Hertel C.E03.0287 Aircraft Extension Drill Bit 33 Hss

Product Description

The HERTEL C.E03.0287 is an aircraft extension drill bit engineered for precision drilling in confined or hard-to-reach spaces where a standard-length bit cannot reach. Built from high-speed steel (HSS) with an oxide finish, this bit measures 6 inches in overall length and accepts a straight cylindrical shank with a 0.1130 inch diameter. The 135-degree split point is self-centering, eliminating the need for a center punch on most surfaces. The web-thinned, tapered web construction reduces thrust and improves chip evacuation. This bit is intended for use by machinists, aerospace technicians, and maintenance professionals working on aircraft structures, sheet metal assemblies, and other precision fabrication tasks.

This drill bit is suited for aircraft maintenance, airframe repair, and general precision metalworking applications where extended reach is required. The right-hand spiral flute with a 1.5 inch flute length handles standard ferrous and non-ferrous stock. Its general-purpose tool performance rating makes it appropriate for production and maintenance environments alike. The 135-degree split point geometry improves accuracy on curved or angled surfaces without a pilot hole. Compliance with NAS 907 confirms it meets aerospace drill bit dimensional and performance standards.

Key Features

• No. 33 wire gauge size, 0.1130 inch decimal diameter
• 135-degree split point with self-centering geometry — no center punch required
• 6 inch overall length for extended reach in confined spaces
• 1.5 inch spiral flute length with web-thinned, tapered web for reduced thrust
• High-speed steel construction with oxide finish for corrosion resistance
• Meets NAS 907 aerospace drill bit standard
• Right-hand cutting direction, 2-flute design

Compatibility

Designed as a general-purpose aircraft extension drill bit compatible with standard straight-shank drill chucks accepting a 0.1130 inch shank diameter.

Installation Notes

Installation is performed by machinists or aircraft maintenance technicians using a standard keyed or keyless drill chuck. Secure the workpiece before drilling and verify chuck grip on the straight cylindrical shank before applying power. Follow applicable shop safety procedures and relevant aerospace maintenance manual requirements when drilling aircraft structures. Do not exceed the recommended RPM range for the material being drilled to avoid premature tool wear or breakage.