{"product_id":"seco-17011640-square-end-mill-3-8-in-2-flute-cobalt-sp205","title":"Seco 17011640 Square End Mill 3\/8 in 2 Flute Cobalt SP205","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SECO 17011640 is a single-end, square-profile cobalt end mill designed for general-purpose milling in demanding metalworking applications. Built from M42 cobalt high-speed steel, it delivers elevated hot hardness and wear resistance compared to standard HSS tooling. The cutting diameter is 0.375 inches with a 0.5625-inch length of cut, a 0.375-inch shank diameter, and an overall length of 2.3125 inches. The two-flute, right-hand spiral configuration at a 30-degree helix angle promotes efficient chip evacuation and suits slotting, profiling, and plunge cutting operations. The bright uncoated finish is suitable for use with or without coolant in a range of ferrous materials.\u003c\/p\u003e\u003cp\u003eThe 17011640 is intended for milling steel, stainless steel, cast iron, and high-temperature alloys, covering ISO material codes P, M, K, and S. The short-length geometry makes it well-suited for rigid setups where tool deflection must be minimized, such as CNC machining centers and manual knee mills running moderate feeds and speeds. Centercutting capability allows direct plunge entry without a pre-drilled pilot hole, adding versatility for pocketing and ramping operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt construction provides superior hardness retention at elevated cutting temperatures\u003c\/li\u003e\n\u003cli\u003eTwo-flute right-hand spiral geometry at 30-degree helix for effective chip removal\u003c\/li\u003e\n\u003cli\u003eCentercutting design supports direct plunge entry into workpiece material\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish suitable across multiple ferrous material groups\u003c\/li\u003e\n\u003cli\u003eShort-length classification for improved rigidity in tight-tolerance setups\u003c\/li\u003e\n\u003cli\u003eSingle-end tool from SECO SP205 series for consistent dimensional accuracy\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-specification cobalt end mill in the SECO SP205 series. Compatible with standard 3\/8-inch diameter collets, end mill holders, and milling chucks used in CNC machining centers and manual milling machines. Primary workpiece materials include steel, stainless steel, cast iron, and high-temperature alloys per ISO codes P, M, K, and S.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. The end mill must be seated fully and uniformly in the holder to within the maximum TIR specification before use; runout directly affects tool life and surface finish. Verify holder bore condition and cleanliness before clamping. Follow machine manufacturer torque guidelines for collet nuts and set-screw holders, and confirm spindle speed and feed rate calculations are appropriate for the workpiece material before engaging the cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.375 inches (3\/8 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.5625 inches (9\/16 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: 2.3125 inches (2-5\/16 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: Cobalt (M42)\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\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\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: SP205\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Short\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.0000 to -0.0030 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\u003eMaximum TIR\u003c\/strong\u003e: 0.0010 inches\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\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\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: 17011640\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SECO TOOLS","offers":[{"title":"Default Title","offer_id":51562522935602,"sku":"17011640","price":37.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/686dc3695ff3f36c37307c60b1cee92c_2b6fe51a-9fa0-4f89-93e1-12af6bd8875e.jpg?v=1786478667","url":"https:\/\/voomisupply.com\/products\/seco-17011640-square-end-mill-3-8-in-2-flute-cobalt-sp205","provider":"Voomi Supply","version":"1.0","type":"link"}