{"product_id":"cleveland-c39640-square-end-mill-3-16-in-3-flute-hss","title":"Cleveland C39640 Square End Mill 3\/16 in 3 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CLEVELAND C39640 is a 3-flute square end mill designed for material removal and profile milling in metalworking applications. Manufactured from high speed steel with a bright\/uncoated finish, it features a 3\/16 inch cutting diameter, a 1\/2 inch length of cut, and a 2-3\/8 inch overall length. The 30-degree right-hand spiral helix promotes efficient chip evacuation and reduces cutting forces. The straight-cylindrical shank with Weldon flat accepts standard end mill holders and collet chucks. Center-cutting geometry allows plunge entry in addition to peripheral and slot milling operations. This tool is suited for machinists and tool and die technicians working in job shop and production environments.\u003c\/p\u003e\n\u003cp\u003eThe C39640 is rated for use in cast iron, non-ferrous metals, and steel. Its regular-length profile makes it well suited for general-purpose slotting, profiling, and step milling where extended reach is not required. The 3\/8 inch shank diameter fits standard R8, ER, and side-lock holders commonly found in knee mills and CNC machining centers. Single-end construction means the tool is replaced rather than re-indexed when the cutting end is worn.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/16 inch cutting diameter with 1\/2 inch length of cut for controlled depth passes\u003c\/li\u003e\n  \u003cli\u003e3-flute geometry balances chip clearance and surface finish on steel and cast iron\u003c\/li\u003e\n  \u003cli\u003e30-degree right-hand helix reduces cutting pressure and promotes smooth chip flow\u003c\/li\u003e\n  \u003cli\u003eCenter-cutting design permits direct plunge milling without pre-drilling\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank with Weldon flat for positive retention in side-lock holders\u003c\/li\u003e\n  \u003cli\u003eBright\/uncoated finish — suitable for re-sharpening without coating removal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with cast iron, non-ferrous metals, and steel workpieces. Fits standard 3\/8 inch end mill holders, collet chucks, and Weldon-flat side-lock holders on manual and CNC milling machines.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists following standard toolroom practice. Secure the shank fully in the holder and tighten to the holder manufacturer's torque specification before engaging the spindle. Ensure the machine spindle is fully stopped and locked out before changing or inspecting the end mill. Verify runout with a dial indicator after installation to confirm proper seating and extend tool life.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/16 inch (0.1875 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1\/2 inch (0.5 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-3\/8 inches (2.375 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inch (0.375 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 degrees\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\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\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\u003eFlute Type\u003c\/strong\u003e: Spiral\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\u003eCenter Cutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Cast Iron, Non-Ferrous Metal, Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HG-3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\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: C39640\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51695138668850,"sku":"C39640","price":62.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1e74e242959ebcde4709c86966384026.jpg?v=1788331632","url":"https:\/\/voomisupply.com\/products\/cleveland-c39640-square-end-mill-3-16-in-3-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}