Irwin Industrial Tool Co 49909 Solid Center Auger Bit 9/16 in

Product Description

The IRWIN INDUSTRIAL TOOL CO 49909 is a 9/16-inch solid center auger bit engineered for boring clean, accurate holes in wood. The solid center design provides extra rigidity during the bore, reducing deflection and bit wander in demanding applications. At 7-1/2 inches overall length with a 4-1/2-inch twist length, this bit is sized for standard through-hole and deep-bore tasks in both hard and soft wood. Full-length heat treatment strengthens the twist along its entire length, guarding against bending under heavy-duty load. Electricians, carpenters, plumbers, and general contractors reach for this bit when drilling through framing, joists, and studs.

The 49909 is suited for residential and light commercial construction and renovation work. Typical applications include drilling through wood framing for wire or pipe runs, boring holes in joists for mechanical trades, and general carpentry. The coarse screw point pulls the bit forward quickly in both hard and soft woods, reducing user effort and drill torque demand. Wide lands keep the bit tracking straight through the hole, and flutes ground behind the lands channel chips inward and away from the outside diameter for a faster, cleaner cut with less binding.

Key Features

• Solid center construction delivers extra rigidity and reduces bit deflection while boring
• Full-length heat-treated steel resists bending under heavy-duty load and strengthens the twist at high-strain points
• Wide lands keep the bit tracking straight through the full depth of the bore
• Flutes ground behind the lands funnel chips inward and away from the outside diameter for a cleaner cut
• Single spur cutting edge scribes the hole circumference for a smoother finish
• Coarse screw point provides fast self-feeding action in hard and soft woods

Compatibility

Designed as a standard solid center auger bit for use with brace-style hand tools and compatible power drill chucks accepting hex or tapered square shanks in wood boring applications.

Installation Notes

This bit is installed and used by electricians, plumbers, and carpenters drilling through wood framing and structural members. Secure the workpiece before boring and confirm the drill or brace is rated for the bit shank style. When boring through load-bearing members, consult applicable building codes before removing material. Remove the bit from the hole periodically on deep bores to clear chips and prevent binding.