{"product_id":"cleveland-c42103-square-end-mill-0-25-in-2-flute-hss","title":"Cleveland C42103 Square End Mill 0.25 in 2 Flute Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CLEVELAND C42103 is a double-end, two-flute square end mill manufactured from high speed steel (HSS). It cuts on both ends, extending tool life between sharpenings. The mill measures 0.25 inches in diameter with a 0.375-inch length of cut and a 0.375-inch straight cylindrical shank that also accepts a Weldon flat holder. Overall length is 2.875 inches, placing it in the stub length category. A 30-degree helix angle promotes efficient chip evacuation. The right-hand cut and right-hand spiral flute geometry suit general-purpose milling operations. This tool is center-cutting, allowing direct plunge entry without a pre-drilled hole.\u003c\/p\u003e\n\u003cp\u003eThe C42103 is suited for milling cast iron, non-ferrous metals, and steel in light to medium material removal applications. Its stub length classification means reduced overhang and improved rigidity in tight setups or shallow pockets. Machinists and tool-and-die professionals typically deploy this end mill on manual knee mills, CNC machining centers, and benchtop mills when working in the HD-2 series application range. The uncoated HSS construction makes it straightforward to resharpen in-house, which is common practice in job shops running small production runs or prototype work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble-end design doubles usable tool life before replacement\u003c\/li\u003e\n  \u003cli\u003eCenter-cutting geometry allows direct plunge milling without pre-drilling\u003c\/li\u003e\n  \u003cli\u003e30-degree helix angle promotes chip flow and reduces heat buildup\u003c\/li\u003e\n  \u003cli\u003eStub length reduces overhang for improved rigidity in shallow-pocket work\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank with Weldon flat accepts standard end mill holders\u003c\/li\u003e\n  \u003cli\u003eUncoated HSS construction is resharpenable with standard grinding equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use on cast iron, non-ferrous metals, and steel workpieces. Compatible with standard 0.375-inch end mill holders and Weldon flat collet systems on manual mills and CNC machining centers.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist following shop safety protocols. Ensure the machine spindle is fully stopped and locked out before securing or removing the end mill from the holder. Use a properly sized end mill holder or Weldon flat collet and torque the set screw to the holder manufacturer specification. Verify runout with a dial indicator before beginning the cut to avoid premature tool wear or workpiece damage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.25 inches (1\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.375 inches (3\/8 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.375 inches (3\/8 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.875 inches (2-7\/8 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\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\u003eLength Type\u003c\/strong\u003e: Stub\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCenter Cutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDouble End\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Uncoated\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: HD-2\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: C42103\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51711636537650,"sku":"C42103","price":54.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3e9154c97e01a9deec9e8995faf303cd.jpg?v=1788477951","url":"https:\/\/voomisupply.com\/products\/cleveland-c42103-square-end-mill-0-25-in-2-flute-hss","provider":"Voomi Supply","version":"1.0","type":"link"}