{"product_id":"accupro-12183266-corner-radius-end-mill-5-16in-4-flute-ticn","title":"Accupro 12183266 Corner Radius End Mill 5\/16in 4 Flute Ticn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 12183266 is a solid carbide corner radius end mill designed for high-performance milling in ferrous and non-ferrous materials. It features a 5\/16-inch diameter, a 0.09-inch corner radius, and four right-hand spiral flutes with a 40-degree helix angle for aggressive chip evacuation and smooth surface finishes. The TiCN (titanium carbonitride) coating increases surface hardness and reduces friction, extending tool life in demanding cutting environments. This is a single-end, centercutting tool, meaning it can plunge directly into workpiece material. It is suited for CNC machining centers and manual mills operated by machinists and tooling professionals.\u003c\/p\u003e\n\u003cp\u003eThis end mill is built for applications requiring extra-long reach into deep pockets, slots, and contoured profiles where a standard-length tool cannot reach. The 1-5\/8-inch length of cut and 4-inch overall length provide clearance in deep-cavity work. The corner radius geometry reduces stress concentrations at the cutting edge, making it a common choice for die and mold work, aerospace components, and precision part finishing. Right-hand cutting direction suits conventional CNC setups running standard spindle rotation.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/16-inch mill diameter with 0.09-inch corner radius for blended edge geometry\u003c\/li\u003e\n  \u003cli\u003eTiCN coating for increased hardness and extended tool life in abrasive materials\u003c\/li\u003e\n  \u003cli\u003e4-flute, 40-degree helix spiral design promotes efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eCentercutting capability allows direct plunge entry into workpiece\u003c\/li\u003e\n  \u003cli\u003eExtra-long length type with 4-inch OAL and 1-5\/8-inch LOC for deep-reach applications\u003c\/li\u003e\n  \u003cli\u003eMicrograin solid carbide substrate for rigidity and wear resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a replacement or direct-use solid carbide corner radius end mill for CNC machining centers and manual mills accepting a 5\/16-inch straight shank. Shank diameter tolerance is -0.0001 to -0.0004 inches for secure collet or end mill holder retention.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist familiar with toolholder torque requirements and runout specifications. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank fully into a clean, undamaged collet or end mill holder and verify runout with a dial indicator before beginning a cut. Follow the machine manufacturer and tooling manufacturer guidelines for recommended speeds and feeds based on workpiece material.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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: 1-5\/8 inches (3.0000 inches decimal)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 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\u003eCorner Radius\u003c\/strong\u003e: 0.09 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\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\u003eHelix Angle\u003c\/strong\u003e: 40 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN\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\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\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\u003eLength Type\u003c\/strong\u003e: Extra Long\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.14 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: 12183266\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51750180258098,"sku":"12183266","price":87.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2d5702321fcb73c1d329c3cbaaf21c1a_cd42472d-71e0-4411-8d03-069f43bbf863.jpg?v=1788914124","url":"https:\/\/voomisupply.com\/products\/accupro-12183266-corner-radius-end-mill-5-16in-4-flute-ticn","provider":"Voomi Supply","version":"1.0","type":"link"}