{"product_id":"osg-5360400-square-end-mill-5-16-in-3-flute-cobalt","title":"Osg 5360400 Square End Mill 5\/16 in 3 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 5360400 is a cobalt square end mill designed for milling operations in ferrous and difficult-to-machine materials. Built to Series 536 specifications, it features a 5\/16-inch cutting diameter, a 1-3\/8-inch length of cut, and a 3\/8-inch shank diameter with an overall length of 3-1\/8 inches. The three-flute geometry balances chip evacuation with cutting stability, while the 30-degree right-hand spiral helix promotes smooth cutting action and reduces chatter. Manufactured from M42 cobalt high-speed steel, this end mill offers superior heat and wear resistance compared to standard M2 HSS tooling. It ships uncoated and is center-cutting capable, allowing plunge entry in addition to peripheral and slot milling cuts.\u003c\/p\u003e\n\u003cp\u003eThis end mill suits general-purpose and long-reach milling applications in job shops, tool rooms, and production environments. The long-series length classification makes it appropriate where standard-length tools lack sufficient reach, such as deep pocket milling, shoulder milling, and contour work in ferrous alloys, stainless steels, and heat-resistant alloys. A licensed machinist or CNC operator typically selects this tool for manual mills, knee mills, and CNC machining centers running appropriate feeds and speeds for cobalt tooling. The right-hand cut and right-hand flute configuration is compatible with standard spindle rotation on conventional milling equipment.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM42 cobalt construction for improved heat resistance and tool life in hard or abrasive materials\u003c\/li\u003e\n  \u003cli\u003eCenter-cutting design allows direct plunge entry without a pre-drilled pilot hole\u003c\/li\u003e\n  \u003cli\u003e30-degree right-hand spiral helix reduces cutting forces and improves chip flow\u003c\/li\u003e\n  \u003cli\u003eThree-flute geometry provides a balance of chip clearance and radial support\u003c\/li\u003e\n  \u003cli\u003eLong-series length classification extends reach for deep pocket and shoulder milling\u003c\/li\u003e\n  \u003cli\u003eUncoated finish suitable for applications where coatings are not required or compatible fluids are used\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style cutting tool for use in standard milling chucks, collet holders, and end mill holders accepting a 3\/8-inch shank diameter, on manual knee mills and CNC machining centers with right-hand spindle rotation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and operation should be performed by a qualified machinist familiar with milling tool setup and safe machine operation. Secure the shank fully in a clean, undamaged collet or end mill holder and verify runout before cutting. Consult OSG Series 536 speeds-and-feeds data for the specific workpiece material before starting a cut. Never exceed the tool manufacturers recommended depth of cut or feed rate for cobalt HSS end mills.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 5\/16 inch (0.3125 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1-3\/8 inches (1.3750 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: 3-1\/8 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 (M42 HSS)\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\u003eLength Type\u003c\/strong\u003e: Long\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 536\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: 5360400\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51727092252978,"sku":"5360400","price":74.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/442ca25dd9e258dfece9d622793559dd.jpg?v=1788673184","url":"https:\/\/voomisupply.com\/products\/osg-5360400-square-end-mill-5-16-in-3-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}