Diablo Auger Drill Bit DAG3040 9/16 Inch Wood Boring Tool (17-1/2 Inch Total Length 7/16 Hex Shank Dura-Tip Dual Edge Nail-Embedded Deep Holes)

Diablo DAG3040 9/16" x 17-1/2" Dura-Tip Self-Feed Nail-Embedded Wood Auger Drill Bit

The Diablo DAG3040 9/16-inch extended-length wood auger drill bit bores deep branch wiring channels through stacked structural plates, drills long pass-through runs for electrical cabling across multi-stud wall 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 7/16-inch quick-change power hex shank, this high-speed steel boring accessory incorporates 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, extra-deep spiral flutes for continuous chip evacuation from deep holes, and precision Swiss craftsmanship, 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 9/16-inch clean diameter holes through stacked top plates, multi-ply wall studs, and floor joists for 12/2 and 14/2 Romex branch cables and low-voltage wiring.
• Heavy Post and Timber Fastener Pilot Holes: Drilling extended 13-1/2-inch deep channels in multi-ply structural timbers and landscape posts for 1/2-inch lag screws, carriage bolts, and all-thread rods.
• 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.
• 7/16-Inch Quick-Change Hex Shank: Heavy-duty power hex shank provides non-slip chuck grip and locks securely into 7/16" quick-change adapters, drill chucks, and high-torque impact tools.
• High-Speed Steel Metallurgy: Premium heat-treated steel core withstands heavy torsional impact forces from compact cordless power tools.

What's Included

• (1) Diablo DAG3040 9/16" Diameter x 17-1/2" Length Nail-Embedded Wood Auger Drill Bit

Technical Specifications

Pro-Tip: When boring deep 9/16-inch holes through stacked joists or heavy landscape timbers, back the bit out halfway through the cut while running at medium speed; this quick clearing stroke evacuates high-volume chips along the 13-1/2-inch flutes and prevents friction binding deep inside the wood.