for applications requiring greater reach than a standard jobber-length bit provides, such as drilling through aircraft structures, deep assemblies, or stacked-material workpieces. The two-flute spiral design handles ferrous and non-ferrous metals common to aviation and industrial maintenance work. The oxide finish provides mild corrosion resistance during storage and use. It conforms to NAS 907 standards, making it appropriate for aerospace and defense maintenance environments where dimensional and material compliance is required.

Key Features

• Letter P size at 0.3230 inches decimal diameter for precise hole sizing
• 135-degree split point is self-centering and reduces walking on entry
• 6-inch overall length provides extended reach over standard jobber bits
• High-speed steel construction with oxide finish for durability in metalworking applications
• Web-thinned tapered web reduces thrust and improves chip flow
• Meets NAS 907 standard for aerospace and industrial compliance

Compatibility

Designed as an OEM-style replacement or standard-use aircraft extension drill bit for applications requiring a Letter P, 0.3230-inch diameter, straight-shank bit conforming to NAS 907 specifications.

Installation Notes

This bit is installed into a compatible drill chuck accepting a 0.3230-inch straight cylindrical shank. Ensure the drill press, hand drill, or right-angle drill is fully powered down and secured before bit changes. Use appropriate cutting fluid for the workpiece material to extend tool life and maintain hole quality. Always wear eye protection and secure the workpiece firmly before drilling.