Century Drill Tool Co Inc 22321 Hss Drill Bit 21/64 in 3 Pack

Product Description

The CENTURY DRILL TOOL CO INC 22321 is a 21/64 inch brite-finish high speed steel drill bit sold in a 3-pack for general purpose drilling. The brite finish indicates an uncoated HSS construction suited for everyday work in wood, metal, and plastic. The 135-degree split-point tip is self-centering, which eliminates the need for a center punch and allows the bit to start cutting immediately without walking across the workpiece surface. Ground flats on the shank provide a secure grip in both keyed and keyless chucks, reducing slippage under load. Each bit weighs approximately 0.1 pounds and the full package weighs 0.3 pounds.

This drill bit is suited for residential and light commercial trade applications where a reliable, general-purpose bit is needed. Electricians, plumbers, HVAC technicians, and woodworkers routinely use 21/64 inch bits for wire-pass holes, pilot holes for fasteners, and clearance holes in sheet metal or plastic enclosures. The 3-pack quantity keeps a spare on hand during high-volume drilling tasks or when bits are shared across a crew.

Key Features

• 135-degree split-point tip is self-centering — no center punch required
• Premium grade high speed steel construction for durability across multiple materials
• Brite finish for general purpose use in wood, metal, and plastic
• Ground flats on shank for secure chucking in keyed and keyless chucks
• Reduced walking and wandering at the starting surface
• Sold as a 3-pack for extended jobsite use

Compatibility

Designed as a general-purpose 21/64 inch drill bit compatible with standard 3/8 inch and 1/2 inch drill chucks, both keyed and keyless, on corded and cordless drills.

Installation Notes

A licensed or qualified tradesperson should select drill speed appropriate to the material being drilled — lower RPM for metal, higher for wood and plastic. Secure the workpiece before drilling to prevent movement. Inspect the bit for wear or damage before each use and replace any bit showing chipped flutes or a dull tip. Wear appropriate eye protection per applicable jobsite safety standards.