Precision Twist Drill 5997612 Jobber Drill Bit 1/8 in

Product Description

The PRECISION TWIST DRILL 5997612 is a jobber-length twist drill bit designed for general-purpose drilling in metal fabrication, maintenance, and trade service applications. Built from high speed steel with a steam oxide coating, it measures 1/8 inch (0.1250 inches) in diameter with a 135-degree split-point tip that reduces walking on entry and lowers feed pressure. The overall length is 2.75 inches, and the spiral flute length runs 1.625 inches, supporting chip evacuation during through-hole drilling. The right-hand cut and tapered web configuration make this bit well suited for production and field use across a wide range of workpiece materials.

This drill bit is intended for use by machinists, pipefitters, electricians, HVAC technicians, and general trade professionals who need a reliable small-diameter bit for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. It fits standard drill chucks and is appropriate for both hand-held and bench-mounted drill presses. The Series R10B designation places it within a heavy-duty jobber-length family built to ANSI and NAS 907 standards, making it a consistent choice for shop and field environments.

Key Features

• 135-degree standard point reduces bit walking and lowers thrust force on hard materials
• Steam oxide coating provides light corrosion resistance and reduces friction during drilling
• Web-thinned, tapered web construction improves chip flow and reduces heat buildup
• Right-hand spiral flute with regular helix efficiently evacuates chips from the cut zone
• Straight-cylindrical shank fits standard 3-jaw drill chucks without adapters
• Meets ANSI and NAS 907 specifications for heavy-duty general-purpose drilling

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with standard drill chucks accepting a 1/8-inch straight shank. Rated for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. Part of the Series R10B-R15B-R18B product family.

Installation Notes

Install into a standard drill chuck and tighten securely before use. Power down or unplug the drill before changing bits. Use appropriate cutting fluid or coolant when drilling hard metals or stainless steel to extend tool life and maintain dimensional accuracy. Follow applicable shop safety standards and wear eye protection during all drilling operations.