Irwin 1882783 Countersink Drill Bit, #10 Tapered, 3/16 In. Dia.

This tapered countersink drill bit is engineered for fine woodworking and general wood fastening projects where precision pilot holes and clean countersinking are essential. The #10 tapered design with widened flutes rapidly clears chips while drilling fast, clean pilot holes, reducing the time needed for setup and drilling operations. The adjustable four-cutter counterbore attachment cuts and clears chips for smooth countersinking.

The 1/4 inch quick-change shank reduces slipping in standard chucks and is compatible with all 1/4 inch quick-change chucks, including impact drills. The counterbore attachment secures to the flat surfaces on the shank using two hex screws, allowing you to adjust the depth of the pilot hole for controlled, repeatable results across multiple fastening tasks.

Features and Benefits

• Widened Flutes: Clear chips quickly for fast, clean pilot drilling without binding or clogging.
• Adjustable Four-Cutter Counterbore: Cuts cleanly and clears chips rapidly for efficient countersinking in wood.
• Quick-Change Shank: The 1/4 inch shank fits all standard quick-change chucks, including impact drills, eliminating chuck adjustments between bit changes.
• Hex Screw Attachment: The counterbore locks securely to the shank flats and adjusts for precise, controlled pilot hole depth.
• #10 Tapered Design: Specifically sized for #10 wood fasteners to deliver consistent results in woodworking projects.

Specifications

• Brand: Irwin
• Model: 1882783
• Bit Diameter: 3/16 in.
• Overall Length: 4-1/4 in.
• Counter Bore Size: 7/16 in.
• Plug Size: 7/16 in.
• Shank Size: 1/4 in. quick-change
• Flutes: 4
• Type: Tapered countersink for #10 wood fasteners
• Attachment: Hex screws to shank flats
• Replacement Bit Model: 1882789