{"product_id":"accupro-12183709-corner-radius-end-mill-3-8-in-4-flute","title":"Accupro 12183709 Corner Radius End Mill 3\/8 in 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 12183709 is a solid carbide corner radius end mill designed for precision milling in demanding machining applications. With a 3\/8 inch diameter, a 1-1\/2 inch length of cut, and a 0.02 inch corner radius, this tool produces smooth transitions and reduces stress concentrations at milled corners. The AlTiN coating provides high heat resistance and extended tool life when cutting hardened steels, stainless, and other abrasive materials. At 6 inches overall length, this is an extra-long configuration suited for deep-reach milling operations. The 40-degree helix angle promotes efficient chip evacuation and smooth cutting action. Installed and operated by machinists and tool-and-die professionals on CNC machining centers and manual mills.\u003c\/p\u003e\n\u003cp\u003eThis end mill is well suited for production milling, moldmaking, die work, and general-purpose profiling where corner radius geometry is required. The extra-long 6 inch overall length makes it applicable in situations where standard-length tooling cannot reach the workpiece. Centercutting capability allows plunge entry directly into the material without a pre-drilled hole. Right-hand cutting direction and right-hand flute spiral are standard for conventional CNC spindle rotation. Micrograin carbide substrate supports higher speeds and feeds in ferrous and non-ferrous materials.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.02 inch corner radius reduces stress concentrations and improves surface finish at milled edges\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating provides high-temperature resistance and extends tool life in abrasive and hardened materials\u003c\/li\u003e\n  \u003cli\u003eMicrograin solid carbide substrate enables higher speeds and feeds compared to standard carbide grades\u003c\/li\u003e\n  \u003cli\u003eExtra-long 6 inch OAL allows deep-reach milling where standard tools fall short\u003c\/li\u003e\n  \u003cli\u003eCentercutting design permits direct plunge entry without a starter hole\u003c\/li\u003e\n  \u003cli\u003e40-degree helix angle promotes aggressive chip evacuation and reduces cutting heat\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style solid carbide corner radius end mill compatible with standard 3\/8 inch diameter toolholders, collets, and shrink-fit chucks used on CNC machining centers and manual milling machines.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool is installed by machinists using appropriate 3\/8 inch collets or toolholders rated for the intended spindle speed and feed rate. Ensure the toolholder and spindle are clean and free of debris before seating the shank. Verify runout at the holder before beginning a cut, as excessive runout accelerates wear on carbide tooling. Always follow machine manufacturer guidelines and standard shop safety practices when handling and operating end mills.\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\u003eLength of Cut\u003c\/strong\u003e: 1-1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 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\u003eCorner Radius\u003c\/strong\u003e: 0.02 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 40 degrees\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: AlTiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Extra Long\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\u003eVariable Index\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 to -0.002500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 to -0.0004 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: 0.00150 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.4 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: 12183709\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51744580927794,"sku":"12183709","price":127.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/17b45df7b58c7ac907ee22515b4169e1_fb52fdf6-0b25-4d67-b91e-ce9146a3a68f.jpg?v=1788858560","url":"https:\/\/voomisupply.com\/products\/accupro-12183709-corner-radius-end-mill-3-8-in-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}