Precision Twist Drill 5998605 13/32 in Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5998605 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 13/32 inch (0.4062 inches) in diameter with an overall length of 3-5/16 inches and a flute length of 1-15/16 inches. The 118-degree standard point angle and web-thinned, tapered web configuration reduce entry force and improve chip evacuation. This bit is part of the Series R40 line and carries an ANSI designation, making it a reliable choice for machinists, pipefitters, and maintenance technicians working with tight tolerances.

This screw machine length drill bit is suited for use in drill presses, CNC machining centers, and hand-held power drills where a shorter, stiffer bit is needed for improved accuracy and reduced deflection. The 2.5xD flute-to-diameter ratio supports efficient chip clearing in moderate-depth holes. It is rated for primary use in titanium and performs well across a broad range of ferrous and non-ferrous metals encountered in mechanical, HVAC, plumbing, and electrical trade work. It accepts standard straight-cylindrical chuck setups with no adapter required.

Key Features

• 13/32 inch (0.4062 inches) diameter, falling within the 0.4000 to 0.4500 inch range
• 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
• Screw machine length body (3-5/16 inches overall) for increased rigidity and accuracy
• Regular spiral flute with 2.5xD ratio supports chip evacuation in typical hole depths
• Right-hand cut with straight-cylindrical shank fits standard drill chucks

Compatibility

Designed as an OEM-style screw machine length replacement drill bit for use in standard straight-cylindrical chuck applications across drill presses, lathes, and portable power tools. Meets ANSI standards as noted in the Series R40 specification.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with rotating cutting tools and applicable ANSI safety standards. Secure the shank fully in the chuck before operation and verify chuck key is removed prior to starting the machine. Do not exceed the recommended feed rate or spindle speed for the workpiece material. Eye protection and appropriate guarding must be in place at all times during drilling operations.