Cle-line C23665 Aircraft Extension Drill Bit Wire 5 Hss

Product Description

The CLE-LINE C23665 is an aircraft extension drill bit designed for precision drilling in tight or deep-access applications. Built from high-speed steel with an oxide finish, this bit uses a 135-degree split point that is self-centering to reduce walking and improve hole accuracy from the first contact. The wire size 5 diameter measures 0.2055 inches, and the bit runs a 2.5-inch spiral flute with a 6-inch overall length, giving technicians the reach needed in confined spaces such as airframe structures, panels, and deep assemblies. Right-hand cutting direction and a tapered web configuration contribute to consistent chip evacuation during use. Installation is performed by licensed A and P mechanics and precision metalworking trades.

This aircraft extension bit is suited for general-purpose drilling in metal materials where extended reach is required. The 6-inch overall length positions it for use in airframe work, machinery assemblies, and structural fabrication where standard-length bits cannot reach the workpiece. The straight cylindrical shank seats securely in standard drill chucks and right-angle drilling attachments. Two flutes and a web-thinned, tapered web construction reduce cutting resistance and help maintain clean, accurate holes across a range of metal substrates.

Key Features

• Wire size 5 diameter at 0.2055 inches with a tight tolerance of +0.0000 to -0.0007 inches
• 135-degree split point is self-centering and reduces bit walking on curved or hard surfaces
• 6-inch overall length provides extended reach for deep or restricted-access drilling
• High-speed steel construction with oxide finish for general-purpose metal drilling
• 2-flute spiral design with web-thinned, tapered web for efficient chip removal
• Meets ASME B94.11M standards for drill bit dimensional accuracy

Compatibility

Designed as an OEM-style replacement and general-purpose aircraft extension drill bit compatible with standard straight-shank drill chucks and right-angle drill attachments used in metalworking and airframe applications.

Installation Notes

This bit is typically installed and operated by licensed aviation mechanics, machinists, or precision metalworking professionals. Secure the straight cylindrical shank firmly in the drill chuck before use and verify rotational runout is within acceptable limits. Use appropriate cutting fluid for the material being drilled to extend bit life and improve hole finish. Inspect the cutting edges and split point for wear or damage before each use and replace the bit if chipping or deformation is observed.