Irwin IR49916 Power Auger Bit 1 in Hex Shank Wood Boring

Product Description

The IRWIN IR49916 is a 100-1 Power Auger Bit designed for boring clean, accurate holes in wood framing, joists, and structural lumber. It features a screw point tip that pulls the bit into the material for consistent feed rate without excessive downforce. The solid center construction resists flexing under load. At 1 inch in diameter with a 7.5 inch overall length and a 4.5 inch twist length, this bit handles common rough-in boring tasks for plumbing, electrical, and HVAC installations where through-boring of dimensional lumber is required.

The IR49916 is suited for residential and light commercial rough-in work where electricians, plumbers, and HVAC installers need to run conduit, pipe, or duct penetrations through wood framing members. The 5/16 inch hex shank is compatible with standard right-angle drills and heavy-duty drill drivers commonly used in trade applications. The single spur and wide land geometry help produce clean entry and exit holes while reducing tear-out in softwood and hardwood framing stock.

Key Features

• Screw point tip provides self-feeding action for consistent boring without excessive operator pressure
• Solid center construction minimizes flex and deflection during deep boring applications
• 1 inch cutting diameter suits standard rough-in hole sizes for pipe and conduit
• 5/16 inch hex shank fits standard right-angle drills and heavy-duty drill drivers
• Single spur with wide land geometry for clean hole entry and reduced tear-out
• Twist flute design clears chips efficiently during through-boring

Compatibility

Designed as an OEM-style replacement or direct-use auger bit compatible with right-angle drills and drill drivers accepting a 5/16 inch hex shank, suited for wood boring applications in residential and commercial rough-in trade work.

Installation Notes

This bit is installed and operated by electricians, plumbers, and HVAC technicians performing rough-in boring through wood framing. Always ensure the drill or right-angle drive tool is rated for the torque demands of a 1 inch auger bit before use. Inspect framing members for embedded nails, metal fasteners, or knots before boring to prevent bit damage or kickback. Follow applicable NEC, IPC, or IFGC clearance requirements when locating penetration holes relative to framing edges.

Technical Specifications

• Type: 100-1 Power Auger Bit
• Cutting Diameter: 1 inch
• Overall Length: 7.5 inches
• Twist Length: 4.5 inches
• Shank Type: Hex
• Shank Size: 5/16 inch
• Flute Type: Twist
• Point Type: Screw Point
• Center Type: Solid Center
• Spur Configuration: Single Spur
• Land Type: Wide Land
• Sold As: Each
• UPC: 024721100177

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: IR49916