Precision Twist Drill 5999137 Jobber Drill Bit 60 Hss

Product Description

The PRECISION TWIST DRILL 5999137 is a wire gauge size 60 jobber length drill bit ground from high speed steel and finished with a bright uncoated surface. The 118-degree standard point angle makes it well suited for general-purpose drilling in a wide range of materials. The bit measures 1.625 inches overall with an 11/16-inch spiral flute and a straight-cylindrical shank. A two-flute, right-hand spiral design with a tapered web and web-thinned point reduces cutting resistance and helps clear chips efficiently. The series designation is R10P-R15P-R18P, and the bit meets ANSI standards.

This bit is intended for production and maintenance drilling in steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. The 0.0400-inch decimal diameter targets small-hole work common in precision sheet metal fabrication, electronics enclosures, instrument panels, and toolroom operations. The 17xD flute-to-diameter ratio provides adequate flute length relative to the drill diameter for these fine-size applications. It is sold individually and ordered in multiples of 12, making it appropriate for shop stocking or production line replenishment.

Key Features

• Wire gauge size 60 (0.0400 inch decimal diameter) for precision small-hole drilling
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust
• High speed steel construction handles steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• Right-hand, regular spiral, two-flute design promotes chip evacuation
• Bright uncoated finish — compatible with cutting fluids for extended tool life
• Meets ANSI standards; Series R10P-R15P-R18P

Compatibility

Designed as a general-purpose jobber length drill bit suitable for use in standard drill presses, CNC machining centers, and handheld drill motors accepting straight-cylindrical shanks at 0.0400-inch diameter.

Installation Notes

This bit is installed and serviced by machinists, tool-and-die makers, and maintenance technicians. Secure the straight-cylindrical shank firmly in the chuck and verify concentricity before starting the spindle. Use a cutting fluid or coolant appropriate for the workpiece material to extend bit life and prevent work hardening, particularly when drilling stainless steel or superalloys. Inspect the point for wear or chipping after extended runs on hard materials, as small-diameter bits are susceptible to breakage if feed pressure is excessive.