Precision Twist Drill 5998584 11/32 in Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5998584 is a screw machine length drill bit designed for high-performance drilling in demanding trade and industrial applications. Built from high speed steel with a bright, uncoated finish, it measures 11/32 inch (0.3438 inches) in diameter and carries a 118-degree standard point angle. The straight-cylindrical shank and web-thinned, tapered web construction reduce entry resistance and improve chip evacuation. At 3 inches overall length with a 1-11/16-inch flute length, it fits stub-length drill chucks and is suited for machinists, maintenance technicians, and fabricators working in tight clearance setups.

This bit is rated for right-hand spiral flute cutting and is listed under Series R40 with a 2.5xD flute-to-diameter ratio. Its primary workpiece material rating is titanium, making it suitable for hard metal drilling where a general-purpose high speed steel bit with proper geometry is appropriate. The ANSI-conforming design means consistent dimensional tolerances across the series, which matters when running production drilling cycles or working to tight hole tolerances in sheet metal or structural components.

Key Features

• 11/32 inch (0.3438 inches) diameter with 118-degree standard point angle for clean entry
• High speed steel construction rated for titanium and other hard workpiece materials
• Web-thinned, tapered web reduces thrust and improves chip flow
• Screw machine (stub) length at 3 inches overall for use in tight clearance setups
• Bright, uncoated finish — no coating to chip or delaminate under high heat cycles
• Right-hand spiral flute, straight-cylindrical shank, ANSI-compliant tolerances

Compatibility

Designed as an OEM-style replacement or direct-use screw machine drill bit for standard 3-jaw drill chucks and collet systems accepting a straight-cylindrical shank in the 0.3000 to 0.3500 inch diameter range, conforming to ANSI standards.

Installation Notes

This bit is installed by machinists and maintenance technicians in drill presses, CNC machining centers, and hand-operated drill motors with compatible chuck capacities. Secure the shank fully in the chuck and verify runout before drilling. Use appropriate cutting fluid or coolant for the workpiece material, particularly when drilling titanium or hardened alloys. Inspect the cutting edges for wear before each use and replace the bit if the point is chipped or the cutting geometry is compromised.