Century Drill Tool Co Inc 22320 Hss Drill Bit 5/16 in 3-pack

Product Description

The CENTURY DRILL TOOL CO INC 22320 is a 5/16-inch brite-finish high speed steel (HSS) drill bit sold in a 3-piece package for general purpose drilling in wood, metal, and plastic. The 135-degree split-point tip is self-centering, eliminating the need for a center punch before drilling. The point penetrates with less applied pressure than standard 118-degree bits and resists walking or wandering on the starting surface. Ground flats machined onto the shank deliver a secure grip in both keyed and keyless chucks, reducing slippage during operation. This bit is suited for trade professionals and knowledgeable DIYers who need a reliable, fast-cutting bit across mixed materials.

The 22320 is appropriate for use in residential and light commercial service work where drilling through multiple material types is routine. Typical applications include electrical rough-in through wood framing, plumbing penetrations through studs and plates, light sheet-metal drilling, and HVAC bracket and duct work where a 5/16-inch hole is required. The 3-piece packaging makes it practical to keep spares on the service truck or in the shop without purchasing in bulk.

Key Features

• Premium grade high speed steel construction for durability across wood, metal, and plastic
• 135-degree quick-cut self-centering split point eliminates the need for a center punch
• Resists walking and wandering on smooth or curved starting surfaces
• Ground flats on shank provide secure chucking in both keyed and keyless drill chucks
• Brite finish suitable for general purpose drilling applications
• 3-piece pack provides on-hand redundancy for field and shop use

Compatibility

Designed for use with standard 3/8-inch or 1/2-inch keyed and keyless drill chucks for general purpose drilling in wood, metal, and plastic materials.

Installation Notes

Installation is performed by electricians, plumbers, HVAC technicians, and other trades requiring material penetrations during rough-in or service work. Secure the bit firmly in the chuck before operation and verify the workpiece is clamped or otherwise stabilized. Use appropriate cutting speed for the material being drilled — slower speeds are recommended for metal to prevent overheating the bit. Wear appropriate eye protection per standard job-site safety practices.