Irwin 1882781 No 6 Wood Countersink Bit 4 Cutter 6 Pack

Product Description

The IRWIN INDUSTRIAL TOOL CO 1882781 is a No. 6 tapered wood countersink drill bit sold in a 6-piece pack. The tapered drill features widened flutes engineered to clear chips quickly and produce fast, clean pilot holes in wood. A 4-cutter adjustable counter bore seats flush or recessed fasteners cleanly and adjusts for controlled pilot hole depth by securing to the flats on the shank via hex screws. The 1/4 inch quick-change shank reduces slipping in standard chucks and is compatible with all 1/4 inch quick-change chuck systems, including impact drivers. Suited for fine woodworking and general wood fastening applications.

This countersink set is designed for woodworkers, finish carpenters, and general contractors who need consistent, repeatable pilot holes for wood screws. The adjustable counter bore allows the installer to dial in pilot hole depth to match the screw length and material thickness, reducing the risk of splitting or over-driving. The widened flute geometry keeps the cut moving even in denser hardwoods, maintaining clean entry and exit around the countersink seat. The 6-piece pack suits job-site use where bit loss or wear is a routine consideration.

Key Features

• No. 6 tapered drill profile sized for standard No. 6 wood screws
• 4-cutter adjustable counter bore for fast, smooth countersinking
• Widened flutes clear chips quickly for cleaner pilot holes
• Counter bore locks to shank flats with hex screws for controlled depth adjustment
• 1/4 inch quick-change shank compatible with standard and impact-rated chuck systems
• Sold as a 6-piece pack for extended job-site use

Compatibility

Compatible with all 1/4 inch quick-change chucks, including impact drills. Sized for No. 6 wood screws in fine woodworking and general wood fastening applications.

Installation Notes

Installation is performed with a standard drill or impact driver equipped with a 1/4 inch quick-change chuck. Before adjusting the counter bore depth collar, ensure the drill is powered off and the bit is stationary. Use the hex screws to lock the counter bore collar at the desired depth before drilling. Always wear appropriate eye protection when operating rotary cutting tools in wood.