Precision Twist Drill 5999100 Jobber Drill Bit Size 52

Product Description

The PRECISION TWIST DRILL 5999100 is a jobber-length twist drill bit sized to wire gauge 52, with a decimal diameter of 0.0635 inches and an overall length of 1.875 inches. It is manufactured from high speed steel with a bright uncoated finish and features a standard 118-degree split point with web thinning for improved penetration and reduced walking on entry. The two-flute, right-hand spiral design moves chips efficiently out of the hole during general-purpose drilling operations. This bit is part of the R18P series and conforms to ANSI standards for consistent dimensional accuracy across production runs.

This drill bit is suited for drilling operations in steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. With a 14xD flute-to-diameter ratio and a maximum drilling depth of 0.875 inches, it fits bench drill presses, handheld electric drills, and CNC drill stations where a straight-cylindrical shank is accepted. Machinists, tool-and-die workers, and maintenance technicians typically reach for this size when drilling small-diameter precision holes in ferrous and non-ferrous workpieces.

Key Features

• Wire gauge 52 diameter: 0.0635 inches decimal equivalent
• High speed steel construction for durability across ferrous and non-ferrous materials
• 118-degree standard point angle with web-thinned, tapered web for cleaner entry
• Right-hand spiral flute with regular helix for efficient chip evacuation
• Bright uncoated finish suitable for general-purpose drilling without additional coating wear considerations
• ANSI-compliant jobber length in the R10P-R15P-R18P series for dimensional consistency

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any drill chuck or collet accepting a straight-cylindrical shank of 0.0635 inches diameter, including bench drill presses, hand drills, and CNC spindles rated for small-diameter tooling.

Installation Notes

Installation is performed by machinists or maintenance technicians using a keyed or keyless chuck rated for the shank diameter. Ensure the chuck jaws are fully tightened and the shank is seated square before initiating the cut. When drilling stainless steel, superalloys, or titanium, apply appropriate cutting fluid to extend tool life and control heat buildup. Do not exceed the recommended maximum drilling depth of 0.875 inches without retracting to clear chips.