Precision Twist Drill 5999326 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5999326 is a screw machine length drill bit designed for high-performance metal cutting in demanding trade and production environments. It measures 0.234 inches (15/64 inch) in diameter with an overall length of 2-7/16 inches and a flute length of 1-5/16 inches. The bit is manufactured from high speed steel with a bright/uncoated finish and features a standard 118-degree point angle. The web-thinned, tapered web construction reduces thrust and improves chip evacuation. This bit is suited for machinists, maintenance technicians, and fabricators who need a reliable general-purpose stub-length drill for tight clearance applications.

This screw machine length bit is built for use in drill presses, CNC machines, and hand-held power drills in production and maintenance settings. Its shorter-than-jobber-length body increases rigidity and reduces deflection when drilling in confined spaces or on short-setup fixtures. The primary rated workpiece material is titanium, making it appropriate for aerospace, industrial, and precision fabrication work where harder materials are encountered. It is part of the Series R42 lineup and conforms to ANSI standards.

Key Features

• 15/64 inch (0.234 inch) diameter — sized within the 0.2000 to 0.2500 inch range
• High speed steel construction for durability across general-purpose and high-performance applications
• 118-degree standard point angle for consistent entry on flat and curved workpiece surfaces
• Web-thinned, tapered web design reduces cutting resistance and improves chip clearing
• Straight-cylindrical shank compatible with standard three-jaw chucks
• Screw machine (stub) length body increases rigidity and minimizes deflection
• Right-hand spiral flute cut; conforms to ANSI standards

Compatibility

Designed as an OEM-style replacement and general-purpose screw machine drill bit suitable for use with standard drill presses, lathes, CNC machining centers, and hand-held power tools equipped with a straight-cylindrical shank chuck. Rated primarily for titanium workpieces and compatible with general-purpose metal drilling applications per Series R42 specifications.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with rotating cutting tools. Secure the straight-cylindrical shank firmly in the chuck before operation and confirm the drill press or tool is powered down before changing bits. Always wear appropriate eye protection and follow applicable ANSI and shop safety standards when operating drill equipment. Do not exceed the rated cutting parameters for the workpiece material.