Irwin 1882784 7/32″ #12 Wood Tapered Countersink

Irwin 1882784 7/32″ #12 Wood Tapered Countersink Drill Bit with Adjustable Counterbore

The Irwin 1882784 #12 Wood Tapered Countersink Drill Bit is designed for drilling clean pilot holes and producing smooth, controlled countersinks when working with larger wood screws. The tapered drill profile matches #12 wood screws, helping reduce splitting while allowing the fastener threads to seat properly for strong holding power. Widened flutes move chips out of the hole efficiently, keeping drilling fast and clean in softwood, hardwood, plywood, and other common wood materials used in construction and woodworking.

This bit includes an adjustable four-cutter counterbore that cuts evenly and clears material quickly to produce smooth countersinks for flush or recessed screw heads. The counterbore mounts 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 helps reduce slipping in standard drill chucks and is compatible with all 1/4-inch quick-change systems, including impact drivers. With a compact 4-inch length and durable high-carbon steel construction, this countersink is well suited for demanding shop work and jobsite fastening tasks.

Irwin #12 Wood Tapered Countersink At a Glance

• Tapered Drill Bit: Matches #12 wood screw taper to reduce splitting
• Widened Flutes: Clear chips quickly for fast, clean pilot holes
• 4-Cutter Counterbore: Cuts smooth, even countersinks
• Adjustable Depth Control: Sets pilot hole depth for different screw lengths
• Secure Counterbore Attachment: Mounts to shank flats with hex screws
• 1/4″ Quick-Change Shank: Reduces slipping in standard chucks
• Impact Driver Compatible: Works with all 1/4″ quick-change chucks
• High-Carbon Steel Construction: Built for strength and durability in wood

Markets

• Carpentry and Framing: Used for pilot holes and countersinks with large wood fasteners
• Deck Building and Exterior Construction: Supports clean screw seating in structural lumber
• Cabinet and Furniture Manufacturing: Helps maintain consistent fastener depth
• Construction and Remodeling Crews: Reliable for repetitive fastening tasks on site
• Maintenance and Facility Operations: Useful for repairs requiring #12 wood screws
• Trade Schools and Training Programs: Ideal for teaching correct pilot drilling techniques

Working with larger wood screws requires accurate pilot holes and controlled countersinks to prevent splitting and surface damage. This tapered countersink combines both operations into one adjustable tool, helping crews work efficiently while maintaining consistent results. The four-cutter counterbore produces smooth recesses so screw heads sit flush or slightly below the surface, reducing finishing time and improving overall appearance.

Contractors and installers benefit from the 1/4-inch quick-change hex shank, which keeps the bit secure in drills and impact drivers while speeding up tool changes during repetitive work. Deck builders, framers, and maintenance teams appreciate the chip-clearing flutes that keep drilling efficient in thicker materials. Whether used in a workshop or on a jobsite, this countersink delivers dependable performance for demanding wood fastening applications.

Irwin 1882784 7/32″ #12 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 1882784 7/32″ #12 Wood Tapered Countersink Includes

• (1) #12 Tapered Drill Bit
• (1) Adjustable 4-Cutter Counterbore
• (2) Hex Screws for Counterbore Attachment

Irwin 1882784 7/32″ #12 Wood Tapered Countersink Specifications

• Product Number: 1882784
• Screw Size: #12
• Bit Diameter: 7/32 in
• Bit Length: 4 in
• Bit Type: Countersink
• Material: High-Carbon 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 #12 Wood Tapered Countersink

Professionals choose the Irwin 1882784 when working with #12 wood screws because it delivers consistent pilot holes and smooth countersinks in one adjustable setup. The tapered drill bit helps reduce splitting while allowing fasteners to seat properly, which is important for decking, framing, and other structural wood applications. The four-cutter counterbore produces clean recesses so screws sit flush or below the surface, reducing finishing work and rework.

The 1/4-inch quick-change hex shank allows fast, secure use with cordless drills and impact drivers, making it practical for repetitive fastening on the jobsite. For crews and workshops that need accuracy, control, and reliable performance with larger wood fasteners, this countersink is a dependable choice.