{"product_id":"accupro-12177391-corner-radius-end-mill-3-8-in-7-flute","title":"Accupro 12177391 Corner Radius End Mill 3\/8 in 7 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12177391 is a 7-flute, solid carbide corner radius end mill designed for high-performance milling in demanding production environments. It features a 3\/8 inch mill diameter, a 0.03 inch corner radius, and a 1\/2 inch length of cut. The AlTiN coating provides heat and oxidation resistance, making it well-suited for dry or high-speed machining of hardened steels, stainless alloys, and other difficult-to-machine materials. A micrograin carbide substrate adds wear resistance and edge retention across extended tool life. This is a single-end, centercutting tool with right-hand flute direction and right-hand cutting direction, and it supports extended reach applications with a 3-1\/8 inch reach length.\u003c\/p\u003e\u003cp\u003eThis end mill is appropriate for precision slot milling, profiling, and contouring operations where a controlled corner radius is required to reduce stress concentrations or meet part geometry specs. The 7-flute configuration and variable index geometry help minimize chatter and improve surface finish at higher feed rates. It is typically used in CNC machining centers in tool and die, aerospace, medical device, and general precision manufacturing environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e7-flute variable index design reduces chatter and improves surface finish\u003c\/li\u003e\n\u003cli\u003eAlTiN coating for elevated heat resistance in dry and high-speed machining\u003c\/li\u003e\n\u003cli\u003eMicrograin solid carbide substrate for enhanced wear resistance and edge retention\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows direct plunge entry\u003c\/li\u003e\n\u003cli\u003eExtended reach configuration with 3-1\/8 inch reach length and 0.355 inch neck diameter\u003c\/li\u003e\n\u003cli\u003eCorner radius tolerance of plus or minus 0.0015 inches for consistent part geometry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNC machining centers accepting a 3\/8 inch shank diameter. Suited for milling hardened steels, stainless alloys, and similar difficult-to-machine materials where AlTiN coating performance is required.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle and tool holder are fully powered down and locked out before changing tooling. Verify tool holder runout and collet condition before securing the shank to maintain dimensional accuracy. Follow the machine manufacturer and tooling manufacturer feed and speed recommendations for the specific workpiece material and coating type.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000000 \/ -0.002500 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1\/2 inch (0.3750 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0300 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius Tolerance\u003c\/strong\u003e: plus or minus 0.0015 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: 3\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 \/ -0.0004 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.355 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReach Length\u003c\/strong\u003e: 3-1\/8 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 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\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\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\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide, Micrograin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.346 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\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: 12177391\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51754852024626,"sku":"12177391","price":168.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/61f5c7a7c95490e42841c77e7659b1e5_46372b68-8585-4a1a-b9c9-055239ba00cb.jpg?v=1788949221","url":"https:\/\/voomisupply.com\/products\/accupro-12177391-corner-radius-end-mill-3-8-in-7-flute","provider":"Voomi Supply","version":"1.0","type":"link"}