{"product_id":"accupro-312256-corner-radius-end-mill-5-8-in-solid-carbide","title":"Accupro 312256 Corner Radius End Mill 5\/8 in Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 312256 is a solid carbide corner radius end mill designed for precision milling in demanding metal-cutting applications. The 5\/8-inch diameter cutter features a 0.060-inch corner radius, five flutes, and an AlCrTiN coating that provides high heat resistance and extended tool life in abrasive or hard materials. A 38-degree helix angle promotes efficient chip evacuation, and the variable index geometry helps reduce harmonic vibration during cut. With a 4-inch overall length and 1.625-inch reach, this tool is built for extended-reach operations where standard-length end mills cannot access the feature. It is centercutting and right-hand cutting with right-hand flute direction, suitable for plunge, slot, and profile milling.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for production environments and tool rooms working with steels, stainless steels, and high-temperature alloys. The extended reach and neck reduction to 0.593 inches allow access to deep pockets and narrow cavities without sacrificing rigidity in the flute zone. The micrograin solid carbide substrate paired with AlCrTiN coating makes it a strong choice for dry or minimal-lubrication cutting strategies common in aerospace, die and mold, and precision machining shops. A single-end configuration keeps the tool profile compact for toolholder clearance in tight setups.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.060-inch corner radius reduces stress concentrations at part corners and extends insert-zone life\u003c\/li\u003e\n\u003cli\u003eAlCrTiN coating provides oxidation resistance and hardness retention at elevated cutting temperatures\u003c\/li\u003e\n\u003cli\u003eFive-flute, variable index design minimizes chatter and improves surface finish at higher feed rates\u003c\/li\u003e\n\u003cli\u003eExtended reach of 1.625 inches with reduced neck diameter of 0.593 inches for deep-pocket access\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows direct plunge entry without a pre-drilled pilot hole\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate delivers toughness and edge sharpness in a single-end configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement or new-application tool for standard 5\/8-inch straight-shank toolholders, collet chucks, and shrink-fit holders used in CNC machining centers and knee mills.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before loading or changing end mills. Seat the shank fully into the toolholder to the minimum clamping depth recommended by the holder manufacturer before torquing the collet nut or set screw. Inspect the cutting edges and coating condition before each use; chipped or worn corners should not be run, as they can damage workpieces and toolholders.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.625 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: 0.750 inches\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: 0.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.593 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReach Length\u003c\/strong\u003e: 1.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.060 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 (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\u003eExtended Reach\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 \/ -0.001000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 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: 312256\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51748648452402,"sku":"312256","price":229.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/93c854816ed6e6b42e98b52b83fed55d.jpg?v=1788896178","url":"https:\/\/voomisupply.com\/products\/accupro-312256-corner-radius-end-mill-5-8-in-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}