{"product_id":"accupro-12180594-corner-radius-end-mill-3-8-in-4-flute","title":"Accupro 12180594 Corner Radius End Mill 3\/8 in 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12180594 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and hardened materials. Built from micrograin carbide and coated with AlTiN (aluminum titanium nitride), it delivers thermal resistance and extended tool life in demanding cutting environments. The 0.03 inch corner radius reduces stress concentration at the cutting edge, lowering the risk of chipping during aggressive passes. With 4 flutes and a right-hand spiral, it provides efficient chip evacuation and a smooth finish. This tool is installed by machinists and CNC operators working in job shops, tool rooms, and production machining environments.\u003c\/p\u003e\u003cp\u003eThis end mill suits applications in ferrous metals, stainless steel, titanium, and hardened alloys where a radiused corner profile is required for part geometry or edge durability. The centercutting design allows plunge entry, making it adaptable for pocketing, slotting, and profiling operations. The single-end configuration and 3\/8 inch shank mount directly into standard ER or milling collets and end mill holders. Variable index flute spacing helps reduce harmonic chatter during high-speed machining passes.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAlTiN coating provides high-temperature resistance and extended tool life in hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate for superior wear resistance and edge retention\u003c\/li\u003e\n\u003cli\u003e0.03 inch corner radius reduces edge chipping and improves part surface finish\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows direct plunge entry for pocketing operations\u003c\/li\u003e\n\u003cli\u003eVariable index flute spacing reduces chatter at elevated spindle speeds\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand spiral with 40-degree helix angle for efficient chip flow\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement or new installation for CNC machining centers and manual milling machines using 3\/8 inch shank toolholders, collet chucks, or end mill holders.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a machinist or CNC setup technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Mount the shank to the full depth of the collet or holder bore and torque the retention nut per the toolholder manufacturer specification. Verify runout with a dial indicator 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: 3\/8 inches (0.3750 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 7\/8 inches (0.0710 inches usable per pass)\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\u003eCorner Radius\u003c\/strong\u003e: 0.03 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: plus or minus 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\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\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\u003eEnd Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single End\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\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Micrograin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 0.5 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\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: 12180594\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51727307112754,"sku":"12180594","price":77.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/660113b215b8626e7a5f25d6275b7da1.jpg?v=1788676131","url":"https:\/\/voomisupply.com\/products\/accupro-12180594-corner-radius-end-mill-3-8-in-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}