Precision Twist Drill 5997544 Jobber Drill Bit 23/64 in

Product Description

The PRECISION TWIST DRILL 5997544 is a jobber-length twist drill bit sized at 23/64 inches (0.3594 inches decimal) with an overall length of 4.875 inches and a flute length of 3.5 inches. Manufactured from high speed steel with a steam oxide coating, it features a standard 118-degree point angle and a tapered web with web thinning for reduced thrust at breakthrough. The straight-cylindrical shank matches the 23/64-inch bit diameter for secure chuck engagement. This is a general-purpose drilling tool suited to production and maintenance environments where consistent hole quality in ferrous and non-ferrous materials is required. Licensed tradespeople and industrial machinists are the primary installers.

This drill bit is designed for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It conforms to NAS 907 and ANSI standards and carries the Series R10A-R15A-R18A designation, indicating it fits within a family of jobber-length HSS drill bits spanning a range of diameters. It is well suited to general-purpose hole-making in fabrication shops, HVAC equipment manufacturing, plumbing fixture drilling, and maintenance-repair-operations settings where a reliable, right-hand spiral-flute bit is needed across varied workpiece materials.

Key Features

• 23/64 inch diameter (0.3594 inches decimal) with matching straight-cylindrical shank for consistent chuck seating
• High speed steel construction with steam oxide coating for corrosion resistance and reduced friction
• 118-degree standard point angle for general-purpose use across steel, cast iron, and non-ferrous metals
• Web-thinned tapered web reduces cutting resistance and improves chip evacuation
• 2-flute regular spiral design with a 10xD flute-to-diameter ratio provides efficient chip clearance
• Meets NAS 907 and ANSI standards; compatible workpiece material codes P, M, K, N, S

Compatibility

Rated for use in steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium workpieces per the manufacturer attribute data. Conforms to NAS 907 specification and ANSI standards. Series R10A-R15A-R18A jobber-length platform.

Installation Notes

Install in a standard three-jaw or keyless drill chuck that accommodates a straight-cylindrical shank of 23/64 inches. Ensure the workpiece is securely clamped before drilling to prevent movement and bit deflection. Use appropriate cutting fluid or coolant when drilling stainless steel, superalloys, or titanium to manage heat buildup and extend bit life. Inspect the cutting edges before each use and replace any bit showing signs of chipping or heel wear.