{"product_id":"kennametal-6676373-corner-radius-end-mill-1-4-in-4-flute-altin","title":"Kennametal 6676373 Corner Radius End Mill 1\/4 in 4 Flute Altin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 6676373 is a solid carbide corner radius end mill designed for high-performance milling in demanding shop environments. With a 1\/4 inch cutting diameter, a 0.09 inch corner radius, and four flutes in a right-hand spiral configuration, it delivers both roughing and finishing capability in a single tool. The AlTiN (aluminum titanium nitride) PVD coating provides elevated heat resistance and extended tool life when cutting hard or abrasive workpiece materials. The submicron carbide grade substrate adds toughness and edge retention at high feed rates. A 36-degree helix angle promotes efficient chip evacuation and smooth cutting action. Licensed HVAC techs, plumbers, and machinists working in high-production environments will find this tool calibrated for consistent results across steel, stainless steel, cast iron, superalloys, titanium, and hard materials.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for CNC machining centers and manual mills where precision profiling, slotting, and contouring are required. The centercutting geometry allows plunge entry into the workpiece. The straight cylindrical shank at 1\/4 inch diameter fits standard collet chucks, shrink-fit holders, and hydraulic toolholders including the HC 20M through HC 32M hydraulic sleeve series with inch bores and HC-CV Form AD holders. Material applications span steel, stainless steel, cast iron, superalloys and titanium, and hard materials, making this a versatile tool across industries including aerospace, die and mold, and general machining.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.09 inch corner radius reduces stress concentrations and extends part life at milled edges\u003c\/li\u003e\n\u003cli\u003eAlTiN PVD coating for heat resistance and long tool life in hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003eSubmicron carbide grade substrate for improved toughness and edge stability\u003c\/li\u003e\n\u003cli\u003eFour-flute, right-hand, spiral geometry supports both roughing and finishing operations\u003c\/li\u003e\n\u003cli\u003eCentercutting design permits direct plunge entry without pre-drilling\u003c\/li\u003e\n\u003cli\u003e36-degree helix angle promotes chip evacuation and reduces cutting forces\u003c\/li\u003e\n\u003cli\u003eSingle-end configuration with standard-length flute for general-purpose reach requirements\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eCompatible with HC 20M through HC 32M hydraulic sleeves metric with inch bores and HC-CV Form AD toolholders. Fits any standard collet or shrink-fit system accepting a 1\/4 inch straight cylindrical shank. Designed for steel, stainless steel, cast iron, superalloys and titanium, and hard materials per material codes P, M, K, S, and H.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist following the toolholder manufacturer torque and clamping specifications. Verify runout at the toolholder before machining to maintain dimensional accuracy and tool life. Power down and lock out the spindle before inserting or removing the end mill. Do not exceed the toolholder maximum speed rating or the recommended depth-of-cut parameters for the workpiece material being machined.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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: 0.09 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.625 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: 0.9449 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 36 degrees\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: Submicron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Classification\u003c\/strong\u003e: 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\u003eEnd Type\u003c\/strong\u003e: Corner Radius\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\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: Normal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\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\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Index\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\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, Superalloys and Titanium, Hard Material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: H1TE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 0.052 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: KENNAMETAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 6676373\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51741220405554,"sku":"6676373","price":113.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/07a49ed9e00b7aa9b89cab4141d7a4b9_ed4d9980-7640-4420-bfcd-02e50085dc8a.jpg?v=1788830131","url":"https:\/\/voomisupply.com\/products\/kennametal-6676373-corner-radius-end-mill-1-4-in-4-flute-altin","provider":"Voomi Supply","version":"1.0","type":"link"}