{"product_id":"accupro-12183038-corner-radius-end-mill-5-16-in-4-flute-carbide","title":"Accupro 12183038 Corner Radius End Mill 5\/16 in 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12183038 is a solid carbide corner radius end mill designed for precision milling operations in metal fabrication and machining environments. It features a 5\/16 inch mill diameter, a 1-1\/8 inch length of cut, and a 0.09 inch corner radius that reduces stress concentrations and extends tool life at the cutting edge. With a micrograin carbide substrate and a TiCN coating, this tool handles harder workpiece materials at elevated cutting speeds. It is a single-end, centercutting design, allowing direct plunge entry into the workpiece. Machinists and CNC operators in job shops, aerospace, and general metalworking environments use this tool for profiling, slotting, and finishing passes.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for milling applications requiring a controlled corner radius blend on ferrous and non-ferrous metals. The long-reach geometry, with a 3 inch overall length and a 5\/16 inch shank diameter, makes it compatible with standard end mill holders and collet chucks. It performs well in finish profiling, pocket milling, and contour operations where edge integrity and dimensional control are priorities. The right-hand spiral flute geometry and 40-degree helix angle promote chip evacuation and reduce built-up edge during high-speed passes.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.09 inch corner radius reduces edge chipping and stress on the workpiece corner\u003c\/li\u003e\n\u003cli\u003eTiCN coating increases surface hardness and wear resistance for longer tool life\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate supports tight tolerances and rigidity\u003c\/li\u003e\n\u003cli\u003eCentercutting design allows direct plunge milling without a pre-drilled pilot hole\u003c\/li\u003e\n\u003cli\u003e40-degree right-hand spiral helix promotes efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eSingle-end configuration with a long 1-1\/8 inch length of cut for deeper slot and profile work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard fit for CNC machining centers and manual mills using 5\/16 inch end mill holders or collet chucks.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists or CNC setup technicians. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Seat the shank fully into the holder to the recommended grip depth before torquing the collet or set screw. Verify runout with a dial indicator after installation before initiating a cutting program.\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\u003eLength of Cut\u003c\/strong\u003e: 1-1\/8 inches (1.0000 inches decimal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3 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\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 Grade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN\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: 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\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: 0.12 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: 12183038\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51746386608434,"sku":"12183038","price":91.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2d5702321fcb73c1d329c3cbaaf21c1a_cc5c9778-078e-4cbd-9fbe-154da8abd8b0.jpg?v=1788869319","url":"https:\/\/voomisupply.com\/products\/accupro-12183038-corner-radius-end-mill-5-16-in-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}