Irwin Industrial Tool Co 1966933 Forstner Bit 1-3/8 Inch

Product Description

The IRWIN INDUSTRIAL TOOL CO 1966933 is a 1-3/8 inch Forstner bit designed for precision wood boring applications. The brad point tip starts the cut cleanly, even on uneven or angled surfaces, making it well suited for furniture work, cabinetry, hinge mortising, and general carpentry. The bit features a reduced shank with a 0.375 inch round shank that fits 3/8 inch and larger drill chucks. Overall length is 3.5 inches. Woodworkers, carpenters, and finish tradespeople rely on this bit where clean, flat-bottomed holes are required and a standard twist bit would not perform adequately.

This Forstner bit is intended for use in wood and wood composite materials in residential and light commercial construction and finish carpentry. Typical applications include boring flat-bottomed holes for shelf pin sockets, concealed hinges, dowel joints, and partial-depth recesses. The reduced shank design allows the bit to be used in standard 3/8 inch keyed or keyless drill chucks without requiring a dedicated large-chuck tool. Package quantity is 2 bits per unit.

Key Features

• 1-3/8 inch cutting diameter for flat-bottomed wood boring
• Brad point tip starts cleanly on curved, angled, or uneven surfaces
• Bores precision holes at any angle relative to the workpiece surface
• Reduced shank — 0.375 inch round shank fits 3/8 inch and larger drill chucks
• 3.5 inch overall length provides reach for typical depth applications
• Sold as a 2-piece package

Compatibility

Designed for use with 3/8 inch and larger drill chucks in corded or cordless drills and drill presses. Compatible with standard keyed and keyless chuck configurations.

Installation Notes

This bit is installed and operated by carpenters, woodworkers, and finish tradespeople using hand-held drills or drill presses. Secure the workpiece firmly before boring to prevent movement during the cut. Use a backing board beneath the workpiece when boring through material to minimize tear-out on the exit face. Inspect the brad point and cutting edges before each use and replace if chipped or dull to maintain hole quality.