Irwin 87910 5/8 Inch Spade Bit Hss Hex Shank

Product Description

The IRWIN 87910 is a 5/8 inch spade-blade drill bit designed for boring through wood framing, sheathing, and similar materials in residential and light commercial construction. Built from high-speed steel with a bright finish, it delivers consistent performance when driving through dimensional lumber, engineered wood, and similar substrates. The 1/4 inch hex shank seats directly into quick-change drill chucks, reducing bit-swap time on the job. With a 4 inch shank length, it provides adequate reach for standard framing applications without requiring an extension. Two spurs at the cutting head score the wood fiber cleanly before the main paddle removes material, reducing tear-out at the entry and exit faces.

This bit is suited for electricians, plumbers, and HVAC installers who bore penetrations through wall studs, top plates, and floor joists during rough-in work. It is equally at home in a carpenter or general contractor toolkit for through-boring tasks that require a clean, controlled hole. The hex shank makes it compatible with impact drivers as well as standard drill/drivers, giving installers flexibility on the job site where tool selection varies.

Key Features

• 5/8 inch cutting diameter for standard rough-in penetrations
• High-speed steel construction for durability through repetitive boring
• 1/4 inch hex shank fits quick-change chucks and impact drivers
• 4 inch shank length provides reach through typical framing members
• Two-spur cutting geometry reduces tear-out on wood fiber
• Bright finish with no coating buildup that could affect tolerances

Compatibility

Designed for use with standard 1/4 inch hex quick-change drill chucks and impact drivers commonly used in electrical, plumbing, and HVAC rough-in applications.

Installation Notes

This bit is typically used by electricians, plumbers, and mechanical contractors during rough-in stages before drywall. Always confirm the bore location is clear of live wires, pipes, and structural fasteners before drilling. Secure the workpiece where possible to prevent kick-back, and operate at a drill speed appropriate for the material being bored. When drilling through fire-rated assemblies, consult the applicable building code for penetration sealing requirements.