Precision Twist Drill 5999331 Wire 22 Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 5999331 is a wire gauge size 22 high-speed steel jobber-length drill bit designed for general-purpose drilling in metal fabrication and maintenance applications. It features a 118-degree standard point angle with web thinning for improved centering and reduced thrust, a steam oxide coating for basic lubrication and corrosion resistance, and a two-flute regular spiral design that efficiently evacuates chips. At 3.125 inches overall length with a 2-inch flute length, this bit fits standard drill chucks and is sized for use in bench drills, hand drills, and drill presses used in production and field work. Licensed tradespeople and machinists use this bit for everyday ferrous metal drilling tasks.

This bit is suited for drilling steel and cast iron in residential, commercial, and light industrial settings. The straight cylindrical shank accepts standard three-jaw drill chucks without modification. Its wire gauge sizing makes it a common choice for clearance holes, tap drilling, and precision layout work where fractional sizes do not provide sufficient resolution. The 0.1570-inch decimal diameter corresponds to wire size 22 for straightforward cross-referencing on the shop floor or in the field.

Key Features

• Wire size 22 diameter — 0.1570 inches decimal equivalent for precise hole sizing
• 118-degree standard point with web thinning for improved centering on steel and cast iron
• High-speed steel construction rated for general-purpose ferrous metal drilling
• Steam oxide coating provides baseline lubrication and corrosion resistance
• Two-flute regular spiral geometry promotes efficient chip evacuation
• Straight cylindrical shank fits standard drill chucks without adapters
• Meets ANSI and NAS 907 standards for jobber-length drill geometry

Compatibility

Designed as a general-purpose jobber-length drill bit in the PRECISION TWIST DRILL Series R10A-R15A-R18A, compatible with standard three-jaw drill chucks accepting a 0.1570-inch straight shank. Primary workpiece materials include steel and cast iron.

Installation Notes

Installation is performed by machinists, maintenance technicians, or qualified tradespeople using a drill press, hand drill, or CNC machine with a compatible chuck. Secure the workpiece firmly before drilling and confirm the chuck is fully tightened on the straight shank to prevent slippage. Use appropriate cutting fluid for extended runs in steel to preserve cutting edge life. Inspect the bit for chipping or wear before each use and replace when the point shows signs of dulling to maintain hole accuracy.