Precision Twist Drill 5999293 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5999293 is a screw machine length drill bit designed for high-performance drilling in tight-clearance applications. Measuring 0.043 inches in diameter with an overall length of 1.375 inches and a flute length of 0.5 inches, this bit is built for compact drill presses, screw machines, and CNC equipment where stub-length tooling is required. Manufactured from high speed steel with a bright uncoated finish, it features a 118-degree point angle, spiral flutes, and a web-thinned tapered web for reduced thrust and cleaner entry. A licensed HVAC tech, machinist, or metalworking professional will find this bit suited to precision drilling tasks in production environments.

This drill bit is rated for use on titanium as its primary workpiece material, making it appropriate for demanding metalworking and fabrication applications. The screw machine length format shortens the working reach compared to jobber-length bits, improving rigidity and reducing deflection during high-speed or repetitive drilling cycles. The straight-cylindrical shank fits standard three-jaw drill chucks and collet holders. This bit conforms to ANSI standards and is part of the R41 series, which is designed for general-purpose high-performance drilling at a 2.5xD flute-to-diameter ratio.

Key Features

• 0.043 inch diameter with wire gauge size #57 designation
• 118-degree standard point angle with web-thinned tapered web for reduced entry thrust
• High speed steel construction with bright uncoated finish
• Screw machine length format for improved rigidity and reduced deflection
• Right-hand spiral flute with 2.5xD flute-to-diameter ratio
• ANSI-compliant R41 series, rated for titanium and general-purpose metalworking

Compatibility

Designed as a screw machine length replacement drill bit compatible with standard three-jaw drill chucks and collet holders that accept straight-cylindrical shanks in production machining and fabrication setups.

Installation Notes

This bit is installed by machinists or metalworking professionals using standard drill chuck or collet tooling. Ensure the machine spindle is fully stopped and locked out before changing tooling. Secure the shank fully in the chuck or collet to the recommended engagement depth before operation. Use appropriate cutting fluid for titanium and other hard metals to extend tool life and maintain hole quality.