{"product_id":"harvey-tool-72820-c3-corner-radius-end-mill-3-8-in-4-flute","title":"Harvey Tool 72820-C3 Corner Radius End Mill 3\/8 in 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HARVEY TOOL 72820-C3 is a solid carbide corner radius end mill designed for precision milling of steel, stainless steel, cast iron, and non-ferrous metals. It carries a 0.5 mm (0.0200 inch) corner radius with a tolerance of +0.0010 to -0.0010 inches, delivering consistent edge geometry on finish and roughing passes alike. The 4-flute, right-hand helical configuration with a 30-degree helix angle promotes efficient chip evacuation and surface finish quality. An AlTiN PVD coating extends tool life in abrasive and high-temperature cutting conditions. This is a single-end, straight-cylindrical shank tool sized for miniature and close-tolerance machining work performed by machinists and CNC mill operators.\u003c\/p\u003e\n\u003cp\u003eThis end mill fits applications in job shops, tool rooms, and production environments where tight-radius blending and corner geometry control are required. Its stub and standard length classification makes it well suited for rigidity-critical setups where reach is limited. It is appropriate for slotting, profiling, and contouring operations in steel, stainless steel, cast iron, composites, and non-ferrous metals. The 3\/8 inch diameter and 1 inch length of cut allow access to moderate-depth features while maintaining deflection control. Compatible toolholders include standard 3\/8 inch straight-shank collet chucks and end mill holders.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and wear resistance in ferrous and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003eAlTiN PVD coating rated for high-temperature cutting environments including steel and stainless steel\u003c\/li\u003e\n  \u003cli\u003e0.5 mm corner radius with tight tolerance of +0.0010 to -0.0010 inches for consistent edge geometry\u003c\/li\u003e\n  \u003cli\u003e4-flute, right-hand helical flute design supports both roughing and finishing material removal\u003c\/li\u003e\n  \u003cli\u003eCenter-cutting capable, allowing plunge entry into the workpiece\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical 3\/8 inch shank fits standard collet and end mill holder tooling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard 3\/8 inch straight-shank toolholders and collet chucks on CNC machining centers and manual mills. Suitable for primary workpiece materials coded P (Steel), M (Stainless Steel), K (Cast Iron), N (Non-Ferrous Metal), and O (Non-ISO) per ISO material classification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist following standard toolholder torque and runout procedures for solid carbide end mills. Verify spindle and toolholder cleanliness before seating the shank to prevent runout-induced chipping. Confirm that cutting parameters  -  speed, feed, and depth of cut  -  are appropriate for the workpiece material and machine rigidity before engaging the cut. Do not use this tool beyond its stated length-of-cut depth without evaluating deflection and tool overhang.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/8 inch (0.3750 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inch (0.3750 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.5 mm (0.0200 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: +0.0010 to -0.0010 inches\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\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 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\u003eSingle or Double End\u003c\/strong\u003e: Single End\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlTiN (PVD)\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\u003eMaterial Removal Type\u003c\/strong\u003e: Roughing and Finishing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Steel, Stainless Steel, Cast Iron, Non-Ferrous Metal, Composite\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Miniature End Mills - Corner Radius - Stub and Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.14 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\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: HARVEY TOOL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 72820-C3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HARVEY TOOL","offers":[{"title":"Default Title","offer_id":51740571271474,"sku":"72820-C3","price":101.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fe9dfb4bd777927aee3a1c807088ea9b_a730de8b-e1e1-46f4-9d92-380a868995c0.jpg?v=1788826016","url":"https:\/\/voomisupply.com\/products\/harvey-tool-72820-c3-corner-radius-end-mill-3-8-in-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}