{"product_id":"helical-solutions-86758-corner-radius-end-mill-3-16-in-5-flute","title":"Helical Solutions 86758 Corner Radius End Mill 3\/16 in 5 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HELICAL SOLUTIONS 86758 is a 5-flute, solid carbide corner radius end mill designed for high-performance milling in demanding materials. It features a 3\/16 inch (0.1875 inch) mill diameter, a 7\/32 inch (0.2188 inch) length of cut, and a 2.5 inch overall length. The Tplus PVD coating provides wear resistance suited for cutting stainless steel, high-temperature alloys, and hardened steel. Variable index flute spacing reduces harmonic vibration, improving surface finish and tool life. The centercutting geometry allows plunge entry, and the extended reach design with a 1-1\/8 inch reach length accommodates deeper cavity work. Installed by machinists and toolroom professionals on CNC milling equipment.\u003c\/p\u003e\n\u003cp\u003eThe 86758 is built for roughing and finishing operations in stainless steel, high-temperature alloys (such as Inconel and titanium), and hard materials up to approximately 65 HRC depending on application parameters. The long-length, extended-reach configuration makes it suitable for mold and die work, aerospace component machining, and medical part production where deep pockets or restricted-access features require a slender neck profile. The 0.0300 inch corner radius reduces stress concentration at the cutting edge and improves part corner geometry in precision cavity milling. High precision toolholders are recommended for this end mill.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5-flute variable index geometry reduces chatter and improves surface finish\u003c\/li\u003e\n  \u003cli\u003eTplus PVD coating rated for stainless steel, high-temperature alloys, and hardened steel\u003c\/li\u003e\n  \u003cli\u003e0.0300 inch corner radius with tolerance of -0.0020 to 0.0020 inch\u003c\/li\u003e\n  \u003cli\u003eCentercutting design allows direct plunge milling\u003c\/li\u003e\n  \u003cli\u003eExtended reach with 1-1\/8 inch reach length and 0.1780 inch neck diameter for deep cavity access\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, right-hand spiral flute, straight-cylindrical shank for standard ER and hydraulic toolholders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with high precision toolholders. The 3\/16 inch straight-cylindrical shank (h6 tolerance) is compatible with standard ER collet chucks, shrink-fit holders, and hydraulic chucks accepting 3\/16 inch shank diameters.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and tool changes must be performed with the machine spindle fully stopped and locked out per facility safety procedures. Seat the shank fully and evenly in a high precision toolholder to maintain the 0.0005 inch maximum TIR specification. Inspect the cutting edges and corner radius for chips or wear before each use, as carbide end mills in hard materials are sensitive to interrupted cuts and thermal shock. Flood coolant or minimum quantity lubrication (MQL) is recommended where the machine setup permits, even though this tool does not feature through-coolant capability.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/16 inch (0.1875 inch)\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: 7\/32 inch (0.2188 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\u003eReach Length\u003c\/strong\u003e: 1-1\/8 inch (1.1250 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.1780 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/16 inch (0.1875 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: h6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0300 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: -0.0020 to 0.0020 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: -0.0020\/0.0000 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length Tolerance\u003c\/strong\u003e: -0.0620\/0.0620 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum TIR\u003c\/strong\u003e: 0.0005 inch\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: Tplus (PVD)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Corner Radius\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\u003eFlute Type\u003c\/strong\u003e: Spiral\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\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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Stainless Steel; High-Temperature Alloy; Hardened Steel\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\u003eSeries\u003c\/strong\u003e: HEV-RN-5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 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: HELICAL SOLUTIONS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 86758\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELICAL SOLUTIONS","offers":[{"title":"Default Title","offer_id":51749836751154,"sku":"86758","price":83.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cabcc75ec22e9a3a59303516f18840cb_ee89e2f3-8f16-4538-bf8e-4bb9aa46b3ef.jpg?v=1788911078","url":"https:\/\/voomisupply.com\/products\/helical-solutions-86758-corner-radius-end-mill-3-16-in-5-flute","provider":"Voomi Supply","version":"1.0","type":"link"}