{"product_id":"accupro-12183666-corner-radius-end-mill-5-16in-4-flute-carbide","title":"Accupro 12183666 Corner Radius End Mill 5\/16in 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12183666 is a solid carbide corner radius end mill designed for precision milling operations in metalworking and machining applications. It features a 5\/16 inch diameter with a 0.045 inch corner radius and a 1-1\/2 inch length of cut, making it well suited for profiling, slotting, and finishing passes where edge blending and corner protection are required. The micrograin carbide construction provides the hardness and wear resistance needed for demanding cutting conditions. With four flutes and a right-hand spiral flute geometry, it delivers efficient chip evacuation and smooth surface finishes. This is a single-end, centercutting tool, meaning it can be used for plunge cuts as well as lateral passes.\u003c\/p\u003e\u003cp\u003eThis end mill is intended for use in CNC machining centers and manual milling machines across job shops, tool rooms, and production environments. The extra-long 6 inch overall length allows access to deep features and pockets that standard-length tools cannot reach. The bright uncoated finish makes it appropriate for a range of ferrous and non-ferrous materials where coating compatibility is a consideration. It is installed and used by machinists and CNC operators working to close tolerances in precision part manufacture.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid micrograin carbide construction for hardness and extended tool life\u003c\/li\u003e\n\u003cli\u003e0.045 inch corner radius reduces stress concentration and improves edge durability\u003c\/li\u003e\n\u003cli\u003e4 flutes with right-hand spiral geometry for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eCentercutting design enables plunge milling and full-slot entry\u003c\/li\u003e\n\u003cli\u003eExtra-long 6 inch OAL provides reach into deep pockets and features\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish suitable for a wide range of workpiece materials\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and general-purpose corner radius end mill for use in standard 5\/16 inch collet chucks, end mill holders, and shrink-fit tooling systems compatible with 5\/16 inch shank diameters.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool holding and runout. Ensure the machine spindle and tool holder are clean and free of debris before seating the shank. Confirm proper tool projection and secure clamping torque per the holder manufacturer specification before initiating any cutting cycle. Do not exceed the recommended depth of cut or feed rate for the workpiece material and tool diameter.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 5\/16 inches (0.3125 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1-1\/2 inches (1.2500 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\u003eCorner Radius Tolerance\u003c\/strong\u003e: plus or minus 0.00150 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: 5\/16 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\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000000 to -0.002500 inches\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\/Finish\u003c\/strong\u003e: Bright\/Uncoated\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\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Extra Long\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.24 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 12183666\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51748549624114,"sku":"12183666","price":100.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0ab9c90db5d877d99b3a62da72ae6dba.jpg?v=1788895135","url":"https:\/\/voomisupply.com\/products\/accupro-12183666-corner-radius-end-mill-5-16in-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}