{"product_id":"osg-5311100-square-end-mill-0-5-in-3-flute-cobalt","title":"Osg 5311100 Square End Mill 0.5 in 3 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 5311100 is a square end mill designed for general-purpose milling in metalworking and machining applications. Built from cobalt (M42 grade), it delivers improved heat and wear resistance compared to standard high-speed steel tooling. The 0.5-inch cutting diameter pairs with a 1.25-inch length of cut, a 0.5-inch shank diameter, and a 3.25-inch overall length. Three spiral flutes with a 30-degree helix angle promote efficient chip evacuation and smooth cutting action. This is a centercutting, uncoated tool suitable for plunge and peripheral milling. Machinists and CNC operators in job shops, production facilities, and maintenance environments are the primary installers and users.\u003c\/p\u003e\u003cp\u003eThe OSG 5311100 is applied in milling operations on ferrous and non-ferrous metals where cobalt tooling is preferred for its toughness at elevated temperatures. The regular-length geometry fits standard toolholders and collet chucks commonly found on vertical machining centers and manual knee mills. It is well-suited for slotting, profiling, and face milling tasks in low-to-moderate volume production runs. No extended reach is required for typical shallow-pocket and contour work within its length-of-cut range.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt M42 material grade for enhanced heat resistance and tool life over standard HSS\u003c\/li\u003e\n\u003cli\u003eThree flutes with 30-degree helix angle for balanced chip evacuation and surface finish\u003c\/li\u003e\n\u003cli\u003eCentercutting design allows direct plunge entry into workpiece material\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute configuration for standard spindle operation\u003c\/li\u003e\n\u003cli\u003eUncoated finish suitable for use with conventional cutting fluids\u003c\/li\u003e\n\u003cli\u003eRegular-length geometry fits standard collet chucks and end mill holders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-fit tool for standard 0.5-inch shank end mill holders, collet chucks, and hydraulic toolholders used on vertical machining centers and manual mills.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists using a suitable end mill holder or collet chuck sized for a 0.5-inch shank. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Verify tool runout with a dial indicator after seating the shank to minimize premature wear. Follow machine tool manufacturer torque specifications for set screws or collet nuts.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.25 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\u003eLength Type\u003c\/strong\u003e: Regular\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: 5311100\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51747147284786,"sku":"5311100","price":84.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3e43243c20f7998bd3fad1feca49c7c5.jpg?v=1788876736","url":"https:\/\/voomisupply.com\/products\/osg-5311100-square-end-mill-0-5-in-3-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}