Precision Twist Drill 5998350 9/64 in Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 5998350 is a jobber-length twist drill bit designed for general-purpose drilling in a wide range of materials. It features a 9/64 inch (0.1406 inch decimal) diameter with a standard 118-degree point angle, a two-flute right-hand spiral configuration, and a bright uncoated high speed steel construction. Overall length is 2.875 inches with a 1.75-inch flute length, giving it the reach typical of jobber-length tooling. A tapered web with web thinning reduces thrust at the point and improves chip evacuation. This bit is installed and used by machinists, maintenance technicians, pipefitters, and general tradespeople working in shop or field environments.

This bit is suited for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. The 12xD flute-to-diameter ratio provides adequate chip clearance for through-hole drilling in moderate-depth applications. The straight-cylindrical shank accepts standard three-jaw drill chucks on handheld drills, drill presses, and CNC or manual lathes. It belongs to the Series R10P-R15P-R18P family and meets ANSI standards. Maximum drilling depth is 1.75 inches.

Key Features

• 9/64 inch diameter (0.1406 inch decimal) straight-cylindrical shank for standard chuck compatibility
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• High speed steel construction, bright uncoated finish
• Two-flute regular spiral design for efficient chip evacuation
• Right-hand cut; compatible with conventional clockwise drill rotation
• Meets ANSI specification standards; rated for steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium

Compatibility

Designed as a general-purpose jobber-length drill bit for use with any standard three-jaw drill chuck accepting a 9/64 inch straight-cylindrical shank, including handheld drills, drill presses, and manual or CNC machine tools.

Installation Notes

Secure the shank fully into the drill chuck and tighten with a chuck key before operation. Ensure the workpiece is clamped or fixtured to prevent movement during drilling. Use appropriate cutting fluid or coolant when drilling stainless steel, superalloys, or titanium to prolong bit life, noting this bit does not support internal coolant delivery. Inspect the cutting edges for wear or chipping before each use and replace when point geometry is compromised.