{"product_id":"seco-17011787-square-end-mill-3-4-in-4-flute-cobalt-spc408","title":"Seco 17011787 Square End Mill 3\/4 in 4 Flute Cobalt SPC408","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SECO 17011787 is a square end mill designed for precision material removal in ferrous and non-ferrous machining applications. Built from M42 cobalt high-speed steel, it delivers heat and wear resistance needed when cutting steel, stainless steel, cast iron, aluminum, and high-temperature alloys. The tool features a 0.75 inch mill diameter, a 1.625 inch length of cut, and a 3.875 inch overall length. With four spiral flutes, a 30-degree helix angle, and a bright uncoated finish, it produces clean, accurate cuts in short-series setups where rigidity matters. Center-cutting geometry allows plunge entry as well as side milling.\u003c\/p\u003e\u003cp\u003eThis end mill fits standard short-series milling operations on vertical mills, knee mills, and CNC machining centers. It is suited for job shops, tool rooms, and production environments working with steel, stainless steel, cast iron, aluminum, and high-temperature alloys. The 0.75 inch shank diameter accepts standard ER, Weldon, or end mill holders of the same bore size. Right-hand cut and right-hand flute orientation follow conventional milling machine setups. It belongs to the SPC408 series, which covers cobalt square end mills in fractional inch sizes.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt construction for elevated heat resistance when cutting hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003eFour spiral flutes with 30-degree helix angle for efficient chip evacuation and smooth surface finish\u003c\/li\u003e\n\u003cli\u003eCenter-cutting design allows direct plunge entry without a pre-drilled pilot hole\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish suited for general-purpose use and re-sharpening without coating removal\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand flute configuration for standard milling machine spindle direction\u003c\/li\u003e\n\u003cli\u003eShort series length type maximizes rigidity and minimizes deflection in tight setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard tooling option for 0.75 inch bore end mill holders used in conventional and CNC vertical milling operations. Compatible primary workpiece materials include steel, stainless steel, cast iron, aluminum and non-ferrous metals, and high-temperature alloys per material codes P, M, K, N, and S.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis end mill is installed by a machinist or tool-room technician using a properly sized end mill holder or collet chuck. Power down and lock out the machine spindle before loading or removing tooling. Confirm holder bore size matches the 0.75 inch shank diameter and check runout after seating; maximum TIR for this tool is 0.001 inch. Follow the machine manufacturer and shop safety guidelines for speeds, feeds, and clamping force appropriate to the workpiece material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.75 inches (3\/4 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1.625 inches (1-5\/8 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.75 inches (3\/4 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.875 inches (3-7\/8 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\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: Cobalt (M42 grade)\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\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\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\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\u003eLength Type\u003c\/strong\u003e: Short\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: SPC408\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.0010 \/ -0.0000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 \/ -0.0005 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length Tolerance\u003c\/strong\u003e: +0.0620 \/ 0.0000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTIR Maximum\u003c\/strong\u003e: 0.001 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Fractional Inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 17011787\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SECO TOOLS","offers":[{"title":"Default Title","offer_id":51563647861042,"sku":"17011787","price":87.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/45e003f1f7c442eaf4a97369cd791473_15bc13fd-3386-43ea-a644-52aa4f3c842f.jpg?v=1786500196","url":"https:\/\/voomisupply.com\/products\/seco-17011787-square-end-mill-3-4-in-4-flute-cobalt-spc408","provider":"Voomi Supply","version":"1.0","type":"link"}