Diablo Auger Drill Bit DAG3020 7/16 Inch Wood Boring Tool (17-1/2 Inch Total Length 1/4 Hex Shank Dura-Tip Dual Edge Nail-Embedded Clean Holes)

Diablo DAG3020 7/16" x 17-1/2" Dura-Tip Self-Feed Nail-Embedded Wood Auger Drill Bit

The Diablo DAG3020 7/16-inch extended-length wood auger drill bit drills deep pilot runs through stacked structural plates, bores wiring pathways across multi-stud cavities, penetrates thick timber joists, and cuts through nail-embedded lumber without binding. Measuring 17-1/2 inches in overall length with a 13-1/2-inch usable drilling depth and an impact-rated 1/4-inch quick-change power hex shank, this high-speed steel boring accessory features a threaded Dura-Tip self-feeding screw point and dual precision-milled cutting spurs to slice directly through hidden fasteners. Outfitted with a progressive two-step cutting geometry that lowers rotational torque to maximize cordless tool battery runtime, high-volume deep flutes for continuous chip evacuation from deep holes, and precision Swiss engineering, it provides residential electricians, utility installers, and framing contractors with fast, burr-free boring performance through heavy structural timber assemblies.

Best Used For:

• Deep Wall Cavity and Multi-Stud Utility Routing: Boring 7/16-inch clean diameter holes through stacked top plates, multi-ply wall studs, and floor joists for communication cables, thermostat lines, and single Romex wiring.
• Heavy Timber and Post Fastener Pilot Holes: Drilling extended 13-1/2-inch deep pilot channels in multi-ply structural timbers and landscape posts for 1/2-inch lag hardware and carriage bolts.
• Nail-Embedded Remodeling and Demolition Framing: Penetrating old-growth lumber, heavy headers, and subfloor framing assemblies containing embedded steel framing nails without tip chipping.

Key Performance & Safety Features

• Self-Feeding Dura-Tip™ Point: Threaded lead screw draws the bit effortlessly through dry and green timber, eliminating manual feed strain while penetrating embedded framing nails.
• Dual Precision Cutting Edges: Twin outer scoring spurs slice clean hole perimeters before chip removal to prevent wood splintering and exit blowout.
• Two-Step Cutting Geometry: Progressive cutting profile reduces rotational torque resistance, significantly lowering battery drain on cordless drills and impact wrenches.
• Extended 13-1/2-Inch Deep Flutes: High-capacity polished spiral flutes quickly eject wood shavings out of deep cavities to eliminate clogging and reduce friction heat.
• 1/4-Inch Quick-Change Hex Shank: Impact-rated power shank prevents chuck slippage and locks securely into 1/4" impact drivers, drill chucks, and quick-release bit holders.
• High-Speed Steel Metallurgy: Premium heat-treated steel core withstands heavy torsional impact forces from compact cordless power tools.

What's Included

• (1) Diablo DAG3020 7/16" Diameter x 17-1/2" Length Nail-Embedded Wood Auger Drill Bit

Technical Specifications

Pro-Tip: When boring deep holes through multiple stacked joists or thick landscape posts with a 1/4-inch impact driver, back the bit out halfway through the cut while running at medium speed; this quick stroke clears packed chips along the 13-1/2-inch flutes and prevents motor stall deep inside the timber.