{"product_id":"irwin-marathon-6-1-2-in-d-x-5-8-in-classic-carbide-circular-saw-blade-18-teeth","title":"Irwin Marathon 6-1\/2 in. D X 5\/8 in. Classic Carbide Circular Saw Blade 18 teeth","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eIrwin Marathon 6-1\/2 in. D X 5\/8 in. Classic Carbide Circular Saw Blade 18 teeth\u003c\/strong\u003e is engineered to power through framing and ripping tasks with precision and durability. Built for the job site and tough projects, this blade blends longevity with trustworthy performance so you can finish faster with cleaner edges.\u003c\/p\u003e \u003cp\u003eKey features designed to optimize your cuts:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 6-1\/2\" (165 mm)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eArbor size:\u003c\/strong\u003e 5\/8\" (16 mm)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTeeth:\u003c\/strong\u003e 18\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eGrind:\u003c\/strong\u003e ATB (Alternate Top Bevel) for clean crosscuts\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHook angle:\u003c\/strong\u003e 23° to reduce snag and improve feed rate\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eKerf:\u003c\/strong\u003e 0.063\" for efficient material removal with less resistance\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Carbide tips deliver long wear life and durability in construction lumber\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaximum speed:\u003c\/strong\u003e 8300 RPM, compatible with modern cordless saws\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStyle:\u003c\/strong\u003e Classic design that prioritizes reliability on demanding sites\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUsage:\u003c\/strong\u003e Framing and ripping across softwoods and common construction lumber\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Carded for sturdy presentation and easy storage\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Irwin Marathon\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this blade stands out\u003c\/h3\u003e\n\u003cp\u003eCarbide teeth stay sharper longer in the real world of nails, hidden fasteners, and abrasive framing lumber. The ATB grind smooths crosscuts and reduces edge tear-out on softwoods and plywood, while the 23° hook angle helps maintain steady feed and minimizes binding when you’re pushing through thicker stock. The 0.063\" kerf strikes a balance between fast cutting and blade rigidity, so you can finish framing rough studs or trimming sheets without bogging down your saw.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eFrame construction on jobsites where durability and speed matter more than ultra-fine finishes\u003c\/li\u003e \u003cli\u003eRipping through standard framing lumber and sheets of plywood\u003c\/li\u003e \u003cli\u003eCordless saw workflows on portable setups where quick, accurate cuts are essential\u003c\/li\u003e \u003cli\u003eRenovation projects that require reliable crosscuts without frequent blade changes\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow it compares and who benefits\u003c\/h3\u003e\n\u003cp\u003eThis Marathon blade is optimized for heavy-duty framing and rough cuts, offering a longer blade life and dependable performance under demanding conditions. It isn’t a finishing blade; instead, it prioritizes durability, speed, and consistent cut quality in construction scenarios. If you’re upgrading from a standard steel blade, you’ll notice longer life between sharpenings and better resistance to material wear during repeated framing passes.\u003c\/p\u003e \u003ch3\u003ePractical tips for best results\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify your saw's arbor matches 5\/8\" and ensure the blade is securely tightened before use.\u003c\/li\u003e \u003cli\u003ePair with sharp carbide teeth—avoid pushing too aggressively to reduce heat and potential burn marks.\u003c\/li\u003e \u003cli\u003eUse for framing and ripping on clean, well-supported stock to maximize accuracy and edge quality.\u003c\/li\u003e \u003cli\u003eReplace when you notice substantial tooth wear or frequent burning on tough stock.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Irwin Marathon 6-1\/2 in. Classic Carbide Circular Saw Blade, you get a purpose-built tool that delivers reliable framing and ripping performance, proven durability, and compatibility with cordless saws—so you can keep building with confidence on every project.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Irwin","offers":[{"title":"Default Title","offer_id":52181665939730,"sku":"2467397","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0928\/1024\/8466\/files\/2467397_A.eps_High.jpg?v=1775679150","url":"https:\/\/nationalhardwaregroup.com\/products\/irwin-marathon-6-1-2-in-d-x-5-8-in-classic-carbide-circular-saw-blade-18-teeth","provider":"National Hardware Group","version":"1.0","type":"link"}