Precision Twist Drill 5998000 Jobber Drill Bit No. 46

Product Description

The PRECISION TWIST DRILL 5998000 is a jobber-length drill bit sized at wire gauge No. 46 (0.0810 inches decimal equivalent), designed for general-purpose drilling in a wide range of materials. Manufactured from high speed steel with a bright uncoated finish, the bit features a standard 118-degree split-point angle and a regular spiral flute pattern with web thinning for improved chip evacuation and reduced thrust. With an overall length of 2.125 inches and a flute length of 1.125 inches, this bit is suited for drilling operations where reach and rigidity are balanced. It is installed and used by machinists, maintenance technicians, and trade professionals working with ferrous and non-ferrous base materials.

This bit is appropriate for drilling steel, cast iron, non-ferrous metals, superalloys, and titanium in production and maintenance applications. The straight cylindrical shank fits standard drill chucks without modification. The 14xD flute-to-diameter ratio and tapered web configuration make it well suited for general-purpose hole making in both manual and machine-fed drilling setups. It conforms to ANSI standards and falls within the R10H-R18H series, which covers the 0.0500 to 0.1000 inch decimal size range.

Key Features

• Wire gauge No. 46 size — 0.0810 inches decimal equivalent
• High speed steel construction for durability across ferrous and non-ferrous materials
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• Regular spiral flute with right-hand cut for conventional drilling setups
• Straight cylindrical shank fits standard drill chucks directly
• ANSI-conforming jobber length — 2.125 inches OAL with 1.125 inches of flute length

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard drill chuck accepting a 0.0810-inch straight cylindrical shank. Suitable for use in drill presses, CNC machining centers, and hand-held power drills. Part of the PRECISION TWIST DRILL R10H-R18H series.

Installation Notes

Insert the straight cylindrical shank fully into the drill chuck and tighten securely before operation. Ensure the drilling machine is powered off and fully stopped before changing or inspecting bits. Apply appropriate cutting fluid or coolant when drilling hardened steels, superalloys, or titanium to extend bit life — this bit does not support through-coolant. Inspect the cutting edges for wear or chipping before each use and replace if the point shows signs of degradation.