{"product_id":"osg-20556254-corner-radius-end-mill-5-8-in-5-flute-carbide","title":"Osg 20556254 Corner Radius End Mill 5\/8 in 5 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 20556254 is a solid carbide corner radius end mill engineered for demanding metal removal in stainless steel, superalloys, titanium, and hard materials. Built on OSG's Series 2055 platform, it features a 5\/8 inch diameter, a 0.1200 inch corner radius, and five flutes with a variable helix and variable index geometry. The EXO PVD coating provides thermal and wear resistance suited to the high-heat environments generated when cutting difficult alloys. This tool handles both roughing and finishing operations in a single setup, making it a practical choice for machinists and toolroom professionals running CNC mills or machining centers.\u003c\/p\u003e\u003cp\u003eThis end mill is designed for use in CNC milling applications involving stainless steel, superalloys such as Inconel and similar nickel-based materials, titanium, and hardened steels. Its 1-1\/4 inch length of cut and 3-1\/2 inch overall length suit it for medium-depth pocketing, profiling, and contouring operations where corner integrity and surface finish are critical. The center-cutting geometry allows direct plunge entry, and the Weldon flat shank provides positive drive in compatible toolholders.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/8 inch diameter with matching 5\/8 inch Weldon flat shank for secure toolholder engagement\u003c\/li\u003e\n\u003cli\u003e0.1200 inch corner radius reduces stress concentrations and improves edge life at corner transitions\u003c\/li\u003e\n\u003cli\u003eFive-flute variable helix and variable index design dampens chatter and improves chip evacuation\u003c\/li\u003e\n\u003cli\u003eEXO PVD coating rated for stainless steel, superalloys, titanium, and hard materials\u003c\/li\u003e\n\u003cli\u003eCenter-cutting geometry allows direct plunge milling without pre-drilling\u003c\/li\u003e\n\u003cli\u003eUltra fine micrograin carbide substrate supports higher hardness and edge retention\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with standard toolholders accepting a 5\/8 inch Weldon flat shank. Primary workpiece materials include stainless steel, superalloys, titanium, and hard materials per OSG material codes M, S, and H.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed by a qualified machinist with the spindle fully stopped and the machine in a safe, locked-out state. Secure the Weldon flat shank in a compatible toolholder and verify runout before cutting. Follow the machine tool manufacturer's recommended torque procedure for set screws. Confirm cutting parameters — speed, feed, and depth of cut — against OSG Series 2055 application guidelines for the specific workpiece material before production use.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 5\/8 inch (0.6250 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1-1\/4 inches (1.2500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.1200 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3-1\/2 inches (3.5000 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 5\/8 inch (0.6250 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Weldon Flat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Ultra Fine Micrograin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: EXO (PVD)\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\u003eVariable Helix\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Index\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Cutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Removal Type\u003c\/strong\u003e: Roughing and Finishing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Stainless Steel, Superalloys, Titanium, Hard Material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 2055\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: 0.0000 \/ -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\u003eWeight\u003c\/strong\u003e: 0.5 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: 20556254\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51737179980082,"sku":"20556254","price":515.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b7b3e583020e39b7fc5e5bf751b9f298.jpg?v=1788785291","url":"https:\/\/voomisupply.com\/products\/osg-20556254-corner-radius-end-mill-5-8-in-5-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}