DeWalt Circular Saw Blade DWA412PCD 4-1/2 Inch Disc (4T PCD Diamond 5000 RPM 3/8 Arbor Thin Kerf Fiber Cement Siding HardieBacker Board Slicing Tool)

DEWALT DWA412PCD 4-1/2" 4-Tooth PCD Diamond Fiber Cement Circular Saw Blade

The DEWALT DWA412PCD 4-1/2-inch 4-tooth polycrystalline diamond (PCD) circular saw blade crosscuts fiber cement lap siding, rips exterior architectural wall panels, trims soffits, and sections cementitious backer boards without abrasive edge dulling. Engineered with spark-eroded polycrystalline diamond cutting tips mounted to a hardened alloy steel core and rated for operating speeds up to 5,000 RPM, this 3/8-inch arbor disc outlasts conventional carbide blades when cutting dense composite silica substrates. Outfitted with an aggressive Flat Top (FT) tooth geometry that accelerates stock removal while suppressing hazardous airborne respirable dust, alongside a precision 0.062-inch thin kerf that reduces motor draw, it equips professional siding contractors, exterior remodelers, and tile installers with clean, chip-free cuts across compact corded and cordless 4-1/2-inch trim saws.

Best Used For:

• Fiber Cement Lap Siding and Trim Installation: Slicing crisp, chip-free factory edges on HardiePlank lap siding, exterior composite fascia, and prefinished siding boards without edge blowout.
• Cement Backer Board and Underlayment Sizing: Sectioning HardieBacker, WonderBoard, and Durock cementitious tile backer sheets cleanly for residential bathroom and kitchen tile preparations.
• Compact Cordless Jobsite Cutting: Ripping and sizing dense composite panels directly at the installation staging area while maximizing battery runtime on 4-1/2" cordless saws.

Key Performance & Safety Features

• Polycrystalline Diamond (PCD) Tips: Synthetic diamond-tipped cutting teeth resist severe silica abrasion, providing ultra-long operational life compared to standard carbide blades.
• Low-Dust Tooth Geometry: Calibrated 4-tooth spacing and deep gullet profiles generate larger chips rather than fine airborne particulate dust for a safer breathing environment.
• Flat Top (FT) Grind Configuration: Ground tooth profile delivers stable tracking control and uniform depth of cut to eliminate jagged edges and blowout.
• Precision Laser-Cut 0.062-Inch Thin Kerf: Slim cutting profile removes minimal material, reducing saw motor drag and extending battery life on cordless trim saws.
• Hardened Alloy Steel Body: Precision-tensioned core plate maintains flatness and resists thermal deflection during continuous high-speed cutting passes.
• Universal 3/8-Inch Arbor Interface: Engineered specifically to fit 4-1/2-inch compact handheld circular trim saws (such as the DEWALT DCS571).

What's Included

• (1) DEWALT DWA412PCD 4-1/2" 4-Tooth PCD Fiber Cement Cutting Circular Saw Blade (3/8" Arbor)

Technical Specifications

Pro-Tip: When cutting stacks of fiber cement lap siding planks with a 4-1/2-inch cordless saw, keep the decorative finished face turned downward; this ensures the entering tooth cut direction pushes downward into the face to produce pristine, tear-free visible joint seams.