{"product_id":"accupro-12180592-corner-radius-end-mill-5-16-in-4-flute-altin","title":"Accupro 12180592 Corner Radius End Mill 5\/16 in 4 Flute Altin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 12180592 is a solid carbide corner radius end mill designed for precision milling in ferrous and non-ferrous materials. The 5\/16-inch diameter cutter features a 0.03-inch corner radius that reduces stress concentrations at workpiece corners and extends tool life in demanding applications. With a 4-flute spiral configuration, a 40-degree helix angle, and an AlTiN coating, it handles high-temperature cutting environments effectively. The micrograin carbide substrate supports sharp edges and dimensional stability. Machinists and CNC operators install this tool in vertical and horizontal machining centers for finishing and semi-finishing passes requiring tight corner geometry.\u003c\/p\u003e\n\u003cp\u003eThis end mill is suited for milling operations in job shops, tool-and-die, and production machining environments. It performs well in hardened steels, stainless steel, cast iron, and high-temperature alloys where AlTiN coating provides thermal resistance. The centercutting geometry allows plunge entry as well as conventional peripheral and slot milling. With a 3\/4-inch length of cut and a 2-1\/2-inch overall length, it fits standard toolholding setups with a 5\/16-inch bore. Right-hand flute direction and right-hand cutting direction are standard for conventional CNC spindle rotation.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e0.03-inch corner radius reduces chipping and stress at workpiece edges\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating provides oxidation and heat resistance for extended tool life in high-temp alloys\u003c\/li\u003e\n  \u003cli\u003eMicrograin solid carbide substrate supports precise edge geometry and rigidity\u003c\/li\u003e\n  \u003cli\u003e4-flute spiral design with 40-degree helix angle for efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eCentercutting geometry enables direct plunge entry without pre-drilling\u003c\/li\u003e\n  \u003cli\u003eVariable index flute spacing reduces harmonic chatter during cutting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in CNC machining centers and manual mills equipped with 5\/16-inch toolholders, collets, or end mill holders accepting a 5\/16-inch shank diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a machinist or CNC operator. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before loading or changing tooling. Seat the shank fully in the collet or holder to the recommended grip depth and torque the retention mechanism to the toolholder manufacturer specification. Inspect the cutting edges and coating for chips or wear before each use; do not run damaged carbide tooling at speed.\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: 3\/4 inches (0.3750 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\u003eCorner Radius\u003c\/strong\u003e: 0.0300 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 \/ -0.002500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 \/ -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\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide (Micrograin)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlTiN\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\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable Index\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.5 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: 12180592\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51735349657906,"sku":"12180592","price":65.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0c829a90bbd9308b1616c666f37a6359.jpg?v=1788772034","url":"https:\/\/voomisupply.com\/products\/accupro-12180592-corner-radius-end-mill-5-16-in-4-flute-altin","provider":"Voomi Supply","version":"1.0","type":"link"}