{"product_id":"osg-20430300-corner-radius-end-mill-1-4-in-3-flute-carbide","title":"Osg 20430300 Corner Radius End Mill 1\/4 in 3 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 20430300 is a solid carbide corner radius end mill designed for precision milling of non-ferrous metals. It features a 1\/4 inch diameter, a 0.03 inch corner radius, and three right-hand helical flutes with a high helix angle of 45 degrees. The single-end design runs at a coarse pitch with a 1\/4 inch length of cut and a 2.5 inch overall length. The bright, uncoated finish makes it well-suited for aluminum, brass, copper, and similar non-ferrous workpiece materials. Machinists and CNC operators install this end mill in standard toolholders for contouring, profiling, and light roughing passes where corner geometry control is critical.\u003c\/p\u003e\n\u003cp\u003eThis end mill is intended for use in CNC machining centers and manual mills working primarily with non-ferrous metals. The extended reach configuration, with a 1-1\/8 inch reach length and a 0.246 inch neck diameter, allows access to features with clearance constraints. The straight-cylindrical shank fits standard collet chucks and end mill holders accepting 1\/4 inch shanks. The center-cutting geometry supports plunge entry where required. It is part of OSG Series 2043 and is suited to job shops, production facilities, and tool rooms machining aluminum-intensive components.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and wear resistance in non-ferrous applications\u003c\/li\u003e\n  \u003cli\u003e0.03 inch corner radius reduces stress concentration and improves edge life on profiled cuts\u003c\/li\u003e\n  \u003cli\u003e3 right-hand flutes with 45-degree high helix angle promote efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eExtended reach design with 1-1\/8 inch reach length and reduced neck diameter of 0.246 inches\u003c\/li\u003e\n  \u003cli\u003eCenter-cutting capable, allowing direct plunge entry without a pre-drilled hole\u003c\/li\u003e\n  \u003cli\u003eUncoated bright finish optimized for non-ferrous metals where coatings may cause built-up edge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard toolholders accepting a 1\/4 inch straight-cylindrical shank. Primary workpiece material designation is non-ferrous metal (material code N), including aluminum, brass, and copper alloys.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eA qualified machinist or CNC operator should install this end mill in a clean, properly sized collet or end mill holder, ensuring full shank engagement to the recommended grip depth. Verify spindle runout and toolholder condition before use, as excessive runout accelerates edge wear on carbide tooling. Always bring spindle speed and feed rate to zero before changing tooling, and confirm workpiece fixturing is secure. Follow the machine manufacturer and tooling manufacturer guidelines for cutting parameters specific to the workpiece material.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.03 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.246 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReach Length\u003c\/strong\u003e: 1.125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 45 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePitch\u003c\/strong\u003e: Coarse\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Helical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Configuration\u003c\/strong\u003e: Single End\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: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\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 (Bright)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Non-Ferrous Metal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: 0.0000 to -0.0020 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: h6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 2043\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 pounds\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: 20430300\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51727365177650,"sku":"20430300","price":80.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ffbbd95ac66ebe58c06a62332f5254bd.jpg?v=1788676769","url":"https:\/\/voomisupply.com\/products\/osg-20430300-corner-radius-end-mill-1-4-in-3-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}