Precision Twist Drill 6001160 Aircraft Extension Drill Bit

Product Description

The PRECISION TWIST DRILL 6001160 is a 15/64 inch (0.2344 inch decimal) high speed steel aircraft extension drill bit built for deep-reach drilling applications where a standard-length bit cannot access the work. The 135-degree split point is self-centering, eliminating the need for a center punch and reducing walking on hard or curved surfaces. The bit carries an oxide finish for basic lubricity and corrosion resistance during cutting operations. With a 2-5/8 inch flute length and 6 inch overall length, it gives technicians and tradespeople the extended reach required for structural, sheet metal, and fabrication work.

This bit is suited for drilling through steel, aluminum, and similar materials in aircraft maintenance, HVAC sheet metal work, electrical rough-in, and general fabrication where access is limited and a standard jobber-length bit falls short. The Series 500-6 designation identifies it as part of a purpose-built aircraft extension line. Right-hand spiral flutes evacuate chips efficiently during through-drilling. The tapered web and web-thinned geometry reduce thrust requirements, which matters when drilling by hand or with a right-angle drill in confined spaces.

Key Features

• 135-degree split point is self-centering — no center punch required on most materials
• 6 inch overall length provides extended reach for confined or deep-access drilling
• High speed steel construction handles steel, aluminum, and general-purpose materials
• Oxide finish adds baseline lubricity and light corrosion resistance
• Tapered web with web-thinning reduces cutting thrust and bit deflection
• Straight-cylindrical shank fits standard 3-jaw drill chucks without adapters
• Meets NAS 907 Type B standards for aircraft-grade tooling

Compatibility

Designed as a direct-fit replacement or add-to-kit extension drill for any application calling for a 15/64 inch diameter bit with a straight-cylindrical shank, including aircraft maintenance, HVAC sheet metal fabrication, and structural drilling where standard jobber-length bits cannot reach.

Installation Notes

Install the straight-cylindrical shank fully into the drill chuck and tighten securely before use. Secure the workpiece before drilling to prevent movement and bit breakage. Use cutting fluid on harder materials to extend bit life and reduce heat buildup. Follow applicable shop safety and aviation maintenance manual procedures when working on structural or aircraft components.