Irwin Industrial Tool Co 49913 Solid Center Auger Bit

Product Description

The IRWIN INDUSTRIAL TOOL CO 49913 is a solid center auger bit designed for boring clean, accurate holes in wood. Built on the I-100 platform, it features a 13/16-inch diameter, a 4.5-inch twist length, and a 7.5-inch overall length. The solid center construction adds rigidity through the full bore stroke, reducing deflection under load. Full-length heat treatment strengthens the twist along its entire shaft, guarding against bending in heavy-duty applications. Licensed electricians, rough-in carpenters, and plumbers use this bit when drilling through framing and joists for wire or pipe runs.

This auger bit is suited for residential and light commercial framing work where consistent hole diameter and straight boring paths are required. The coarse screw point pulls the bit into both hard and soft wood without requiring excessive feed pressure. Wide lands keep the bit tracking straight through the full depth of the cut, and the flutes are ground behind the lands to channel chips inward and away from the outside diameter. This chip management keeps the cut path clear and reduces heat buildup during extended boring. The single spur cutting edge scribes the hole circumference before the main cutters engage, producing a cleaner entry and exit.

Key Features

• Solid center construction provides extra rigidity and reduces bit flex during boring
• Full-length heat-treated shaft resists bending under heavy-duty load
• Wide lands keep the bit aligned straight through the full depth of the hole
• Flutes ground behind the lands funnel chips away from the outside diameter for faster, cleaner cuts
• Single spur cutting edge scribes the hole circumference for a smoother finish
• Coarse screw point self-feeds in both hard and soft wood

Compatibility

Designed for use in standard brace-style or electric drill applications requiring a 13/16-inch auger bit for boring through hard and soft wood framing, joists, and similar structural lumber.

Installation Notes

This bit is installed by trade professionals including electricians, plumbers, and carpenters performing rough-in drilling through wood framing. Secure the workpiece before boring and ensure the drill or brace is properly aligned before engaging the screw point. Clear chips from the hole periodically during deep bores to prevent binding. Do not use on masonry, metal, or composite materials not rated for auger bit use.