{"product_id":"accupro-12183222-corner-radius-end-mill-3-16-in-4-flute-altin","title":"Accupro 12183222 Corner Radius End Mill 3\/16 in 4 Flute Altin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12183222 is a solid carbide corner radius end mill designed for precision milling operations in demanding shop environments. It features a 3\/16 inch diameter with a 0.03 inch corner radius, a 1-1\/8 inch length of cut, and a 3 inch overall length. The 4-flute, right-hand spiral design with a 40-degree helix angle promotes efficient chip evacuation and stable cutting performance. An AlTiN coating provides heat resistance and extended tool life when cutting hardened steels, stainless alloys, and other abrasive materials. This tool is centercutting and capable of plunge entry. It is used by machinists and CNC operators in production and job-shop settings.\u003c\/p\u003e\u003cp\u003eThis end mill suits applications requiring a consistent corner radius on pocketing, slotting, contouring, and profiling operations. The extra-long length of cut allows access to deeper features without tool changes. The single-end configuration and 3\/16 inch shank diameter make it compatible with standard collet chucks and tool holders of the same bore size. It is well suited for mold and die work, aerospace components, and precision machined parts where sharp internal corners must be replaced with a controlled radius to reduce stress concentrations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide micrograin construction for rigidity and edge retention\u003c\/li\u003e\n\u003cli\u003eAlTiN coating for high-temperature performance and extended tool life\u003c\/li\u003e\n\u003cli\u003e0.03 inch corner radius reduces stress concentration at pocket floors and sidewalls\u003c\/li\u003e\n\u003cli\u003e4-flute, 40-degree right-hand helix for smooth cutting action and chip removal\u003c\/li\u003e\n\u003cli\u003eCentercutting design allows direct plunge entry into workpiece material\u003c\/li\u003e\n\u003cli\u003eExtra-long length type with 1-1\/8 inch LOC for deeper feature access\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement or standard selection for 3\/16 inch bore collet chucks, ER collet systems, and shrink-fit tool holders used in CNC machining centers and manual milling machines.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down before inserting or removing the tool from the holder. Verify collet bore size matches the 3\/16 inch shank diameter and that the tool is seated to the correct gauge length before clamping. Do not exceed tool manufacturer feed and speed recommendations for the workpiece material and coating type.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/16 inches (0.1875 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1-1\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.03 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 Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\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\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\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\u003eLength Type\u003c\/strong\u003e: Extra Long\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\u003eCorner Radius Tolerance\u003c\/strong\u003e: 0.00150 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: 0.06 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: 12183222\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51747779346738,"sku":"12183222","price":55.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/affd26bd18187433d53043f6c9b9d9b4.jpg?v=1788885371","url":"https:\/\/voomisupply.com\/products\/accupro-12183222-corner-radius-end-mill-3-16-in-4-flute-altin","provider":"Voomi Supply","version":"1.0","type":"link"}