Precision Twist Drill 5997982 Drill Bit Wire 40 Hss

Product Description

The PRECISION TWIST DRILL 5997982 is a jobber-length drill bit in wire gauge size 40, corresponding to a decimal diameter of 0.098 inches. Manufactured from high speed steel with a bright uncoated finish, it features a standard 118-degree split-point angle and a regular spiral flute configuration with web thinning for improved chip evacuation and reduced thrust. The straight-cylindrical shank seats in standard three-jaw chucks without slippage. This is a general-purpose drilling tool intended for use by machinists, maintenance technicians, and fabricators working on production or repair operations.

This bit is suited for drilling into steel, cast iron, non-ferrous metals, and superalloys including titanium. The right-hand spiral flute and 14xD flute-to-diameter ratio make it effective in both handheld and bench drill applications. With an overall length of 2.375 inches and a flute length of 1.375 inches, it fits standard drill presses, CNC machines, and portable electric drills commonly used in HVAC, plumbing, electrical, and general mechanical trades. Each unit is sold individually.

Key Features

• Wire gauge size 40 with a decimal diameter of 0.098 inches for precise small-hole drilling
• High speed steel construction provides durability across steel, cast iron, and non-ferrous workpieces
• 118-degree standard point angle for general-purpose material entry
• Web-thinned, tapered web design reduces cutting resistance and heat buildup
• Right-hand cut with regular spiral flute for consistent chip removal
• Bright uncoated finish; ANSI specification compliant

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with standard three-jaw chucks and collet systems accepting a 0.098-inch straight-cylindrical shank. Part of the R10H-R18H series.

Installation Notes

Secure the shank fully into the chuck before operation and verify zero runout before drilling. Use cutting fluid or coolant when drilling steel or titanium alloys to extend tool life and maintain hole tolerance. Reduce feed pressure near drill-through to prevent workpiece burring. Follow applicable shop safety standards and machine guarding requirements during operation.