{"product_id":"osg-5310600-square-end-mill-7-16-in-3-flute-cobalt","title":"Osg 5310600 Square End Mill 7\/16 in 3 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 5310600 is a cobalt square end mill designed for milling operations in ferrous and difficult-to-machine materials. Built from M42 cobalt high-speed steel, it handles elevated cutting temperatures better than standard HSS tooling. The cutter measures 7\/16 inch in diameter with a 1 inch length of cut and a 3\/8 inch shank diameter, giving it a regular-length profile suited for most vertical and horizontal milling setups. Three spiral flutes with a 30-degree helix angle promote efficient chip evacuation and smooth cutting action. The centercutting geometry allows plunge entry directly into the workpiece without a pre-drilled pilot hole.\u003c\/p\u003e\u003cp\u003eThis end mill is used in job shop, maintenance, and production machining environments where cobalt tooling is preferred over carbide for its toughness and resistance to chipping. At 2-11\/16 inches overall length, it fits standard ER and straight-bore toolholders with a 3\/8 inch bore. Right-hand cut and right-hand flute configuration matches conventional milling machine spindle rotation. Uncoated finish makes it straightforward to re-sharpen. Machinists, tool-and-die makers, and MRO technicians working in steel, stainless, and cast iron will find this a practical general-purpose choice in the Series 531 line.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt construction for improved heat resistance over standard M2 HSS\u003c\/li\u003e\n\u003cli\u003e3 spiral flutes with 30-degree helix angle for smooth chip flow\u003c\/li\u003e\n\u003cli\u003eCentercutting design enables direct plunge milling\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute — standard spindle compatibility\u003c\/li\u003e\n\u003cli\u003eUncoated surface for easy re-sharpening\u003c\/li\u003e\n\u003cli\u003eRegular length profile fits most standard toolholders and fixtures\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style cutting tool for use in milling machines accepting a 3\/8 inch straight shank, including ER collet chucks, end mill holders, and similar toolholding systems compatible with Series 531 geometry.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists using appropriate collet chucks or end mill holders rated for the 3\/8 inch shank diameter. Ensure the spindle is fully stopped and locked before seating or removing the tool. Verify runout with a dial indicator after installation to confirm proper seating. Follow machine manufacturer guidelines for speeds and feeds when cutting with cobalt end mills.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 7\/16 inch (0.4375 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1 inch (1.0000 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inch (0.3750 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-11\/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\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\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\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\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: 5310600\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51749274485042,"sku":"5310600","price":75.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/61e042727bfdf95602bc562d91fae7e1.jpg?v=1788903900","url":"https:\/\/voomisupply.com\/products\/osg-5310600-square-end-mill-7-16-in-3-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}