{"product_id":"accupro-310987-corner-radius-end-mill-5-8-in-4-flute","title":"Accupro 310987 Corner Radius End Mill 5\/8 in 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 310987 is a solid carbide corner radius end mill designed for precision milling operations in ferrous and non-ferrous materials. It features a 5\/8-inch diameter with a 0.030-inch corner radius and carries an AlCrTiN coating for elevated heat resistance and extended tool life in high-speed applications. The 4-flute, right-hand spiral configuration with a 38-degree helix promotes efficient chip evacuation and smooth surface finish. With a 6-inch overall length and a 4.125-inch reach, this extended-reach end mill handles deep-pocket and hard-to-reach features that standard-length tools cannot access. It is centercutting, allowing plunge entry, and is built from micrograin carbide stock for edge integrity under demanding cutting conditions.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for moldmaking, die work, aerospace components, and general precision machining where a corner radius profile is required to reduce stress concentrations at the base of milled features. The extended reach and reduced neck diameter of 0.593 inches make it appropriate for deep-cavity work in vertical and horizontal machining centers. It is a single-end tool intended for CNC milling applications requiring consistent corner geometry and reliable coating performance at elevated spindle speeds.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAlCrTiN coating for high-temperature resistance and extended tool life\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide construction for sharp, durable cutting edges\u003c\/li\u003e\n\u003cli\u003eExtended reach of 4.125 inches with reduced neck for deep-cavity access\u003c\/li\u003e\n\u003cli\u003e0.030-inch corner radius reduces stress risers and improves surface finish at pocket floors\u003c\/li\u003e\n\u003cli\u003eVariable index flute spacing reduces harmonic chatter during cuts\u003c\/li\u003e\n\u003cli\u003eCentercutting design allows direct plunge entry without pre-drilling\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard tooling option for CNC vertical and horizontal machining centers accepting a 5\/8-inch straight shank end mill.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC operator. Secure the shank in a collet chuck or end mill holder rated for the shank diameter before powering the spindle. Verify tool runout with a dial indicator before cutting to protect both the workpiece and the cutting edge. Consult the machine tool manufacturer specifications and applicable shop safety procedures when setting spindle speeds and feed rates.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.625 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: 0.750 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 5\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.030 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReach Length\u003c\/strong\u003e: 4.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.593 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 38 degrees\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\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Micrograin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlCrTiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\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\u003eExtended Reach\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\u003eSeries\u003c\/strong\u003e: HS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.13 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: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 310987\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51733369815346,"sku":"310987","price":371.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/86703cf198c6ff4b0cc391d70fdafb82.jpg?v=1788754796","url":"https:\/\/voomisupply.com\/products\/accupro-310987-corner-radius-end-mill-5-8-in-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}