{"product_id":"accupro-314801-square-end-mill-7-16-in-3-flute-carbide-zrn","title":"Accupro 314801 Square End Mill 7\/16 in 3 Flute Carbide Zrn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 314801 is a solid carbide square end mill designed for precision milling operations in metal, alloy, and composite workpieces. The 7\/16-inch diameter cutter features three flutes with a 37-degree helix angle, a right-hand cutting direction, and a ZrN (zirconium nitride) coating for extended tool life and heat resistance. The micrograin carbide substrate provides edge stability at elevated feeds and speeds. This tool is single-end and centercutting, making it capable of plunge entry. Machinists and toolroom operators use this end mill in CNC machining centers and manual mills for profiling, slotting, and peripheral milling applications.\u003c\/p\u003e\u003cp\u003eThis end mill suits applications in job shops, production facilities, and toolroom environments where tight tolerances and consistent surface finish are required. The 2-inch length of cut handles moderate-depth passes on ferrous and non-ferrous materials. The ZrN coating performs well in dry or minimal-lubrication cutting conditions. The 4-inch overall length and 7\/16-inch straight shank fit standard collet chucks and end mill holders across a wide range of milling machines. Right-hand flute geometry matches conventional right-hand spindle rotation.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e7\/16-inch mill diameter with micrograin solid carbide construction for rigidity and wear resistance\u003c\/li\u003e\n\u003cli\u003eZrN coating reduces friction and extends tool life in high-speed milling\u003c\/li\u003e\n\u003cli\u003e37-degree helix angle promotes efficient chip evacuation and smooth cutting action\u003c\/li\u003e\n\u003cli\u003eCentercutting design allows direct plunge entry without a pre-drilled hole\u003c\/li\u003e\n\u003cli\u003eThree-flute geometry balances chip clearance and tool strength\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand spiral for use with standard CNC and manual mill spindles\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard replacement or direct-use solid carbide square end mill for 7\/16-inch collet chucks, ER collet systems, and end mill holders accepting a 7\/16-inch straight shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes must be performed with the machine spindle fully powered down and locked. Ensure the collet or holder bore is clean and free of debris before seating the shank to maintain runout tolerances. Shank diameter tolerance is +0.0001\/-0.0004 inches, so inspect the holder for wear that could affect grip concentricity. A licensed machinist or qualified CNC operator should verify speeds, feeds, and depth of cut before engaging the workpiece.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 7\/16 inches (0.4375 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 7\/16 inches (0.4375 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 37 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: ZrN (Zirconium Nitride)\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\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle End\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000\/-0.005 inches\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\u003eWeight\u003c\/strong\u003e: 0.27 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: 314801\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51742530634034,"sku":"314801","price":250.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5a0117fe56f7262adc57f4cf99ab052e.jpg?v=1788838013","url":"https:\/\/voomisupply.com\/products\/accupro-314801-square-end-mill-7-16-in-3-flute-carbide-zrn","provider":"Voomi Supply","version":"1.0","type":"link"}