Precision Twist Drill 6001318 1/2 in Aircraft Drill

Product Description

The PRECISION TWIST DRILL 6001318 is a 1/2-inch high speed steel aircraft extension drill bit designed for deep-hole drilling applications in aerospace, structural, and industrial settings. The 135-degree split point tip is self-centering and web-thinned, reducing walking and cutting thrust on entry without a pilot hole. The oxide finish provides moderate lubricity and corrosion resistance during use. With a 4.5-inch flute length and 12-inch overall length, this bit reaches into recessed or deep workpiece areas that standard-length drills cannot access. It is installed and operated by machinists, aircraft mechanics, and maintenance technicians working with drill motors or drill presses.

This drill bit is suited for through-drilling in aluminum, mild steel, and similar materials encountered in aircraft structural panels, frames, and general fabrication work. The extended reach makes it practical for drilling through stacked materials or into confined spaces where a standard jobber-length bit falls short. The right-hand spiral flute geometry clears chips efficiently during extended cuts. Series 500-12 designates it as part of a product family of aircraft extension drills built to NAS 907 Type B standards.

Key Features

• 135-degree split point for self-centering entry without a pilot hole
• Web-thinned, tapered web construction reduces cutting thrust and feed force
• 4.5-inch flute length accommodates deep-hole and stacked-material drilling
• 12-inch overall length provides extended reach into recessed work areas
• Oxide finish for light corrosion resistance and reduced friction during cutting
• Right-hand spiral flutes for efficient chip evacuation

Compatibility

Built to NAS 907 Type B standards; designed as an OEM-style replacement or direct substitute for 1/2-inch aircraft extension drill bits in Series 500-12 applications.

Installation Notes

Aircraft mechanics and machinists should secure the workpiece firmly before drilling and ensure the drill motor or press is rated for the shank diameter before use. Power down all equipment before changing or inspecting bits. Proper cutting fluid or lubrication is recommended when drilling ferrous materials to preserve tool life. Follow applicable workplace safety and aviation maintenance standards when performing structural drilling operations.