The Diablo 7-1/4" x 4 Tooth HardieBlade Fiber Cement Saw Blade by Diablo is the professional-grade cutting solution engineered specifically for fiber cement siding, panels, and trim. Featuring a PolyCrystalline Diamond (PCD) triple chip tooth design, this specialty circular saw blade is the only PCD-tipped fiber cement blade exclusively endorsed by James Hardie Building Products - making it the definitive choice for contractors who demand long blade life, cleaner cuts, and reduced airborne dust on the job site. Whether you are cutting fiber cement boards with a corded circular saw or a cordless model, this 7-1/4" blade delivers fast, accurate results while dramatically reducing downtime from blade changes.

Key Features

• Exclusively approved by James Hardie Building Products - the only PCD-tipped fiber cement blade to earn their recommendation, giving professionals confidence they are using the right blade for genuine HardiePlank and HardiePanel products
• PCD triple chip tooth design lasting over 75 times longer than standard carbide blades - drastically reduces blade replacement frequency and keeps crews productive throughout long work days
• Triple Chip Grind (TCG) tooth geometry produces clean, smooth finishes with virtually no tear out - means less sanding, rework, and material waste on every cut
• Reduces respirable dust by up to 50% compared to standard fiber cement cutting methods - helps create a healthier work environment when cutting dust-generating materials
• Perma-SHIELD non-stick coating protects the blade against heat, gumming, and corrosion - extends the usable life of the blade and maintains cutting efficiency over time
• Tri-metal shock resistant brazing bonds the PCD tips to the plate with extreme durability - allows the blade to withstand the demanding impact forces generated during fiber cement cutting
• Advanced stabilizer vents provide the ideal combination of stability and rigidity - delivers precise, clean cuts and reduces blade wobble during operation
• Laser-cut arbor reduces vibration and premature wear - ensures accurate blade rotation and smoother cutting performance throughout the blade's life
• Optimized for both corded and cordless circular saws - provides more cuts per battery charge versus standard blades, maximizing efficiency on battery-powered tools
• Precision laser-cut thin kerf (.071") - removes less material per cut, reducing dust generation and minimizing waste for cleaner results

Why This Product

• Fiber cement is one of the most abrasive materials a saw blade encounters - the PCD tipping on this blade lasts over 75 times longer than conventional carbide, meaning fewer blade changes and lower long-term tooling costs for professionals working with fiber cement siding regularly
• Dust control is a serious job site concern when cutting fiber cement - this blade's design reduces respirable dust by up to 50%, helping crews maintain safer working conditions without requiring full respiratory setups for every cut
• The James Hardie endorsement is not cosmetic - it reflects a tested, approved match between this blade and the fiber cement products it is designed to cut, reducing the guesswork when selecting tooling for HardieBoard installations
• Compatible with both corded and cordless circular saws at a 7-1/4" diameter and 5/8" arbor, this blade fits the most common saws on the job site, making it a practical single-blade solution across a crew's full range of tools

Specifications

• Brand: Diablo
• Manufacturer Part Number: D0704DHA
• Sub-Brand: HardieBlade
• Category: Specialty - Fiber Cement Circular Saw Blade
• Diameter: 7-1/4"
• Teeth: 4 TCG (PCD)
• Arbor: 5/8"
• Kerf: .071"
• Hook Angle: 10 deg.
• Plate: .051"
• Maximum RPM: 8000
• Compatible Tools: Circular Saw; Cordless Circular Saw
• Materials: Fiber Cement
• Pack Quantity: 1
• Number of Pieces: 10
• Country of Origin: Italy

Approved Applications

• Fiber Cement Cutting - including fiber cement siding boards, panels, trim, and all fiber cement products

Frequently Asked Questions

What makes the HardieBlade different from a standard carbide fiber cement blade?

Unlike standard carbide-tipped blades, the Diablo HardieBlade uses PolyCrystalline Diamond (PCD) tipping combined with a Triple Chip Grind (TCG) tooth design. This PCD construction delivers over 75 times greater cutting life than standard carbide blades, meaning significantly fewer blade changes and more consistent cut quality across the life of the blade. It is also the only PCD-tipped fiber cement blade exclusively endorsed by James Hardie Building Products.

Will this blade work with a cordless circular saw?

Yes. The Diablo HardieBlade is designed for use in both corded circular saws and cordless circular saws. Its 7-1/4" diameter and 5/8" arbor are standard sizes compatible with most circular saws. Additionally, the blade is engineered for extreme cutting efficiency on cordless tools, providing more cuts per battery charge compared to standard blades.

How does this blade help with dust control when cutting fiber cement?

The HardieBlade is engineered to reduce respirable dust by up to 50% compared to standard fiber cement cutting approaches. The precision laser-cut thin kerf (.071") removes less material per cut, which directly reduces the volume of dust generated. Note that dust generation does not necessarily correlate directly to exposure risk.

What is the maximum RPM rating for this blade, and why does it matter?

The Diablo HardieBlade is rated to a maximum of 8000 RPM. This rating defines the safe operating speed limit for the blade - always verify that the RPM of your circular saw does not exceed this value before use. Operating within the rated RPM ensures safe blade rotation and the stability and accuracy that the advanced stabilizer vents and laser-cut arbor are designed to provide.