Precision Twist Drill 6001195 Aircraft Extension Drill Bit

Product Description

The PRECISION TWIST DRILL 6001195 is a high speed steel aircraft extension drill bit designed for deep-reach drilling in structural and fabrication applications. Built to Series 500-6 standards, it features a 135-degree split point that is self-centering and eliminates the need for a center punch on most materials. The spiral flute geometry is web-thinned with a tapered web configuration to reduce thrust and improve chip evacuation. The oxide finish provides a baseline level of lubricity and corrosion resistance during use. At 29/64 inch (0.4531 inch decimal) in diameter with a 4.1875-inch flute length, this bit handles extended-reach jobs where standard-length drills cannot reach.

This drill bit is suited for aerospace, structural steel, sheet metal, and general fabrication work where extended flute length is required to drill through thick stock or deep cavities. The straight-cylindrical shank seats directly in standard drill chucks without adapters. Right-hand cutting direction is standard for conventional drill presses, hand drills, and magnetic base drills. It is sold individually and is appropriate for use by aircraft maintenance technicians, structural ironworkers, millwrights, and general trade fabricators. This bit meets NAS 907 Type B standards, making it a suitable choice for work requiring documented material compliance.

Key Features

• 135-degree split point is self-centering and reduces walking on entry
• Web-thinned tapered web lowers drilling thrust and extends tool life
• 4.1875-inch flute length provides extended reach for deep-hole applications
• High speed steel construction handles steel, aluminum, and general-purpose materials
• Oxide finish reduces friction and provides light corrosion resistance
• Meets NAS 907 Type B standards for controlled applications

Compatibility

Designed as a general-purpose extended-length drill bit compatible with any standard drill chuck accepting a 29/64-inch straight-cylindrical shank.

Installation Notes

A licensed machinist, aircraft maintenance technician, or qualified fabricator should select drill speed and feed rate appropriate for the workpiece material. Secure the workpiece firmly before drilling and ensure the chuck is tightened properly to prevent shank slippage. Allow chips to clear the flutes regularly when drilling deep holes to prevent heat buildup and bit breakage. Wear appropriate eye protection per applicable shop safety requirements.