Precision Twist Drill 5999249 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5999249 is a screw machine length drill bit designed for high-performance metal drilling in production and job-shop environments. Built from high speed steel (HSS) with a bright/uncoated finish, it measures 0.076 inches in diameter with an overall length of 1-11/16 inches and a flute length of 11/16 inches. The 118-degree standard point angle and web-thinned, tapered web construction reduce entry force and improve chip clearance. Right-hand cut with a regular spiral flute, this bit suits machinists, tool-and-die techs, and precision fabricators working with close-tolerance hole applications.

This drill bit is rated for general-purpose drilling with high performance characteristics, particularly suited for use in titanium as the primary workpiece material, as noted by the manufacturer. The screw machine length format — shorter than jobber length — provides added rigidity, making it well suited for drill press, CNC, or turret lathe applications where minimizing deflection and maintaining positional accuracy are critical. The straight-cylindrical shank fits standard drill chucks without adapters. Package quantity is 1 bit per unit.

Key Features

• 0.076 inch diameter wire size #48, screw machine (stub) length for added rigidity
• High speed steel construction with bright/uncoated finish for general-purpose use
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust and cleaner entry
• Right-hand cut, regular spiral flute for efficient chip evacuation
• Straight-cylindrical shank compatible with standard drill chucks
• Meets ANSI standards; Series R41 designation

Compatibility

Designed as an OEM-style screw machine length drill bit for use in standard drill chucks, CNC machining centers, drill presses, and turret lathes accepting straight-cylindrical shanks. Listed primary workpiece material is titanium; general-purpose grade also suitable for a range of metals per Series R41 application data.

Installation Notes

Installation is performed by machinists or tool operators familiar with drill press, CNC, or manual lathe operation. Secure the shank fully in the chuck and verify runout before beginning a cut. Appropriate cutting fluid or coolant is recommended when drilling titanium or hard metals even though this bit does not feature through-coolant capability. Follow shop safety protocols and applicable ANSI machine guarding standards when operating drilling equipment.