{"product_id":"osg-5226200-square-end-mill-13-64-in-2-flute-cobalt","title":"Osg 5226200 Square End Mill 13\/64 in 2 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 5226200 is a double-end cobalt square end mill designed for milling ferrous and difficult-to-machine materials in metalworking applications. Built from M42 cobalt high-speed steel, it delivers heat resistance and edge retention under demanding cutting conditions. The tool features a 13\/64 inch (0.2031 inch) milling diameter, a 1\/2 inch length of cut, and a 30-degree right-hand helix that promotes efficient chip evacuation. With two flutes and a bright uncoated finish, it suits general-purpose profiling, slotting, and contouring operations where coolant compatibility and surface visibility matter. The double-end design extends tool life by providing two usable cutting ends per shank.\u003c\/p\u003e\n\u003cp\u003eThis end mill is intended for use in CNC machining centers, manual knee mills, and tool-and-die operations where precise edge geometry is required. It is well-suited for cutting steel, alloy steel, stainless steel, and similar ferrous metals. The 3\/8 inch shank diameter fits standard ER and milling collet systems commonly found in both production and job-shop environments. Center-cutting capability allows plunge entry without a pre-drilled pilot hole, adding versatility across milling routines.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM42 cobalt HSS construction provides superior heat and wear resistance compared to standard M2 HSS tooling\u003c\/li\u003e\n  \u003cli\u003eDouble-end design offers two cutting ends per tool, extending usable tool life\u003c\/li\u003e\n  \u003cli\u003e30-degree right-hand spiral helix promotes smooth chip flow and reduces cutting forces\u003c\/li\u003e\n  \u003cli\u003eCenter-cutting geometry allows direct plunge milling without a pilot hole\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish is compatible with a wide range of cutting fluids and lubricants\u003c\/li\u003e\n  \u003cli\u003eRegular-length profile suits standard reach applications without sacrificing rigidity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use cutting tool for 3\/8 inch collet and milling chuck systems; part of the OSG Series 522 double-end cobalt end mill line.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and locked out before changing tooling. Seat the 3\/8 inch shank fully into the collet or chuck and tighten to the tool holder manufacturer's specified torque range. Verify runout with a dial indicator before beginning a cut, and confirm proper cutting fluid flow if machining hardened or stainless steel grades.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 13\/64 inch (0.2031 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1\/2 inch (0.5000 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-1\/8 inches (3.1250 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inch (0.3750 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: Cobalt (M42 HSS)\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\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Double End\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 522\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: OSG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5226200\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51733291761970,"sku":"5226200","price":77.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4a22dd58fe9f2ee57432aff4a9ef6335.jpg?v=1788753672","url":"https:\/\/voomisupply.com\/products\/osg-5226200-square-end-mill-13-64-in-2-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}