Precision Twist Drill 5999330 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5999330 is a screw machine length drill bit designed for high-performance drilling in a variety of materials, including titanium and other metals. Built 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. With a straight-cylindrical shank and a web-thinned, tapered web configuration, it delivers consistent cutting performance in stub-length drilling applications. It is part of the Series R42 line and conforms to ANSI standards. Licensed trade professionals and industrial maintenance technicians are the primary users.

This screw machine length bit is suited for applications requiring a shorter, stiffer drill than a jobber-length bit, reducing deflection in precision hole locations. The 0.238-inch diameter corresponds to Letter Size B, falling within the 0.2000 to 0.2500-inch size range. The 2.5xD flute-to-diameter ratio and 1-3/8-inch flute length make it well-matched for machining operations in manual drill presses, CNC equipment, and hand-held power tools where rigidity and accuracy are priorities. It is rated for general purpose grade applications with high performance tooling characteristics.

Key Features

• High speed steel construction provides hardness and wear resistance for metal drilling
• 118-degree standard point angle suits a wide range of common workpiece materials including titanium
• Right-hand spiral flute promotes efficient chip removal during cutting
• Web-thinned, tapered web reduces thrust required at the point for cleaner entry
• Straight-cylindrical shank fits standard drill chucks without adapters
• Screw machine length body increases rigidity and reduces deflection compared to jobber-length bits

Compatibility

Designed as an OEM-style screw machine length replacement drill bit suitable for use in drill presses, CNC machining centers, and hand-held power tools accepting a straight-cylindrical shank; conforms to ANSI standards as specified in the Series R42 designation.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with rotating cutting tools. Ensure the drill chuck is fully secured and the workpiece is clamped before operation. Appropriate personal protective equipment, including eye protection, must be worn at all times during drilling. Do not exceed the recommended speed and feed rates for the workpiece material being drilled.