{"product_id":"osg-5485100-square-end-mill-1-in-4-flute-cobalt","title":"Osg 5485100 Square End Mill 1 in 4 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 5485100 is a cobalt square end mill designed for milling ferrous and hard materials in machining centers and manual mills. Built from M42 cobalt high-speed steel, it delivers heat resistance and edge retention when cutting steel alloys, stainless steel, and other tough workpiece materials. The 1-inch cutting diameter pairs with a 3-inch length of cut, giving machinists significant reach for deep-pocket and slotting operations. Four spiral flutes at a 30-degree helix angle promote efficient chip evacuation and a smooth cutting action. This is a single-end, uncoated tool in the OSG Series 548 regular-length lineup.\u003c\/p\u003e\u003cp\u003eThe 5485100 is suited for general-purpose milling operations including side milling, slotting, and profiling in job shops, tool rooms, and production environments. The centercutting geometry allows direct plunge entry into the workpiece without a pre-drilled hole, adding flexibility to the operation. The 1-inch shank diameter fits standard ER, Weldon, and shrink-fit toolholders commonly found in both vertical and horizontal machining centers. Right-hand cut and right-hand flute configuration follow standard spindle rotation.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 cobalt HSS construction for improved heat and wear resistance over standard M2 tools\u003c\/li\u003e\n\u003cli\u003eFour spiral flutes with 30-degree helix angle for efficient chip removal and surface finish\u003c\/li\u003e\n\u003cli\u003eCentercutting design enables direct plunge milling without pre-drilling\u003c\/li\u003e\n\u003cli\u003e1-inch cutting diameter with 3-inch length of cut for deep-pocket work\u003c\/li\u003e\n\u003cli\u003eUncoated finish — suitable for re-sharpening in the field or tool room\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand flute, single-end configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard OEM-style replacement or direct-use tool compatible with 1-inch bore toolholders including ER collet chucks, Weldon flat-seat holders, and shrink-fit holders used in vertical and horizontal CNC machining centers.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in an e-stop or locked-out state before loading or removing the end mill. Set tool length offset in the machine controller after seating the shank to the full recommended engagement depth in the toolholder. Inspect cutting edges and shank for damage before each use.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\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\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: No\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: 548\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Regular\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: 5485100\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51746737094962,"sku":"5485100","price":209.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/66fa4f5f0b31fb0a89e4015d33b811c1.jpg?v=1788873240","url":"https:\/\/voomisupply.com\/products\/osg-5485100-square-end-mill-1-in-4-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}