Precision Twist Drill 6001459 Aircraft Extension Drill Bit

Product Description

The PRECISION TWIST DRILL 6001459 is a high speed steel aircraft extension drill bit designed for drilling in tight-clearance and deep-reach applications where a standard-length drill cannot access the worksite. Built to Series 501-6 specifications, this drill carries a wire gauge size of 13, which corresponds to a decimal diameter of 0.185 inches, and features a 135-degree split point that is self-centering and requires no center punch on most materials. The oxide finish provides a degree of lubricity and corrosion resistance during operation. With a spiral flute length of 2.3125 inches and a 4xD flute-to-diameter ratio, it clears chips efficiently in extended-reach bores.

This drill bit is suited for use in aerospace, aviation maintenance, and general metalworking applications where extended reach is required. It is commonly used by aircraft maintenance technicians, machinists, and sheet metal workers drilling aluminum, mild steel, and similar structural materials in confined or recessed locations. The right-hand cutting direction and two-flute spiral design are standard for general-purpose hole production in both production and field service environments. The straight-cylindrical shank seats in any standard drill chuck without an adapter.

Key Features

• Wire size 13 corresponds to 0.185 inches decimal diameter for precise hole sizing
• 135-degree split point is self-centering and eliminates the need for a center punch on most materials
• High speed steel construction provides heat resistance for drilling metal
• Oxide finish reduces friction and provides light corrosion resistance
• Extended overall length of 6 inches delivers reach beyond standard jobber-length bits
• Web-thinned tapered web reduces thrust and improves cutting efficiency
• Meets NAS 907 Type B standards for aircraft drilling applications

Compatibility

Designed as a general-purpose aircraft extension drill bit compatible with any standard drill chuck accepting a 0.185-inch straight-cylindrical shank, suitable for use with handheld drills, drill presses, and right-angle drilling attachments common in aviation and metalworking environments.

Installation Notes

Installation of this drill bit is performed by machinists, aircraft maintenance technicians, and sheet metal workers using standard or right-angle drill equipment. Secure the straight-cylindrical shank firmly in a properly sized drill chuck before operation and confirm chuck key is removed before starting the drill. Use appropriate cutting fluid for the material being drilled to extend tool life and maintain hole quality. Follow applicable workplace safety standards and wear eye protection during all drilling operations.