Precision Twist Drill 5998752 Jobber Drill Bit 43/64 in

Product Description

The PRECISION TWIST DRILL 5998752 is a jobber-length drill bit designed for general-purpose drilling in a wide range of materials. It measures 43/64 inches (0.6719 inches) in diameter with a 7-5/8 inches overall length and features a 118-degree standard point angle. The bit is manufactured from high speed steel with a steam oxide coating that reduces friction and helps resist heat buildup during drilling. A two-flute spiral design with a regular spiral type and web-thinned, tapered web configuration promotes efficient chip evacuation and improved point entry. This bit is part of the Series R10-R15-R18 line and conforms to ANSI standards. It is suited for installation by machinists, maintenance technicians, and trade professionals working in metalworking and fabrication environments.

This drill bit is intended for use on steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It performs well in general-purpose production and maintenance drilling applications where a standard jobber-length tool is appropriate. The straight-cylindrical shank accepts standard three-jaw chucks on drill presses, handheld power drills, and magnetic base drills. Maximum drilling depth reaches 5-5/8 inches, making it suitable for through-hole and blind-hole operations across a broad range of workpiece thicknesses in shop and field settings.

Key Features

• 43/64 inch (0.6719 inches) diameter high speed steel construction for durability in metalworking applications
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust and cleaner entry
• Steam oxide coating reduces friction and provides moderate heat and corrosion resistance
• Two-flute regular spiral design promotes efficient chip removal during drilling
• Straight-cylindrical shank compatible with standard three-jaw chucks
• ANSI-compliant jobber-length geometry for consistent, repeatable performance

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with standard three-jaw drill chucks. Rated for use on steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium workpieces per manufacturer specifications.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with rotary cutting tools. Ensure the drill press, handheld drill, or magnetic base drill is fully powered down and secured before inserting or removing the bit from the chuck. Inspect the cutting edges for wear or chipping before each use, as a damaged bit can deflect or fracture under load. Coolant-through is not supported on this bit, so external coolant or cutting fluid should be applied manually when drilling harder alloys or when heat buildup is a concern.