{"product_id":"seco-17016577-roughing-end-mill-1-4-in-4-flute-cobalt","title":"Seco 17016577 Roughing End Mill 1\/4 in 4 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SECO 17016577 is a single-end roughing end mill designed for aggressive material removal in milling applications. Built from M42 cobalt high-speed steel and coated with TiCN, it handles tough ferrous and non-ferrous materials while maintaining edge life under heat. The mill diameter is 0.250 inches with a 5\/8-inch length of cut and a 3\/8-inch shank diameter. Four right-hand spiral flutes with a 30-degree maximum helix angle provide efficient chip evacuation and stable cutting geometry. This tool is center-cutting, allowing for direct plunge entry as well as conventional side milling. It is sold individually and suited for tool crib stocking or single-job procurement.\u003c\/p\u003e\n\u003cp\u003eThis roughing end mill fits standard milling machines, CNC machining centers, and manual knee mills where high-material-removal-rate roughing passes are required. The 3\/8-inch shank seats in common ER and side-lock toolholders. The TiCN coating improves wear resistance and reduces built-up edge when cutting steels, stainless, and cast iron. The overall length of 2-7\/16 inches keeps overhang manageable for rigidity-sensitive setups. Machinists and toolroom technicians installing this tool in production or maintenance environments will find it a direct fit for standard roughing operations without the need for extended-reach or variable-helix geometry.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM42 cobalt HSS construction for elevated heat and wear resistance compared to standard M2 tooling\u003c\/li\u003e\n  \u003cli\u003eTiCN coating reduces friction and extends tool life in ferrous and abrasive materials\u003c\/li\u003e\n  \u003cli\u003eCenter-cutting design allows plunge milling and ramping without a pre-drilled entry point\u003c\/li\u003e\n  \u003cli\u003e4-flute right-hand spiral configuration with 30-degree helix angle for efficient chip flow\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch shank diameter fits common ER collet and side-lock toolholder systems\u003c\/li\u003e\n  \u003cli\u003eSECO REC700 series with tight diameter tolerance of +0.003 to -0.000 inches for consistent fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or standard tooling option for milling machines and CNC machining centers accepting a 3\/8-inch shank end mill. No specific machine model compatibility was stated in the product data.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis end mill is installed by a machinist or toolroom technician. Always power down and lock out the spindle before changing tooling. Seat the shank fully and evenly in the collet or toolholder and torque the retention nut to the toolholder manufacturer specification. Verify runout with a dial indicator before beginning the cut, as excessive runout accelerates edge wear on roughing geometry.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter (Fractional)\u003c\/strong\u003e: 1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter (Decimal)\u003c\/strong\u003e: 0.2500 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: Cobalt (M42)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 5\/8 inches (0.6250 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-7\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inches (0.3750 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Helix Angle\u003c\/strong\u003e: 30 degrees\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\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCenter Cutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\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\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.003 to -0.000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 to -0.0005 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length Tolerance\u003c\/strong\u003e: +0.062 to -0.000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: REC700\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.3 pounds\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: SECO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 17016577\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SECO TOOLS","offers":[{"title":"Default Title","offer_id":51558455443762,"sku":"17016577","price":81.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/75034769c6bcafee62465e34d1cfb3f7_a969dcdf-645c-4424-85af-c1ffd0a05aab.jpg?v=1786412777","url":"https:\/\/voomisupply.com\/products\/seco-17016577-roughing-end-mill-1-4-in-4-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}