Precision Twist Drill 5999322 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5999322 is a screw machine length drill bit designed for high-performance drilling in a wide range of materials, including titanium. Built from high speed steel with a bright, uncoated finish, this bit features a 0.196 inch diameter, a 118-degree standard point angle, and a web-thinned, tapered web configuration that reduces thrust and improves chip clearance. The straight-cylindrical shank seats securely in standard drill chucks and machine collets. At 2.25 inches overall length with a 1.1875 inch flute length, this stub-length geometry provides added rigidity compared to jobber-length bits, making it well suited for close-tolerance work in production environments.

Screw machine length drill bits like the 5999322 are used in machining centers, drill presses, and hand-held production drilling operations where rigidity and accuracy matter. The Series R41 design targets general-purpose and high-performance applications across metal fabrication, maintenance, and production shops. The right-hand spiral flute and regular spiral type provide consistent chip evacuation. This bit is built to ANSI standards and carries a flute-to-diameter ratio of 2.5xD, which suits materials that generate moderate chip loads, including titanium and ferrous metals.

Key Features

• 0.196 inch diameter with a 118-degree standard point angle for clean entry on a wide range of metals
• Web-thinned, tapered web reduces drilling thrust and improves bit longevity in tough materials
• Screw machine (stub) length provides greater rigidity than jobber-length bits, reducing deflection
• High speed steel construction with bright, uncoated finish suitable for general-purpose and high-performance use
• Right-hand cut with regular spiral flute for consistent chip evacuation
• Meets ANSI standards; Series R41 designation

Compatibility

Designed as an OEM-style screw machine length drill bit for use in standard drill chucks and machine collets accepting straight-cylindrical shanks in the 0.150 to 0.200 inch diameter range.

Installation Notes

Installation and use of this drill bit should be performed by machinists or qualified trade professionals familiar with proper tooling speeds and feeds for the workpiece material. Ensure the machine is powered off and fully stopped before changing or seating tooling. Secure the straight-cylindrical shank fully in the chuck or collet to the recommended engagement depth before operation. Inspect the cutting edges and web for wear or damage before each use and replace bits that show signs of chipping or dulling to maintain dimensional accuracy.