{"product_id":"osg-5313100-square-end-mill-3-4-in-3-flute-cobalt","title":"Osg 5313100 Square End Mill 3\/4 in 3 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 5313100 is a cobalt square end mill designed for general-purpose milling in ferrous and non-ferrous metals. It features a 0.75-inch cutting diameter with a 1.625-inch length of cut, a 0.75-inch shank diameter, and an overall length of 3.875 inches. Constructed from M42 cobalt high-speed steel, it delivers improved heat and wear resistance compared to standard HSS tooling. The three-flute geometry and 30-degree helix angle promote efficient chip evacuation and smooth cutting action. This end mill ships uncoated and is suited for shops running conventional milling operations where cobalt-grade tooling is specified.\u003c\/p\u003e\u003cp\u003eThis end mill is used in vertical and horizontal milling machine setups for slotting, profiling, and peripheral milling operations. The regular-length configuration and centercutting design allow both plunge and side-milling entries. It is appropriate for production and maintenance machining environments where a reliable cobalt end mill is preferred over carbide for interrupted cuts or tougher setups. The right-hand cut and right-hand spiral flute are standard for conventional and climb milling on most CNC and manual mills.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt HSS construction for enhanced heat resistance and tool life in ferrous materials\u003c\/li\u003e\n\u003cli\u003eThree-flute spiral design with 30-degree helix angle for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry enables direct plunge entry without a pilot hole\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand flute — compatible with standard spindle rotation\u003c\/li\u003e\n\u003cli\u003eUncoated finish suitable for re-sharpening and general-purpose applications\u003c\/li\u003e\n\u003cli\u003eRegular-length series for rigid setups with minimal overhang\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in milling machines and machining centers accepting a 0.75-inch straight shank, including ER and side-lock collet systems sized for 3\/4-inch tooling. Part of OSG Series 531.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before loading or changing tooling. Secure the shank with the appropriate collet or end mill holder to the full recommended engagement depth. Verify runout with a dial indicator before beginning the cut, as excessive runout accelerates edge wear on cobalt tooling.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1.625 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.875 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\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\u003eCoating\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 531\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.3 pounds\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: 5313100\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51737567592754,"sku":"5313100","price":110.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/286c94d0a06c88b881010d6da9e1842b.jpg?v=1788790544","url":"https:\/\/voomisupply.com\/products\/osg-5313100-square-end-mill-3-4-in-3-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}