{"product_id":"osg-5404300-square-end-mill-1-1-8-in-6-flute-cobalt","title":"Osg 5404300 Square End Mill 1-1\/8 in 6 Flute Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 5404300 is a cobalt square end mill built for material removal in demanding milling applications. Manufactured from M42 cobalt high-speed steel, this 6-flute tool offers a 1.125-inch cutting diameter and a 2-inch length of cut, making it well suited for slotting, peripheral milling, and face milling operations where tool rigidity and edge retention matter. The right-hand cut, right-hand spiral flute design with a 30-degree helix promotes efficient chip evacuation and stable cutting action. It ships uncoated, ready for use or further coating at the shop's discretion. A licensed machinist or CNC programmer typically selects and installs this tool.\u003c\/p\u003e\n\u003cp\u003eThis end mill is designed for use in vertical machining centers, knee mills, and CNC milling machines. Its 0.875-inch shank diameter fits standard collet chucks and end mill holders common in job shop and production environments. The regular-length configuration and 4.25-inch overall length suit general-purpose milling tasks in ferrous and non-ferrous materials. The Series 540 designation places it within OSG's cobalt end mill product family. It is a single-end tool intended for professional machine shop use.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM42 cobalt construction for elevated heat resistance and edge retention compared to standard HSS\u003c\/li\u003e\n  \u003cli\u003e6-flute design increases feed rate potential and improves surface finish in appropriate materials\u003c\/li\u003e\n  \u003cli\u003e30-degree right-hand spiral flute promotes chip flow and reduces chatter\u003c\/li\u003e\n  \u003cli\u003eUncoated finish allows compatibility with a wide range of cutting fluids and post-coating processes\u003c\/li\u003e\n  \u003cli\u003eNon-centercutting geometry -- not intended for plunge milling; use helical or ramp entry\u003c\/li\u003e\n  \u003cli\u003eRegular length configuration provides stiffness and minimizes deflection in standard-depth cuts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use cobalt square end mill fitting standard 0.875-inch end mill holders and collet chucks used in CNC and manual milling machine setups.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a qualified machinist or CNC toolsetter. Ensure the machine spindle is fully stopped and locked out before mounting or removing the tool. Seat the shank fully into the holder and torque the retention hardware to the machine manufacturer's specification for the holder type in use. Verify runout with a dial indicator after mounting before beginning a cut, and confirm this tool's non-centercutting geometry is accounted for in the toolpath -- use helical entry or ramp entry rather than direct plunge.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1.125 inches (1-1\/8 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Cobalt (M42)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.875 inches (7\/8 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.25 inches (4-1\/4 inches)\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: 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\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 540\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 5404300\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51727774744882,"sku":"5404300","price":190.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0c541da746d7bf107e2b5ebf4719bb06.jpg?v=1788682153","url":"https:\/\/voomisupply.com\/products\/osg-5404300-square-end-mill-1-1-8-in-6-flute-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}