Precision Twist Drill 5998592 9/64 in Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5998592 is a screw machine length drill bit designed for high-performance drilling in demanding trade and production environments. Manufactured from high speed steel with a bright, uncoated finish, this bit features a 9/64 inch (0.1406 inch) diameter, a 118-degree standard point angle, and a right-hand spiral flute for efficient chip evacuation. The web-thinned, tapered web design reduces cutting resistance and improves penetration, making it well suited for machinists, fabricators, and maintenance technicians working with tight tolerances on short-stroke drill presses and screw machines. It conforms to ANSI standards and is rated for general purpose and high-performance applications.

This bit is built for use in screw machine operations, CNC lathes, drill presses, and hand-held power drills where a shorter flute length and compact overall length are required. The Series R40 designation places it in a recognized line of production-grade tooling. The primary workpiece material rating is titanium, though the high speed steel construction also handles steel, aluminum, and other common materials encountered in light industrial and trade work. Each unit is sold individually and must be ordered in multiples of 12.

Key Features

• 9/64 inch (0.1406 inch) diameter with a 118-degree standard point angle for accurate starting and clean entry
• High speed steel construction rated for titanium and general-purpose workpiece materials
• Bright, uncoated finish provides good lubricity and allows easy visual inspection for wear
• Web-thinned, tapered web design reduces thrust and improves cutting efficiency
• Straight-cylindrical shank fits standard drill chucks without adapters
• Screw machine length — 1-15/16 inch overall length with 15/16 inch flute — optimizes rigidity in short-travel setups
• ANSI-compliant Series R40 tooling for consistent dimensional accuracy

Compatibility

Designed as a general-purpose screw machine length drill bit suitable for use in standard drill chucks, screw machines, CNC lathes, and drill presses that accept straight-cylindrical shank tooling in the 0.1000 to 0.1500 inch diameter range.

Installation Notes

Installation is performed by machinists or maintenance technicians familiar with rotating cutting tools. Secure the straight-cylindrical shank firmly in the drill chuck before operation and verify chuck key removal prior to powering the machine. Always use appropriate cutting fluid or lubrication when drilling hard materials to extend tool life and prevent premature wear. Follow applicable shop safety standards and machine manufacturer guidelines for speed and feed rates.