Dewalt DW1571 Spade Blade Drill Bit 5/16 Inch Hss

Product Description

The DEWALT DW1571 is a 5/16 inch spade blade drill bit designed for fast, aggressive boring in wood and wood composite materials. Built from high-speed steel with a bright polished finish, this bit delivers clean entry and controlled drilling performance in framing, rough-in, and general construction tasks. The 1/4 inch cylindrical shank seats securely in standard three-jaw drill chucks and quick-change bit holders. At 6 inches overall length, it reaches into wall cavities and framing members without requiring an extension. Electricians, plumbers, and HVAC technicians rely on spade bits for routing wire and pipe paths through wood framing during rough-in work.

This bit is suited for residential and light commercial rough-in applications where fast wood boring is required. Common install scenarios include drilling through wall studs, floor joists, and top and bottom plates to run conduit, flexible duct, refrigerant line sets, or low-voltage wiring. The compact 5/16 inch diameter is well matched to single-conductor wiring runs and small-diameter tubing pass-throughs. The 6 inch OAL allows direct drilling in most standard framing lumber without an extension.

Key Features

• 5/16 inch cutting diameter for single-wire and small tubing pass-through applications
• High-speed steel construction provides durability through repeated use in wood framing
• Bright polished finish reduces surface friction during drilling
• 1/4 inch cylindrical shank fits standard drill chucks and quick-change holders
• 6 inch overall length reaches into framing cavities without an extension

Compatibility

Designed as a standard spade blade drill bit for use with any 3/8 inch or 1/2 inch drill accepting a 1/4 inch cylindrical shank, including corded and cordless models.

Installation Notes

Installation of this bit is performed by electricians, plumbers, and HVAC technicians during rough-in phases. Ensure the drill is powered off and the chuck is secured before inserting or removing the bit. When drilling near electrical panels or existing wiring, follow NEC guidelines and confirm power is de-energized before penetrating wall or floor cavities. Use appropriate eye protection and secure the workpiece before drilling.