Cle-line C22691 Jobber Drill Bit No 21 Hss

Product Description

The CLE-LINE C22691 is a wire gauge No. 21 jobber length drill bit designed for general-purpose drilling in metal fabrication and mechanical assembly work. Manufactured from high speed steel with an oxide coating, it carries a 118-degree standard point angle and a web-thinned, tapered web configuration for reduced thrust and cleaner entry. The bit measures 3.25 inches overall length with a 2.125-inch spiral flute and a 0.1590-inch straight-cylindrical shank. With a two-flute right-hand spiral and regular helix, it handles chip evacuation efficiently. Licensed HVAC techs, plumbers, electricians, and general tradespeople rely on bits like this for precision hole-making in metal sheet, structural members, and mechanical components.

The C22691 is suited for drilling aluminum and other non-ferrous and ferrous metals in both residential and light commercial trade applications. Its jobber length geometry fits standard three-jaw drill chucks on corded and cordless drills and drill presses. The 0.1590-inch diameter is frequently used for tapping pilot holes, wire-pull anchor holes, and bracket mounting in panel and conduit work. Sold individually per package with a minimum order of 12 units.

Key Features

• Wire gauge No. 21 diameter at 0.1590 inches for precision pilot and tap work
• 118-degree standard point angle with web-thinned tapered web for reduced entry thrust
• High speed steel construction with oxide coating for wear resistance
• Right-hand cut, two-flute regular spiral for efficient chip evacuation
• Straight-cylindrical shank fits standard drill chucks without adapters
• Conforms to ASME B94.11M and DIN 338 standards

Compatibility

Designed as a general-purpose jobber length drill bit compatible with standard three-jaw chucks on handheld drills and drill presses; primary workpiece material classification covers aluminum, non-ferrous metals, and general steel applications per material codes K, N, and P.

Installation Notes

Installation of this bit requires a standard drill chuck sized to accept a 0.1590-inch straight shank. Secure the shank fully in the chuck before operation and confirm the chuck key is removed before powering the tool. When drilling metal, use appropriate cutting fluid or lubricant to extend bit life and maintain dimensional accuracy. Tradespeople should verify hole diameter requirements against tap drill charts before selecting bit size for threaded applications.