Precision Twist Drill 5998365 Jobber Drill Bit 15/64 in

Product Description

The PRECISION TWIST DRILL 5998365 is a jobber-length drill bit designed for general-purpose drilling in a wide range of materials. Manufactured from high speed steel with a bright uncoated finish, it measures 15/64 inch (0.2344 inch) in diameter and carries a standard 118-degree point angle. The 2-flute spiral flute design with a tapered web and web-thinned point promotes efficient chip evacuation and reduces thrust during entry. Overall length is 3.875 inches with a flute length of 2.625 inches. Licensed HVAC techs, plumbers, electricians, and general trade professionals reach for this bit when drilling through steel, cast iron, stainless steel, and non-ferrous metals in the field or shop.

This bit is suited for production and maintenance drilling in both residential and light commercial settings. Typical applications include drilling pilot holes, clearance holes, and through-holes in ferrous and non-ferrous metal components. The straight cylindrical shank seats directly into standard drill chucks without additional adapters, making it a straightforward drop-in for most hand drills, drill presses, and magnetic base drills used in trade work.

Key Features

• 15/64 inch (0.2344 inch) diameter with matching straight cylindrical shank diameter of 0.2344 inch
• 118-degree standard point angle for general-purpose entry into ferrous and non-ferrous metals
• High speed steel construction rated for steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• 2-flute regular spiral with tapered web and web thinning for reduced thrust and improved chip flow
• Bright uncoated finish — no coating buildup to obscure wear; suitable for use with cutting fluid
• ANSI standard compliance; Series R10P-R15P-R18P

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard drill chuck accepting a 0.2344 inch straight cylindrical shank. Suitable for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium per manufacturer workpiece material ratings.

Installation Notes

Secure the shank fully in the drill chuck and verify the bit runs true before beginning. Apply appropriate cutting fluid when drilling stainless steel, superalloys, or titanium to extend tool life and manage heat. Allow the bit to reach full speed before contact with the workpiece and withdraw periodically to clear chips on deep holes. Replace the bit if the cutting edges show visible wear or if the tip discolors from heat, as a dull bit increases thrust and can damage both the workpiece and the tool.