Precision Twist Drill 5998585 9/32 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5998585 is a screw machine length drill bit designed for high-performance metal drilling in demanding trade and industrial applications. Ground 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 seats securely in standard drill chucks. At 9/32 inch (0.2812 inches) diameter with an overall length of 2-11/16 inches and a flute length of 1-1/2 inches, this is a compact, stub-length tool built for rigidity and accuracy in short-reach drilling.

This bit is suited for production drilling, maintenance work, and fabrication tasks where a shorter flute length reduces deflection and improves hole accuracy. The Series R40 designation places it in a high-performance general purpose category. Primary workpiece material is listed as titanium, making it appropriate for harder metals where rigidity and a sharp cutting edge are critical. Machinists, toolroom technicians, and metal fabricators working in industrial, commercial, or maintenance environments are the typical users.

Key Features

• Screw machine (stub) length for maximum rigidity and reduced deflection
• 118-degree standard point angle with web-thinned, tapered web geometry for easier starting
• High speed steel construction for durability across a range of metal workpiece materials
• Right-hand spiral flute promotes efficient chip removal during drilling
• Straight-cylindrical shank compatible with standard drill chucks and collets
• Bright uncoated finish suitable for general purpose and re-sharpening applications

Compatibility

Designed as an OEM-style screw machine length drill bit conforming to ANSI standards, suitable for use in standard drill presses, CNC machines, and hand drills accepting a straight-cylindrical shank in the 0.2500 to 0.3000 inch diameter range.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tradespeople familiar with proper tooling procedures. Ensure the drill chuck is fully tightened and the workpiece is securely clamped before beginning any drilling operation. Use appropriate cutting fluid or coolant when drilling hard metals to extend tool life and maintain hole quality. Inspect the cutting edges before each use and discontinue use if the bit shows signs of wear or damage.