Bosch Hole Saw HB436 4 3/8 Inch Diameter Core Bit (8 Percent Cobalt Alloy Progressor Tooth 48T Wood Sheet Metal Stone Quick Change Drilling Tool)

Bosch HB436 4-3/8" Progressor Tooth Bi-Metal Hole Saw

The Bosch HB436 4-3/8-inch bi-metal hole saw bores clean, precise holes through wood, sheet metal, steel studs, drywall, and soft stone substrates. Engineered with an 8% cobalt high-speed steel alloy and 48 aggressive Progressor teeth, this heavy-duty cup saw delivers exceptional thermal endurance and rapid material evacuation during high-torque drilling cycles. Outfitted with a reinforced shoulder build for structural rigidity and compatibility with standard and Quick Change arbor mandrels, it equips electricians, HVAC installers, and commercial carpenters with dependable, high-efficiency cutting performance.

Best Used For:

• Recessed Can Light Fixture Installation: Cutting perfectly sized 4-3/8-inch circular openings in drywall ceiling panels, plywood decking, and acoustic ceiling tiles.
• Plumbing and Electrical Conduit Pass-Throughs: Boring large-diameter utility access holes through wood framing studs, subflooring, and light-gauge steel framing.
• Multi-Material Commercial Fabrication: Penetrating sheet metal ducting, aluminum panels, hardwood lumber, and composite building materials on busy jobsites.

Key Performance & Safety Features

• Progressor Tooth Design: Progressive tooth pitch accelerates feed rates across thin sheet metal while preventing binding in thick lumber.
• 8% Cobalt Bi-Metal Alloy: Premium cobalt-reinforced teeth withstand extreme frictional heat for extended cutting life and edge sharpness.
• Reinforced Heavy-Duty Shoulder: Rugged backplate and shoulder construction resists high-torque deformation under aggressive drill press loads.
• Dual Mandrel Compatibility: Mounts easily onto traditional threaded arbors or fast-locking Quick Change mandrel systems with an adapter.
• Deep Chip Ejection Slots: Generously sized side slots facilitate rapid cooling airflow and allow effortless core slug removal.

What's Included

• (1) Bosch HB436 4-3/8" Bi-Metal Hole Saw

Technical Specifications

Pro-Tip: When cutting 4-3/8-inch holes for recessed lighting into ceiling drywall or wood paneling, run the drill in reverse for the first few seconds to score the outer surface cleanly; this creates a smooth entry line without tearing the face paper or splintering wood veneer.