Precision Twist Drill 6001451 Aircraft Extension Drill Bit

Product Description

The PRECISION TWIST DRILL 6001451 is a high speed steel aircraft extension drill bit designed for deep-reach drilling applications in metal and aerospace-grade materials. Built to Series 501-6 standards and conforming to NAS 907 Type B, it features a 135-degree split point that self-centers on contact, reducing the need for a center punch. The 0.228-inch diameter matches wire gauge size 1. The oxide finish provides basic corrosion resistance and helps reduce friction during cutting. This bit is suited for licensed maintenance technicians, aerospace fabricators, and precision metalworkers who require accurate, extended-reach holes in tight or deep workspaces.

This drill bit is intended for general-purpose drilling in metal, including aluminum, mild steel, and similar materials where extended reach is required. The 2.625-inch spiral flute length and 6-inch overall length make it well suited for drilling through structural members, frames, and assemblies where a standard-length bit cannot reach. Its right-hand cutting direction and two-flute spiral design promote efficient chip evacuation in through-hole and blind-hole operations alike.

Key Features

• 135-degree split point for self-centering starts without a pilot hole or center punch
• High speed steel construction for durability across general-purpose metal drilling
• NAS 907 Type B compliant for aerospace and precision fabrication applications
• Oxide finish reduces surface friction and provides light corrosion resistance
• Web-thinned tapered web design reduces thrust and improves cutting efficiency
• 6-inch overall length with 2.625-inch flute provides extended reach in deep or restricted access locations

Compatibility

Designed as an OEM-style replacement or direct-specification drill bit for use in standard straight-shank drill chucks accepting a 0.228-inch cylindrical shank, conforming to NAS 907 Type B aircraft extension drill specifications.

Installation Notes

This bit is installed by machinists, aircraft maintenance technicians, and precision metalworkers using standard keyed or keyless drill chucks rated for the shank diameter. Secure the shank fully in the chuck before operation to prevent slippage under torque. Use appropriate cutting fluid for steel applications to manage heat buildup during extended drilling cycles. Always wear eye protection and secure workpieces firmly before drilling.