Precision Twist Drill 5998084 Wire 65 Drill Bit Hss

Product Description

The PRECISION TWIST DRILL 5998084 is a jobber-length drill bit designed for precision drilling in metal and alloy applications. It carries a wire gauge size of 65, corresponding to a decimal diameter of 0.0350 inches, and is manufactured from high-speed steel with a bright uncoated finish. The 118-degree standard point angle is suited for general-purpose hole-making in steel, cast iron, non-ferrous metals, and superalloys including titanium. The bit features a straight-cylindrical shank and a regular spiral flute configuration, making it compatible with standard drill chucks. Licensed machinists, tool-and-die techs, and HVAC or mechanical trades using small-diameter pilot holes are the primary installers.

This drill bit is intended for drilling small-diameter holes in a range of production and maintenance applications. Primary workpiece materials include steel, cast iron, non-ferrous metals, and superalloys and titanium. The 5/8-inch flute length accommodates a maximum drilling depth of 0.6250 inches, and the 1-1/2-inch overall length fits standard bench-top and hand-held drill chucks. It is part of the R10H-R18H series and conforms to ANSI standards, making it a reliable option for general-purpose shop and field work requiring tight-tolerance small holes.

Key Features

• Wire size 65 with 0.0350-inch decimal diameter for small-diameter precision drilling
• High-speed steel construction for durability across steel, cast iron, and non-ferrous metals
• 118-degree standard point angle with web-thinned, tapered web for consistent starting and reduced thrust
• Regular right-hand spiral flute with 18xD flute-to-diameter ratio for efficient chip evacuation
• Straight-cylindrical shank fits standard drill chucks without adapters
• Conforms to ANSI specification designation for dimensional consistency

Compatibility

Designed as a general-purpose jobber-length drill bit suitable for use in standard drill presses, CNC drilling machines, and hand-held drills accepting a straight-cylindrical shank. Compatible with primary workpiece materials classified under material codes P (steel), K (cast iron), N (non-ferrous metals), and S (superalloys and titanium).

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with small-diameter drill bit handling. Secure the workpiece firmly before drilling to prevent bit deflection or breakage at this diameter. Use appropriate cutting fluid or coolant at the surface when drilling harder materials to extend tool life, noting that this bit does not support through-coolant. Inspect the cutting edges before each use, as small-diameter bits at 0.0350 inches are susceptible to chipping under side load.