Precision Twist Drill 6001445 Aircraft Extension Drill Bit

Product Description

The PRECISION TWIST DRILL 6001445 is a high speed steel aircraft extension drill bit designed for deep-reach drilling applications where standard-length bits cannot access the work area. Built to Series 501-12 specifications, it features a 135-degree split point that is self-centering and web-thinned, reducing the force needed to start a hole without a center punch. The 0.201-inch (Wire Size #7) straight-cylindrical shank pairs with the spiral flute geometry to evacuate chips efficiently. An oxide finish provides a baseline level of surface protection. Licensed HVAC, aviation, and general metal fabrication technicians working with structural assemblies, panels, and tubing will find this bit suited to production and field work alike.

This drill bit is intended for general-purpose metal drilling in applications requiring extended reach, such as drilling through aircraft structures, HVAC sheet metal panels, electrical enclosures, and plumbing supports where standard-length bits cannot reach the target bore. The 12-inch overall length and 2.4375-inch flute length give the operator clearance to work in confined or recessed spaces. The right-hand cutting direction and two-flute spiral configuration are standard for ferrous and non-ferrous metals encountered in trade applications.

Key Features

• 135-degree split point is self-centering and web-thinned for reduced starting pressure
• 12-inch overall length provides extended reach for confined or deep-access drilling
• High speed steel construction for durability in ferrous and non-ferrous metal
• 0.201-inch diameter straight-cylindrical shank fits standard drill chucks
• Oxide finish for basic corrosion and wear resistance
• Meets NAS 907 Type B standards

Compatibility

Designed as a general-purpose aircraft extension drill bit compatible with standard drill chucks accepting a 0.201-inch straight-cylindrical shank. Meets NAS 907 Type B standards for use in aerospace and industrial drilling applications.

Installation Notes

Install and operate this bit using a drill press, hand drill, or right-angle drill with a chuck sized for a 0.201-inch shank. Secure the workpiece firmly before drilling to prevent walking or deflection, particularly when using the extended length. Apply appropriate cutting fluid when drilling harder metals to extend bit life and maintain tolerances. Inspect the split point for chipping or wear before each use and replace the bit if the cutting edges show degradation.