{"product_id":"accupro-12181380-corner-radius-end-mill-5-16in-2-flute-ticn","title":"Accupro 12181380 Corner Radius End Mill 5\/16in 2 Flute Ticn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 12181380 is a single-end, centercutting corner radius end mill ground from micrograin solid carbide and finished with a TiCN (titanium carbonitride) coating. It carries a 5\/16-inch diameter, a 0.09-inch corner radius, and a 3\/4-inch length of cut, making it suited for milling operations that require a controlled edge radius to reduce stress concentration and extend workpiece life. The TiCN coating adds surface hardness and lubricity for improved tool life in ferrous and hardened materials. This tool is intended for use by machinists and tool-and-die professionals on CNC machining centers and manual mills.\u003c\/p\u003e\n\u003cp\u003eThis end mill is designed for profiling, slotting, and contouring operations in ferrous metals, hardened steels, and similar materials where a corner radius geometry is required. The 2-flute configuration allows for adequate chip evacuation in moderate-to-aggressive cuts. With a 2-1\/2-inch overall length and a 5\/16-inch shank diameter matching the cutter diameter, it fits standard collet and end mill holders common in both production and job-shop environments. It is a single-end tool, so it is replaced rather than reversed when worn.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eMicrograin solid carbide substrate for rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003eTiCN coating improves surface hardness and reduces friction in ferrous materials\u003c\/li\u003e\n  \u003cli\u003e0.09-inch corner radius reduces stress risers and improves corner finish\u003c\/li\u003e\n  \u003cli\u003eCentercutting design allows plunge milling entry\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, right-hand spiral flute direction\u003c\/li\u003e\n  \u003cli\u003e40-degree helix angle promotes smooth chip flow and reduced cutting forces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use corner radius end mill for standard 5\/16-inch collet chucks, shrink-fit holders, and end mill holders used in CNC and manual milling applications.\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 tooling guidelines. Secure the shank fully within the collet or holder to the minimum insertion depth recommended for the holder type, and verify runout before cutting. Always power down and lock out the spindle before changing tooling. Observe applicable shop safety standards for rotating cutting tools, including proper guarding and chip containment.\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\u003eCorner Radius\u003c\/strong\u003e: 0.09 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 3\/4 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\u003eShank Diameter\u003c\/strong\u003e: 5\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\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: TiCN\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\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\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.0000 to -0.0025 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: 0.0015 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\u003eWeight\u003c\/strong\u003e: 0.1 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: 12181380\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51744947896626,"sku":"12181380","price":74.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/06df374495bbcd00a3d81a4f108c8949.jpg?v=1788862554","url":"https:\/\/voomisupply.com\/products\/accupro-12181380-corner-radius-end-mill-5-16in-2-flute-ticn","provider":"Voomi Supply","version":"1.0","type":"link"}