Precision Twist Drill 5999126 Jobber Drill Bit No.3 Hss

Product Description

The PRECISION TWIST DRILL 5999126 is a jobber-length drill bit in wire gauge size No. 3 (0.2130 inches decimal), ground from high speed steel with a steam oxide coating. It features a 135-degree split-point angle for reduced walking on entry, a two-flute spiral design with regular helix, and a web-thinned, tapered web for lower thrust requirements. Overall length is 3.75 inches with a 2.5-inch flute length. The straight-cylindrical shank measures 0.2130 inches in diameter. This is a general-purpose, heavy-duty grade bit suited for production and maintenance drilling in metal fabrication, HVAC, plumbing, and industrial service work.

This bit is designed for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. It is a practical choice for trade professionals who need consistent, accurate holes in ferrous and hard materials across residential and commercial jobsite applications. Maximum drilling depth is 2.5 inches. The single-piece design and steam oxide finish provide corrosion resistance and improved chip evacuation in standard drilling operations. Meets ANSI standards and NAS 907 specification designation.

Key Features

• Wire gauge No. 3 size, 0.2130 inches decimal diameter for precise hole sizing
• 135-degree split-point reduces bit walking and lowers entry force on hard materials
• Steam oxide coating improves corrosion resistance and chip flow
• Web-thinned, tapered web reduces axial thrust during drilling
• Two-flute regular spiral design suits a wide range of metallic workpiece materials
• Meets ANSI standards and NAS 907 specification for heavy-duty general-purpose drilling

Compatibility

Designed for use in standard 3-jaw drill chucks accepting a straight-cylindrical shank of 0.2130 inches. Suitable for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. Part of the R10B, R15B, and R18B series from PRECISION TWIST DRILL.

Installation Notes

Installation is performed by machinists, tool-and-die workers, or trade professionals using a drill press, hand drill, or similar power equipment. Always secure the workpiece before drilling and ensure the chuck is properly tightened on the shank. Power down and de-energize all equipment before changing bits. Use appropriate cutting fluid or coolant when drilling hard or stainless materials to extend bit life and maintain hole quality.