Precision Twist Drill 5999247 Jobber Drill Bit 83 Hss

Product Description

The PRECISION TWIST DRILL 5999247 is a wire gauge size 83 jobber-length drill bit ground from high speed steel with a bright, uncoated finish. At 0.0120 inches in diameter and 0.75 inches overall length, it is engineered for precision drilling in tight tolerances where small-diameter holes are required. The 118-degree standard point angle and web-thinned, tapered web construction reduce thrust and improve chip evacuation. Two regular spiral flutes clear material efficiently over a flute length of 0.0938 inches. This bit is a general-purpose tool used by machinists, tool-and-die workers, and field technicians who need reliable small-hole performance across a range of workpiece materials.

The 5999247 is suited for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. Its straight-cylindrical shank at 0.0120 inches diameter fits standard collets and chucks accepting small-diameter tooling. The 8xD flute-to-diameter ratio and maximum drilling depth of 0.0938 inches make it appropriate for shallow, precise holes in production machining, repair work, and fabrication environments where wire-gauge sizing is specified. The Series R10P-R15P-R18P designation identifies it within PRECISION TWIST DRILL jobber-length product families designed to ANSI standards.

Key Features

• Wire gauge size 83 (0.0120 inches) for precision small-diameter drilling applications
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• High speed steel construction rated for steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• Bright uncoated finish suitable for general-purpose use without coolant-through requirement
• Two regular spiral flutes with right-hand cutting direction for conventional drill press and CNC use
• Manufactured to ANSI standards within Series R10P-R15P-R18P

Compatibility

Designed as an OEM-style replacement and general-purpose jobber-length drill bit fitting any standard small-diameter collet or drill chuck that accepts a 0.0120-inch straight-cylindrical shank.

Installation Notes

Machinists and maintenance technicians should secure the straight-cylindrical shank firmly in a calibrated collet or Jacobs-style chuck before operation. Confirm spindle speed is appropriate for the workpiece material and bit diameter per standard speeds-and-feeds references, as small-diameter bits are susceptible to breakage from excessive feed pressure. No coolant-through capability is present; apply cutting fluid externally when drilling harder alloys or stainless steel. Inspect the cutting edges before each use and discard bent or chipped bits to prevent workpiece damage or injury.