Precision Twist Drill 5998214 Jobber Drill Bit 16

Product Description

The PRECISION TWIST DRILL 5998214 is a jobber-length twist drill bit sized at wire gauge 16, with a decimal diameter of 0.1770 inches. Made from high-speed steel with a bright uncoated finish, it features a standard 118-degree split-point geometry and a regular spiral flute configuration. The straight cylindrical shank measures 0.1770 inches in diameter, matching the drill diameter for direct chuck clamping. With an overall length of 3.375 inches and a flute length of 2.1875 inches, this bit delivers a 12xD flute-to-diameter ratio suited to general-purpose drilling across a range of non-ferrous and synthetic materials.

This drill bit is designed for general-purpose production and maintenance drilling in aluminum, magnesium, copper, and synthetic materials. It is commonly used by machinists, electricians, plumbers, HVAC technicians, and general contractors who need a reliable wire-gauge-size drill for conduit, sheet metal, soft alloy, and plastic applications. The two-flute spiral design clears chips efficiently in the non-ferrous and synthetic workpiece materials for which this bit is rated. The bit ships individually and is suited for both bench drill press and handheld drill applications.

Key Features

• Wire gauge size 16 with 0.1770 inch decimal diameter for precise hole sizing
• 118-degree standard point angle with web-thinned, tapered web geometry for easier starting and reduced thrust
• High-speed steel construction provides durability across general-purpose drilling tasks
• Bright uncoated finish suitable for use in aluminum, magnesium, copper, and synthetic materials
• Regular spiral, two-flute design with 2.1875 inch flute length for effective chip evacuation
• Straight cylindrical shank fits standard three-jaw chucks without adaptation
• ANSI-compliant geometry and dimensions, Series R10H/R18H

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard three-jaw drill chucks accepting a 0.1770 inch straight cylindrical shank. Rated for drilling aluminum, magnesium, copper, and synthetic workpiece materials per the manufacturer specification.

Installation Notes

Install into a compatible drill chuck and tighten securely before operation. Ensure the workpiece is clamped or fixtured to prevent movement during drilling. When drilling metals such as aluminum or copper, use an appropriate cutting fluid to extend bit life and improve hole quality. Follow applicable shop safety practices and disconnect or de-energize equipment before drilling into energized assemblies.