{"product_id":"osg-5310100-square-end-mill-1-8-in-3-flute-cobalt","title":"Osg 5310100 Square End Mill 1\/8 in 3 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 5310100 is a cobalt square end mill designed for general-purpose milling operations in a wide range of metalworking applications. Built from M42 cobalt high-speed steel, this tool delivers reliable performance in materials that generate significant heat during cutting. The end mill features a 0.125-inch cutting diameter, a 0.375-inch length of cut, and a 3-flute spiral geometry with a 30-degree helix angle. The right-hand cut and right-hand flute configuration suits standard milling setups, and the centercutting design allows plunge entry into a workpiece. It carries a 0.375-inch shank diameter and a 2.3125-inch overall length.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for use on manual knee mills, CNC machining centers, and benchtop milling machines. It is commonly applied in job shops, toolrooms, and maintenance environments where operators are working with steel alloys, stainless steel, cast iron, and similar ferrous materials. The uncoated finish makes this tool straightforward to resharpen, which is a practical advantage in toolroom settings. The Series 531 designation identifies it within the OSG standard cobalt end mill line, and its regular-length geometry fits the majority of short-reach milling tasks.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt construction for heat resistance in ferrous material cutting\u003c\/li\u003e\n\u003cli\u003e3-flute spiral design balances chip evacuation and cutting edge strength\u003c\/li\u003e\n\u003cli\u003e30-degree helix angle promotes smooth cutting action and reduced chatter\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows direct plunge milling without a pre-drilled entry hole\u003c\/li\u003e\n\u003cli\u003eUncoated finish simplifies resharpening and reconditioning in toolroom use\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute for use in standard spindle rotation setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard square end mill for use in any milling machine or machining center with a collet or end mill holder accepting a 0.375-inch shank diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a machinist or CNC operator using an appropriate collet, end mill holder, or milling chuck rated for the 0.375-inch shank. Ensure the spindle is fully stopped and the machine is powered down or in an e-stop state before inserting or removing the tool. Verify runout at the collet before beginning a cut, as excessive runout accelerates edge wear on cobalt tooling. Follow the machine manufacturer and tooling manufacturer feeds-and-speeds guidance for the specific workpiece material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.125 inches (1\/8 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: 2.3125 inches (2-5\/16 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\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\u003eEnd Mill Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M42\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\u003eCoating\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 531\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 5310100\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51750512296242,"sku":"5310100","price":55.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/67d4af93ae66dac77a94d43543e71a03.jpg?v=1788916023","url":"https:\/\/voomisupply.com\/products\/osg-5310100-square-end-mill-1-8-in-3-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}