{"product_id":"accupro-313198-corner-radius-end-mill-3-8-in-carbide-zrn","title":"Accupro 313198 Corner Radius End Mill 3\/8 in Carbide Zrn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 313198 is a solid carbide corner radius end mill designed for precision milling operations requiring a controlled corner profile. It carries a 3\/8-inch diameter, a 1-inch length of cut, and a 2-1\/2-inch overall length. The cutting end features a 0.045-inch corner radius that reduces stress concentrations at the base of a milled feature. A ZrN (zirconium nitride) coating provides wear resistance and helps extend tool life across a range of workpiece materials. The 45-degree helix angle and right-hand flute direction promote efficient chip evacuation. Centercutting capability allows direct plunge entry into the workpiece without a pre-drilled pilot hole.\u003c\/p\u003e\n\u003cp\u003eThis end mill is suited for use in CNC machining centers and manual knee mills in job shop, toolroom, and production environments. It handles slotting, profiling, and finish passes where a radiused corner is required to meet part print specifications or to avoid sharp internal corners that could serve as stress risers. The single-end, regular-length configuration fits standard tool holders accepting a 3\/8-inch shank. Machinists and tool-and-die professionals working in steel, aluminum, and similar materials will find the micrograin carbide substrate appropriate for general-purpose applications.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.045-inch corner radius reduces stress concentration at milled corners\u003c\/li\u003e\n  \u003cli\u003eSolid micrograin carbide substrate for rigidity and edge retention\u003c\/li\u003e\n  \u003cli\u003eZrN coating extends wear life and reduces built-up edge\u003c\/li\u003e\n  \u003cli\u003eCentercutting design allows direct plunge milling without a pilot hole\u003c\/li\u003e\n  \u003cli\u003e45-degree helix angle promotes smooth cutting action and chip removal\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, right-hand flute spiral geometry for standard CNC spindle use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use solid carbide corner radius end mill for standard 3\/8-inch tool holders and collets in CNC machining centers and manual milling machines.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist following the machine tool manufacturer's setup procedures. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Secure the shank in a clean, properly sized collet or end mill holder to the full recommended engagement depth to prevent tool pullout under cutting loads. Verify runout with a dial indicator before beginning the cut, as excessive runout will accelerate edge wear and degrade corner radius accuracy.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/8 inches (0.3750 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1 inch (1.0000 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0450 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide (Micrograin)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: ZrN (Zirconium Nitride)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 45 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000000 \/ -0.002000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: +0.0001 \/ -0.0004 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ACCUPRO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 313198\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51735024861490,"sku":"313198","price":79.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2ee5860d271af6965f67e3d4fdb25de2.jpg?v=1788769359","url":"https:\/\/voomisupply.com\/products\/accupro-313198-corner-radius-end-mill-3-8-in-carbide-zrn","provider":"Voomi Supply","version":"1.0","type":"link"}