{"product_id":"cleveland-c41390-square-end-mill-1-2-in-4-flute-hss","title":"Cleveland C41390 Square End Mill 1\/2 in 4 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CLEVELAND C41390 is a 4-flute, single-end square end mill designed for precision milling in ferrous and non-ferrous applications. Manufactured from high speed steel (HSS), it features a 1\/2-inch cutting diameter with a 2-inch length of cut and a 5-inch overall length, placing it in the extra-long category. The 30-degree helix angle and spiral flute geometry promote efficient chip evacuation and smooth cutting action. Right-hand cut and right-hand flute orientation are standard. The centercutting design allows plunge entry, expanding its range of useful operations. This tool is installed and run by machinists and tool-and-die professionals on manual or CNC milling equipment.\u003c\/p\u003e\n\u003cp\u003eThe C41390 belongs to the HG-4C series and is suited for milling cast iron, non-ferrous metals such as aluminum and copper alloys, and steel. The extra-long configuration makes it appropriate for deep-pocket milling, slotting, and side milling operations where standard-length end mills cannot reach the full depth of cut. The straight-cylindrical shank with Weldon flat accommodates standard end mill holders and set-screw style toolholders commonly found in production and job-shop environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-flute spiral geometry with 30-degree helix angle for balanced chip load and surface finish\u003c\/li\u003e\n  \u003cli\u003eCentercutting design enables plunge milling and slot entry without a pre-drilled hole\u003c\/li\u003e\n  \u003cli\u003eExtra-long 2-inch length of cut for deep-pocket and deep-slot applications\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction provides toughness and re-sharpenability\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, right-hand flute configuration suits standard CNC and manual spindle rotation\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank with Weldon flat for secure toolholder seating\u003c\/li\u003e\n  \u003cli\u003eUncoated finish — compatible with re-coating or use as-ground\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in milling cast iron, non-ferrous metals, and steel. Compatible with standard 1\/2-inch end mill holders and Weldon-flat set-screw toolholders. Part of the CLEVELAND HG-4C series of extra-long square end mills.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a qualified machinist. Before mounting, verify the toolholder bore is clean and free of chips or burrs that could affect runout. Torque the set screw against the Weldon flat securely before spindle engagement. Follow the machine tool manufacturer's guidelines for maximum RPM and feed rates appropriate to the workpiece material and depth of cut.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.5000 inches (1\/2 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 2.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5000 inches (1\/2 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: High Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical with Weldon Flat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Extra Long\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron, Non-Ferrous Metal, Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HG-4C\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: CLEVELAND\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C41390\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51693131006258,"sku":"C41390","price":92.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/126e3565cf8f1b375e5c11afd619ae65.jpg?v=1788307720","url":"https:\/\/voomisupply.com\/products\/cleveland-c41390-square-end-mill-1-2-in-4-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}