Precision Twist Drill 5999150 Jobber Drill Bit 63 Hss

Product Description

The PRECISION TWIST DRILL 5999150 is a wire-gauge jobber length drill bit sized at number 63 (0.0370 inches diameter), manufactured from high speed steel with a steam oxide coating. Designed for general-purpose drilling applications, this bit features a standard 118-degree split point, two-flute spiral geometry with a tapered web configuration, and a web-thinned tip to reduce thrust and improve chip evacuation. The straight cylindrical shank measures 0.0370 inches in diameter, and the overall length is 1.5 inches. Right-hand cut with a regular spiral type, this bit is suited for use with standard drill presses, CNC equipment, and hand-held power tools across metalworking and fabrication environments.

This bit is built for drilling into steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and hard materials. The R18 series designation places it within the precision jobber family suited for tight-tolerance hole work in small-diameter applications. The 5/8-inch flute length supports a maximum drilling depth of 0.625 inches, making it appropriate for thin-stock and sheet metal operations. Machinists, tool and die makers, and general metalworking tradespeople are the primary installers and users of this bit.

Key Features

• Wire gauge size number 63 with a decimal equivalent of 0.0370 inches for precision small-diameter drilling
• 118-degree standard drill point angle with web-thinned tip for reduced entry thrust
• High speed steel construction with steam oxide coating for wear resistance and lubricity
• Right-hand cut, regular spiral, two-flute design for efficient chip removal
• Straight cylindrical shank compatible with standard drill chucks
• ANSI-compliant construction meeting general-purpose jobber length standards

Compatibility

Designed for drilling into steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. Compatible with standard straight-shank drill chucks on drill presses, milling machines, and handheld power tools accepting a 0.0370-inch shank diameter.

Installation Notes

Installation and use should be performed by qualified machinists or metalworking tradespeople following standard shop safety practices. Secure the workpiece firmly before drilling to prevent bit deflection or breakage at this small diameter. Use appropriate cutting fluid or lubricant when drilling steel and stainless steel to prolong bit life and maintain hole quality. Do not exceed the rated maximum drilling depth of 0.625 inches for this flute length.