{"product_id":"accupro-311403-corner-radius-end-mill-3-16-in-5-flute","title":"Accupro 311403 Corner Radius End Mill 3\/16 in 5 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 311403 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and hardened materials. It features a 3\/16 inch diameter with a 0.030 inch corner radius, five flutes, and an AlCrTiN coating that provides high heat resistance and extended tool life in demanding cutting environments. The 38-degree helix angle and variable index flute spacing help reduce chatter and improve surface finish. At 2.5 inches overall length with a 0.75 inch length of cut, this single-end, center-cutting tool suits CNC machining centers and manual mills where controlled depth profiling and corner blending are required.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for production and job shop environments running ferrous alloys, stainless steel, hardened tool steels, and similar difficult-to-machine materials. The micrograin solid carbide substrate combined with the AlCrTiN coating supports higher spindle speeds and feed rates compared to standard HSS tooling. It is installed and used by machinists and CNC operators in precision machining, toolroom, and manufacturing applications where consistent corner geometry is critical.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAlCrTiN coating for elevated heat and wear resistance in hard material cutting\u003c\/li\u003e\n\u003cli\u003eFive-flute design increases feed rate capability and improves finish quality\u003c\/li\u003e\n\u003cli\u003eVariable index fluting reduces harmonic vibration and chatter\u003c\/li\u003e\n\u003cli\u003e0.030 inch corner radius extends tool life and reduces corner chipping on workpiece edges\u003c\/li\u003e\n\u003cli\u003eCenter-cutting geometry allows plunge entry without a pre-drilled hole\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate supports tight tolerances and repeatable performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard shank replacement end mill for CNC machining centers and manual milling machines accepting a 3\/16 inch straight shank tool holder or collet.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC operator with the machine fully powered down and spindle locked before tool changes. Secure the shank fully within the collet or tool holder to the recommended engagement depth to prevent runout and pullout during cutting. Verify tool runout with a dial indicator before initiating cuts in critical applications. Follow the machine manufacturer and tooling supplier guidelines for speeds, feeds, and depth of cut appropriate to the workpiece material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/16 inches (0.1875 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.75 inches (19.05 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches (63.5 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.030 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 38 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Micrograin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlCrTiN\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\u003eVariable Index\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChipbreaker\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\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000000 \/ -0.001000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HS\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: 311403\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51728336617778,"sku":"311403","price":60.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/218d98200d33cb945e518bb93a798718.jpg?v=1788690522","url":"https:\/\/voomisupply.com\/products\/accupro-311403-corner-radius-end-mill-3-16-in-5-flute","provider":"Voomi Supply","version":"1.0","type":"link"}