Irwin IR49914 Wood Auger Bit 7/8 Inch Screw Point

Product Description

The IRWIN IR49914 is a solid-center wood auger bit designed for boring clean, precise holes in wood framing, timber, and dimensional lumber. The 7/8-inch diameter screw point tip pulls the bit into the material for consistent feed control without excessive pressure. With a 7.5-inch overall length and a 4.5-inch twist length, it reaches into deeper stock where shorter bits fall short. The 5/16-inch hex shank seats securely in standard hex-drive chucks and right-angle drills commonly used in framing and rough-in work. The single-spur, wide-land, twist-flute design clears chips efficiently and reduces binding in green or dense wood.

This auger bit suits residential and light commercial framing applications where a reliable, full-length bore is required through studs, joists, plates, and beams. Carpenters, electricians, and plumbers running conduit or pipe through wood framing reach for auger bits like this one when a standard twist drill lacks the length or chip-clearing needed for deep bores. The screw point eliminates the need for a center punch and keeps the bit tracking straight through grain variations.

Key Features

• 7/8-inch diameter solid-center construction maintains bit rigidity through dense or knotty wood
• Screw point tip self-feeds and keeps the bit on target without walking
• 7.5-inch overall length with 4.5-inch twist for deep boring in thick framing members
• 5/16-inch hex shank fits standard hex chuck drivers and right-angle drill attachments
• Single-spur, wide-land twist flute design promotes clean entry and efficient chip ejection
• Sold individually; pouched stock packaging for easy storage and transport

Compatibility

Designed for use with any drill driver or right-angle drill equipped with a 5/16-inch hex chuck. Suited for softwood and hardwood framing, timber boring, and rough-in trade work where a 7/8-inch hole diameter is required.

Installation Notes

Secure the hex shank fully into the chuck before drilling to prevent slippage and bit damage. When boring through dimensional lumber or engineered wood, maintain steady forward pressure and allow the screw point to feed the bit naturally without forcing. Clear chips periodically on deep bores by backing the bit out to prevent binding and overheating. Inspect the spur and cutting edges before each use and replace the bit if chipping or deformation is present.

Technical Specifications

• Diameter: 7/8 inches
• Overall Length: 7.5 inches
• Twist Length: 4.5 inches
• Shank Type: Hex
• Shank Size: 5/16 inches
• Flute Type: Twist
• Point Type: Screw Point
• Spur Configuration: Single Spur
• Land Type: Wide Land
• Center Type: Solid Center
• UPC: 024721100153
• Sold As: Each

Standard Information

• Brand: IRWIN
• Manufacturer Part Number: IR49914