Precision Twist Drill 5998418 Drill Bit Wire 43 Hss

Product Description

The PRECISION TWIST DRILL 5998418 is a wire gauge size 43 jobber length drill bit ground from high speed steel with a steam oxide coating. The bit measures 2.25 inches overall length with a 1.25-inch spiral flute and a straight cylindrical shank diameter of 0.0890 inches. The 118-degree standard point angle and web-thinned, tapered web geometry reduce thrust and improve chip evacuation during drilling. Two right-hand spiral flutes handle chip removal at a 14xD flute-to-diameter ratio. This bit is suited for general-purpose drilling in a wide range of metallic and hard materials and is installed by machinists, maintenance technicians, and trade professionals.

The 5998418 is designed for drilling operations in steel, stainless steel, cast iron, non-ferrous metal, superalloys, titanium, and other hard materials. Its jobber length profile fits standard drill chucks found on benchtop drill presses, hand drills, and CNC machining centers. The bit conforms to ANSI standards and carries a Series R10-R15-R18 designation, making it appropriate for production and maintenance drilling tasks where consistent hole quality in a decimal size of 0.0890 inches is required.

Key Features

• Wire gauge size 43 (0.0890 inches decimal) with straight cylindrical shank of matching diameter
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• Steam oxide coating improves lubricity and provides light corrosion resistance during storage
• Two right-hand spiral flutes, 1.25 inches long, with regular spiral type for effective chip removal
• General-purpose high speed steel construction rated for steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• ANSI-standard geometry; no coolant-through feature required for general-purpose use

Compatibility

Designed as an OEM-style general-purpose replacement or stock drill bit for standard 3-jaw drill chucks and collet systems accepting a 0.0890-inch straight cylindrical shank.

Installation Notes

Installation is performed by machinists or maintenance technicians using a standard drill chuck or collet. Ensure the chuck is fully tightened and the workpiece is securely fixtured before beginning drilling. Use appropriate cutting fluid or coolant for extended runs in hard materials to preserve cutting edge life. Inspect the point for wear or chipping before each use and replace the bit if the cutting edges are dull.