{"product_id":"helical-solutions-82551-corner-radius-end-mill-3-8in-5-flute","title":"Helical Solutions 82551 Corner Radius End Mill 3\/8in 5 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HELICAL SOLUTIONS 82551 is a solid carbide, 5-flute corner radius end mill designed for demanding milling operations in steel, cast iron, stainless steel, non-ferrous metals, superalloys, titanium, and hard materials. It carries a 3\/8-inch mill diameter with a 0.1250-inch corner radius and an APLUS PVD coating applied to the carbide substrate. The HEV-5 series uses a variable index geometry and right-hand spiral flutes to reduce chatter and improve surface finish. At 3 inches overall length with a 1-1\/4-inch length of cut, this tool is built for both roughing and finishing passes in a single setup. Licensed machinists and CNC programmers working in job shops, aerospace, and general manufacturing specify this tool for high-precision profiling and contouring work.\u003c\/p\u003e\n\u003cp\u003eThe 82551 is suited for milling ferrous and non-ferrous workpieces in vertical and horizontal machining centers. Its straight-cylindrical 3\/8-inch shank seats in high-precision toolholders such as shrink-fit, hydraulic, or precision collet chucks. The centercutting design allows plunge entry where needed. Variable index pitch reduces harmonic vibration during aggressive cuts in steel and cast iron, making it applicable in both light finish passes and heavier material removal operations. It is a single-end tool with no chipbreaker, intended for standard-reach applications without extended-reach requirements.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and wear resistance in hard and abrasive materials\u003c\/li\u003e\n  \u003cli\u003eAPLUS PVD coating improves heat resistance and tool life in steel and cast iron applications\u003c\/li\u003e\n  \u003cli\u003e5-flute, variable index geometry reduces chatter and supports higher feed rates\u003c\/li\u003e\n  \u003cli\u003e0.1250-inch corner radius with a tight tolerance of -0.0020 to +0.0020 inches\u003c\/li\u003e\n  \u003cli\u003eCentercutting capability allows direct plunge milling without a pre-drilled hole\u003c\/li\u003e\n  \u003cli\u003eRight-hand cutting, right-hand spiral flutes compatible with standard CNC spindle rotation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eRecommended for use with high-precision toolholders. Primary workpiece materials are steel and cast iron; secondary materials include stainless steel, non-ferrous metals, superalloys, titanium, and hard materials. Shank diameter tolerance is h6 for consistent fit in precision collet and shrink-fit systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the tool changer is in a safe state before loading the tool. Seat the straight-cylindrical shank to the full recommended gauge-line depth in a high-precision toolholder and verify TIR does not exceed 0.0005 inches before cutting. Confirm feed rate, spindle speed, and depth of cut settings match the workpiece material and operation type before initiating the program.\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 inches (0.3750 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.1250 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: -0.0020 to +0.0020 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\u003eOverall Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inches (0.3750 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: h6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: -0.0020\/0.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length Tolerance\u003c\/strong\u003e: -0.0620\/+0.0620 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: APLUS (PVD)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HEV-5\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\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\u003ePitch\u003c\/strong\u003e: Variable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable Index\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003eTIR Maximum\u003c\/strong\u003e: 0.0005 inches\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\u003eChipbreaker\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.146 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: HELICAL SOLUTIONS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 82551\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELICAL SOLUTIONS","offers":[{"title":"Default Title","offer_id":51730349490482,"sku":"82551","price":111.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c177c198f98f88cb58c443732cc4a023_07eb5a13-4881-4359-8da1-6347310170ff.jpg?v=1788715819","url":"https:\/\/voomisupply.com\/products\/helical-solutions-82551-corner-radius-end-mill-3-8in-5-flute","provider":"Voomi Supply","version":"1.0","type":"link"}