This 24-tooth rip blade combines proven thin kerf design with tungsten carbide tips to deliver fast, efficient cuts. The 0.07-inch kerf width means less material waste and less work for your saw motor — exactly what you need when ripping through stack after stack of dimensional lumber on Montana jobsites.
Cutting Performance and Applications
The 20-degree hook angle tells you everything about this blade’s personality — it’s aggressive. That steep angle pulls the blade through wood, making rip cuts feel effortless. Combined with the Alternate Top Bevel (ATB) grind, you get a blade that handles hardwoods, softwoods, plywood, and composition board without breaking a sweat.
| Specification | Value |
|---|---|
| Diameter | 7-1/4 inches |
| Tooth Count | 24 |
| Arbor Size | 5/8 inch (standard/universal) |
| Kerf Width | 0.07 inches |
| Blade Thickness | 0.05 inches |
| Hook Angle | 20 degrees |
| Max Cutting Depth | 2-3/8 inches |
This blade fits standard 7-1/4 inch circular saws with 5/8 inch arbors — basically every sidewinder and worm drive on your truck. The installation is straightforward: disconnect power, match the arbor, verify the rotation arrow matches your saw’s direction, and tighten securely.
The 24-tooth configuration is the sweet spot for ripping. More teeth would slow you down and generate heat. Fewer teeth would leave a rougher cut. Irwin designed this for framing and ripping — the bread and butter of residential construction.
Durability and Design Features
High-density tungsten carbide tips form the business end of this blade. That’s not marketing fluff — carbide density directly correlates to how long those teeth stay sharp when chewing through resinous pine or abrasive OSB.
The heat vents and expansion slots prevent warping during extended cuts. Run this blade hard through a pile of 2x12s, and those vents keep the steel from turning into a potato chip. The reinforced shoulder adds impact resistance — crucial when you inevitably hit a hidden nail or drop the saw.
Irwin applies a corrosion-resistant coating to prevent rust, which matters more than you’d think. Montana humidity swings mean tools left in the truck develop surface rust faster than you’d expect. The precision-ground teeth deliver smooth, accurate cuts right out of the package.
Multiple customer reviews highlight this blade’s longevity and value. Users consistently mention smooth and efficient cuts, with one calling it the “best value for an economy blade.” The blade earned 4.7 stars at both Lowe’s (47 reviews) and Walmart (114 reviews), plus a perfect 5.0 at Grainger.
Skip this blade if you need furniture-grade crosscuts or perfectly smooth finish cuts. The 24-tooth ATB configuration leaves a rougher surface than a 40 or 60-tooth blade would. But for framing, decking, and general construction? This blade earns its keep.
Frequently Asked Questions
Q: Will this blade work in my older Skilsaw 77? Yes, it’s compatible with any circular saw that accepts 7-1/4 inch blades with a 5/8 inch arbor — which includes virtually every worm drive and sidewinder made in the last 40 years.
Q: How does this compare to premium blades from Diablo or Freud? Irwin positions this blade for dependable performance. Premium blades might stay sharp longer or cut slightly smoother, but for general framing work, the performance difference may not matter for most contractors.
Q: Can I use this for cutting treated lumber? The blade handles both hardwoods and softwoods, which includes pressure-treated pine. The carbide tips resist the corrosive chemicals in treated lumber better than standard steel would.
Q: What’s the actual kerf measurement? The kerf measures 0.07 inches — that’s true thin-kerf territory, reducing waste and motor strain compared to standard 1/8-inch kerf blades.
Q: How many different model numbers does this blade have? Irwin uses multiple model numbers for what appears to be the same blade: 24030, 2001060, 14035, 15130, 25130, 14025, and 1974249. Different retailers and packaging configurations account for the variety.
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