Precision Twist Drill 5999203 Jobber Drill Bit 11 Wire Hss

Product Description

The PRECISION TWIST DRILL 5999203 is a jobber-length drill bit sized to wire gauge number 11, with a decimal diameter of 0.1910 inches. Made from high-speed steel with a bright uncoated finish, it features a standard 118-degree split point and a web-thinned, tapered web construction for improved penetration and reduced thrust on entry. The spiral flute runs at a regular helix and is designed for general-purpose drilling in a wide range of metallic and hard materials. Two flutes provide efficient chip evacuation during operation. This bit is a staple for machinists, millwrights, and HVAC or plumbing fabricators working with steel, stainless, cast iron, and non-ferrous alloys.

The 5999203 is suited for general-purpose production and maintenance drilling in both shop and field settings. Its straight-cylindrical shank seats securely in standard 3-jaw chucks and keyless drill chucks found on drill presses, hand drills, and CNC drilling machines. With a flute length of 2.3125 inches and an overall length of 3.5 inches, it handles material thickness typical in bracket fabrication, conduit work, sheet metal buildup, and light structural applications. The bit performs across steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials per ISO material codes P, M, K, N, and S.

Key Features

• Wire gauge number 11 diameter — 0.1910 inches decimal equivalent
• High-speed steel construction rated for steel, stainless, cast iron, non-ferrous metals, superalloys, and titanium
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• 2-flute regular spiral design for consistent chip evacuation
• Bright uncoated finish suitable for use with or without cutting fluid
• Straight-cylindrical shank fits standard drill chucks — no adapter required
• Meets ANSI standards; Series R18P general-purpose grade

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any 3-jaw or keyless chuck rated to accept a 0.1910-inch straight-cylindrical shank, including drill presses, hand drills, and CNC drilling equipment.

Installation Notes

Installation is performed by machinists, fabricators, and trade professionals using standard drill chuck equipment. Secure the shank fully in the chuck jaws before operation and verify chuck key is removed or keyless chuck is fully tightened before applying power. Cutting fluid or coolant is recommended when drilling stainless steel, superalloys, or titanium to extend tool life, though the bright finish is compatible with dry drilling in mild steel and non-ferrous materials. Do not exceed the manufacturer-rated maximum drilling depth of 2.3125 inches for this bit size.