Irwin 1882781 9/64″ #6 Wood Tapered Countersink

Irwin 1882781 9/64″ #6 Wood Tapered Countersink Drill Bit with Adjustable Counterbore

The Irwin 1882781 #6 Wood Tapered Countersink Drill Bit is designed for clean, accurate pilot holes and smooth countersinking in wood applications. Built with a tapered high-speed steel drill bit, it matches the profile of #6 wood screws to help reduce splitting while improving fastener holding strength. The widened flutes clear chips efficiently, allowing faster drilling and cleaner results in softwood, hardwood, plywood, and composite materials commonly used in construction and woodworking projects.

This model includes an adjustable four-cutter counterbore that produces even, smooth countersinks while clearing debris quickly for consistent screw seating. The counterbore attaches securely to the flats on the shank using two hex screws and can be adjusted to control pilot hole depth based on screw length and material thickness. A 1/4-inch quick-change hex shank reduces slipping in standard drill chucks and is fully compatible with all 1/4-inch quick-change systems, including impact drivers. With a compact 4-inch length and durable construction, this countersink is well suited for both shop work and jobsite use where speed, accuracy, and repeatability are required.

Irwin #6 Wood Tapered Countersink At a Glance

• Tapered Drill Bit: Matches #6 wood screw profile to reduce splitting
• Widened Flutes: Clear chips quickly for faster, cleaner drilling
• 4-Cutter Counterbore: Cuts smooth, even countersinks
• Adjustable Counterbore Depth: Allows precise pilot hole control
• Secure Hex Screw Attachment: Counterbore locks firmly onto shank flats
• 1/4″ Quick-Change Shank: Reduces slipping in standard chucks
• Impact Driver Compatible: Works with all 1/4″ quick-change chucks
• High-Speed Steel Construction: Built for durability in wood applications

Markets

• Carpentry and Framing: Suitable for pilot holes and countersinks in wood assemblies
• Cabinet and Furniture Builders: Helps achieve clean, flush fastener installation
• Trim and Finish Installers: Supports consistent countersinking in visible surfaces
• Construction and Renovation Crews: Reliable for repetitive fastening tasks on site
• Maintenance and Facility Teams: Useful for general wood repairs and installations
• Trade Schools and Training Programs: Ideal for teaching correct pilot hole techniques

Professionals working with wood fasteners depend on consistent pilot holes and clean countersinks to maintain strength and appearance, and this tapered countersink bit is built to support that need. The adjustable counterbore allows users to set the correct depth for different screw lengths, helping reduce surface tear-out and rework during installation.

Contractors and installers benefit from the quick-change hex shank, which keeps the bit secure in drills and impact drivers while speeding up bit changes during repetitive tasks. Cabinet makers and trim crews appreciate the smooth countersink finish that allows screws to sit flush or below the surface for a clean final look. Whether used in a workshop or on a jobsite, this countersink provides dependable performance for everyday wood fastening applications.

Irwin 1882781 9/64″ #6 Wood Tapered Countersink Features

• High-Speed Steel Drill Bit: Provides strength and wear resistance for wood drilling
• Tapered Pilot Hole Geometry: Matches screw profile for improved holding power
• Four-Cutter Counterbore: Produces smooth, even countersinks
• Adjustable Counterbore Assembly: Allows precise depth control
• Dual Hex Screw Attachment: Keeps counterbore securely mounted
• Quick-Change Hex Shank: Compatible with standard and impact tools

Irwin 1882781 9/64″ #6 Wood Tapered Countersink Includes

• (1) #6 Tapered Drill Bit
• (1) Adjustable 4-Cutter Counterbore
• (2) Hex Screws for Counterbore Attachment

Irwin 1882781 9/64″ #6 Wood Tapered Countersink Specifications

• Product Number: 1882781
• Screw Size: #6
• Bit Diameter: 9/64 in
• Bit Length: 4 in
• Bit Type: Countersink
• Material: High-Speed Steel
• Shank Size: 1/4 in
• Shank Type: Hex
• For Use On Wood: Yes
• For Use On Metal: No
• Quick Change: Yes
• Package Quantity: (1) Individual Bit

Why Customers Choose the Irwin #6 Wood Tapered Countersink

Installers and woodworkers choose the Irwin 1882781 because it combines pilot drilling and countersinking into one adjustable tool that improves efficiency and consistency. The tapered drill bit supports proper screw fit for #6 fasteners, helping reduce splitting while delivering reliable holding strength. The four-cutter counterbore creates smooth, even recesses so screws sit flush or below the surface, which is critical for cabinetry, trim, and furniture work.

The 1/4-inch quick-change hex shank makes this countersink easy to use with cordless drills and impact drivers, reducing downtime during repetitive fastening tasks. For crews and shops that need dependable results across a range of wood applications, this countersink delivers clean holes, controlled depth, and reliable performance job after job.