Precision Twist Drill 5998567 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5998567 is a screw machine length drill bit designed for high-performance drilling in trade and industrial applications. Built from high speed steel with a bright, uncoated finish, this bit features a 118-degree standard point angle and a right-hand spiral flute for efficient chip evacuation. The straight-cylindrical shank fits standard drill chucks without modification. At 0.0625 inches (1/16 inch) in diameter and 1.625 inches in overall length, this stub-length design provides added rigidity and reduced deflection compared to jobber-length bits, making it well suited for precision hole placement in confined work areas.

This bit is rated for use in high-performance drilling applications with a primary workpiece material designation of titanium, though its general-purpose grade makes it suitable across a range of metals and materials encountered in HVAC, plumbing, electrical, and light fabrication work. The screw machine length format is common in production drilling, sheet metal work, and equipment repair where shorter bit length reduces chatter and improves positional accuracy. The R40 series designation identifies it within Precision Twist Drill standard catalog offerings.

Key Features

• 0.0625 inch (1/16 inch) diameter, screw machine (stub) length for maximum rigidity
• High speed steel construction rated for high-performance drilling including titanium
• 118-degree standard point angle with web-thinned, tapered web configuration
• Right-hand cut with regular spiral flute for clean chip removal
• Bright, uncoated finish — no coating to chip or flake during use
• Straight-cylindrical shank compatible with standard drill chucks
• Meets ANSI standards; Series R40

Compatibility

Designed as a general-purpose screw machine length drill bit for use in standard drill chucks and drill presses; primary workpiece material designation is titanium, with broad suitability across metals and materials common in trade service and light fabrication work.

Installation Notes

This bit is installed by trade professionals including HVAC technicians, electricians, plumbers, and machinists using standard drill chucks on handheld or bench-mounted equipment. Ensure the chuck is fully tightened and the workpiece is secured before drilling. Use appropriate cutting fluid when drilling hard metals to extend bit life and maintain point geometry. Inspect the cutting edge before each use and replace bits that show signs of dulling or point damage.