Precision Twist Drill 5998221 Jobber Drill Bit Wire 19

Product Description

The PRECISION TWIST DRILL 5998221 is a jobber-length drill bit sized to wire gauge 19 (0.1660 inches decimal), manufactured from high-speed steel with a bright uncoated finish. It features a standard 118-degree split-point angle and a two-flute regular spiral configuration with a tapered web and web-thinned tip for clean entry and reduced thrust. The straight-cylindrical shank measures 0.1660 inches in diameter with a shank length of 1.125 inches. Overall length is 3.25 inches. Flute length extends 2.125 inches, allowing a maximum drilling depth of 2.125 inches. This bit is a general-purpose tool suited for drilling operations across a range of common workpiece materials.

This drill bit is designed for drilling steel, cast iron, non-ferrous metals, superalloys, and titanium in general-purpose trade and production applications. It fits standard drill chucks that accept straight-cylindrical shanks and is well suited for hand drill, drill press, and CNC drilling setups where a wire-gauge 19 hole is required. The R10H-R18H series designation covers a range of jobber-length high-speed steel bits built to ANSI standards, making this bit a reliable option for machinists, pipefitters, electricians, and HVAC technicians who need consistent wire-gauge hole sizing.

Key Features

• Wire gauge 19 sizing at 0.1660 inches decimal for precise hole diameter control
• High-speed steel construction provides durability across steel, cast iron, and non-ferrous materials
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• Two-flute regular spiral design promotes efficient chip evacuation
• Bright uncoated finish compatible with a wide range of cutting fluids
• ANSI-compliant jobber-length geometry for consistent fitment in standard chucks

Compatibility

Designed as a general-purpose jobber-length replacement or stock drill bit for any application requiring a wire gauge 19 straight-cylindrical shank bit built to ANSI specifications.

Installation Notes

Install in a drill chuck that matches the 0.1660-inch straight-cylindrical shank diameter and tighten securely before use. Ensure the workpiece is properly clamped or fixtured before beginning any drilling operation. Apply a suitable cutting fluid when drilling steel, cast iron, or superalloys to extend bit life and maintain hole quality. Inspect the cutting edge and point condition before each use and replace the bit if the tip shows signs of chipping or excessive wear.