Diablo Auger Drill Bit DAG1160 1-3/8 Inch Wood Boring Tool (7-1/2 Inch Total Length 7/16 Hex Shank Dura-Tip Dual Edge Nail-Embedded Clean Holes)

Diablo DAG1160 1-3/8" x 7-1/2" Dura-Tip Self-Feed Nail-Embedded Wood Auger Drill Bit

The Diablo DAG1160 1-3/8-inch wood auger drill bit bores large-diameter utility pathways through structural timber studs, penetrates multi-ply joists for commercial plumbing and electrical conduits, drills heavy framing plates, and cuts through nail-embedded lumber without binding. Measuring 7-1/2 inches in overall length with a 5-1/2-inch usable drilling depth and an impact-rated 7/16-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 two-step cutting geometry that reduces rotational friction to maximize cordless tool battery runtime, high-volume deep flutes for rapid chip ejection, and precision Swiss craftsmanship, it provides residential electricians, plumbers, and framing contractors with clean, burr-free boring performance across demanding timber structures.

Best Used For:

• Plumbing Supply Line and Waste Rough-In: Boring 1-3/8-inch clean diameter holes through wall studs, floor joists, and double top plates to run 1-inch PEX, copper piping, and PVC conduits.
• Electrical Service Routing and Cable Passages: Drilling precise, chatter-free channels in multi-ply timber headers and structural beams for heavy wire bundles and protective conduit.
• Nail-Embedded Remodeling and Demolition Framing: Penetrating old-growth lumber, reclaimed structural beams, and subfloor assemblies containing embedded steel framing nails without tip fracture.

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.
• Deep Chip Evacuation Flutes: Wide polished flutes quickly eject wood shavings out of deep holes 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 DAG1160 1-3/8" Diameter x 7-1/2" Length Nail-Embedded Wood Auger Drill Bit

Technical Specifications

Pro-Tip: When boring 1-3/8-inch holes through dense structural framing with a high-torque right-angle drill, keep the tool perpendicular and let the Dura-Tip lead screw draw the bit naturally at moderate RPM; this technique ensures clean chip evacuation and prevents motor stalling.