Precision Twist Drill 5996993 Wire 38 Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 5996993 is a jobber-length drill bit in wire gauge size 38, equivalent to 0.1015 inches in diameter. Built from high speed steel with a bright uncoated finish, it features a 135-degree split point and a parabolic spiral flute geometry for efficient chip evacuation and reduced walking on entry. The straight cylindrical shank seats securely in standard drill chucks. At 2.5 inches overall length with a 1-7/16-inch flute, this bit is sized for general-purpose drilling tasks in a wide range of materials. It is web-thinned for improved feed force and follows ANSI standards for dimensional accuracy.

This drill bit is suited for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. The QC21P series targets heavy-duty general-purpose applications where consistent hole quality in tough workpiece materials is required. Typical use cases include production drilling, maintenance and repair operations, and fabrication work performed by machinists, pipefitters, electricians, and HVAC or mechanical contractors who need reliable small-diameter drilling in metal stock or structural components.

Key Features

• Wire gauge size 38 — 0.1015-inch diameter for precise small-bore drilling
• 135-degree split point reduces walking and lowers required feed force on entry
• High speed steel construction handles steel, stainless steel, cast iron, and superalloys
• Parabolic spiral flute promotes fast chip removal and reduces heat buildup
• Web-thinned tapered web geometry improves cutting efficiency on hard materials
• ANSI-compliant dimensions ensure compatibility with standard toolholding equipment

Compatibility

Designed as a general-purpose jobber-length replacement drill bit compatible with standard drill chucks accepting a 0.1015-inch straight cylindrical shank.

Installation Notes

Installation is performed by machinists or trade professionals using a standard keyed or keyless drill chuck on a drill press, hand drill, or CNC machine. Secure the shank fully into the chuck before operating and verify runout is within acceptable limits before production use. Use appropriate cutting fluid or coolant when drilling stainless steel, superalloys, or titanium to extend tool life, even though this bit is not designed for coolant-through delivery. Inspect the cutting edges for wear or chipping before each use and replace the bit if edge integrity is compromised.