Precision Twist Drill 5999155 Jobber Drill Bit Wire 49

Product Description

The PRECISION TWIST DRILL 5999155 is a jobber-length twist drill bit sized to wire gauge 49, equivalent to 0.0730 inches in diameter. Built from high speed steel with a steam oxide coating, it is designed for general-purpose drilling in metalworking applications. The bit features a standard 118-degree split point, a regular spiral flute pattern, and a straight-cylindrical shank. Overall length is 2 inches with a 1-inch flute length. Licensed trade professionals and machining technicians rely on this bit for precision hole-making in a wide range of ferrous and non-ferrous materials.

This drill bit is suited for light-duty drilling operations in job shop, maintenance, and production environments. It performs across multiple workpiece material categories including steel, stainless steel, cast iron, non-ferrous metal, superalloys, titanium, and other hard materials. The 2-flute spiral design promotes chip evacuation during drilling. It is a Series R18 bit conforming to ANSI standards, and is packaged individually for bench or field use.

Key Features

• Wire size 49 — 0.0730-inch decimal diameter for precise small-hole drilling
• High speed steel construction with steam oxide coating for corrosion resistance and reduced friction
• 118-degree standard point angle for general-purpose entry into metal stock
• Web-thinned, tapered web configuration reduces thrust force at the tip
• Regular spiral flute with 14xD flute-to-diameter ratio aids chip clearance
• Straight-cylindrical shank fits standard drill chucks without modification

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with standard drill chucks accepting a 0.0730-inch straight shank, suitable for use in hand drills, drill presses, and CNC machines across metalworking applications.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with drilling equipment and cutting tool safety. Secure the workpiece and verify chuck tightness before operation. Do not exceed the rated maximum drilling depth of 1 inch per pass without retracting to clear chips. Use appropriate cutting fluid when drilling stainless steel, superalloys, or titanium to prolong tool life and maintain dimensional accuracy.