Irwin Industrial Tool Co 49906 Solid Center Auger Bit

Product Description

The IRWIN INDUSTRIAL TOOL CO 49906 is a 3/8 inch solid center auger bit engineered for wood boring applications where accuracy and durability are required. The solid center construction provides extra rigidity during the bore, reducing deflection in demanding conditions. At 7-1/2 inches overall length with a 4-1/2 inch twist length, this bit is suited for through-hole and deep boring tasks. Full-length heat treatment strengthens the twist along its entire length, guarding against bending under heavy loads. A coarse screw point pulls the bit forward quickly in both hard and soft wood species without requiring excessive feed pressure.

This auger bit is used in residential and light commercial wood-frame construction, rough carpentry, and electrical or plumbing rough-in work where 3/8 inch bored holes are required through lumber, dimensional framing, or engineered wood. Electricians and plumbers commonly use solid center auger bits like the 49906 when drilling through joists, studs, and plates. The bit comes pouched and is sold in a package quantity of six units, making it practical for stocking a service van or tool crib.

Key Features

• Solid center design provides extra rigidity and reduces flex while boring
• Wide lands keep the bit tracking straight through the full depth of the hole
• Flutes are ground behind the lands to channel chips inward and away from the outside diameter, producing a faster and cleaner cut
• Single spur cutting edge scribes the hole circumference for a smoother finish
• Coarse screw point for fast self-feeding action in hard and soft woods
• Full-length heat-treated construction resists bending at high-strain sections of the twist

Compatibility

Designed as a standard 3/8 inch solid center auger bit for use with hand braces and compatible low-speed power boring setups in wood framing and carpentry applications.

Installation Notes

Installation of this bit is performed by electricians, plumbers, and carpenters during rough-in phases of construction. Ensure the bit shank is fully seated and secured in the chuck before beginning the bore. Keep feed pressure steady and allow the screw point to self-feed rather than forcing the bit. Follow applicable NEC or IPC bored-hole spacing requirements when drilling through structural framing members.