{"product_id":"accupro-311872-square-end-mill-1in-5-flute-solid-carbide","title":"Accupro 311872 Square End Mill 1in 5 Flute Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 311872 is a single-end, 5-flute square end mill engineered for high-performance milling in demanding metalworking applications. Built from micrograin solid carbide and coated with AlTiCrN, it handles elevated cutting temperatures and abrasive workpiece materials without sacrificing edge life. The 1 inch mill diameter pairs with a 2 inch length of cut, a 1 inch shank diameter, and a 38-degree helix angle. Variable index spacing reduces harmonic chatter during aggressive cuts, making it well suited for roughing and finishing passes where tool stability matters. This tool is installed and operated by machinists and CNC programmers in professional shop environments.\u003c\/p\u003e\u003cp\u003eThe 311872 fits standard 1 inch toolholders including end mill holders, shrink-fit chucks, and hydraulic chucks commonly found on vertical and horizontal machining centers. The 4 inch overall length keeps the tool compact enough for general-purpose cavity and profile milling while still reaching typical workpiece depths. Its right-hand cut, right-hand spiral flute configuration makes it compatible with conventional CNC spindle setups. Applications include slotting, profiling, and contouring in ferrous alloys, hardened steels, stainless, and cast iron where AlTiCrN coating performance is an advantage over TiN or TiAlN alternatives at higher surface speeds.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMicrograin solid carbide substrate provides rigidity and wear resistance for hard material milling\u003c\/li\u003e\n\u003cli\u003eAlTiCrN coating extends tool life in high-temperature cutting conditions including dry and near-dry machining\u003c\/li\u003e\n\u003cli\u003e38-degree helix angle promotes smooth chip evacuation and reduces cutting forces on each flute\u003c\/li\u003e\n\u003cli\u003eVariable index flute spacing dampens vibration and chatter during aggressive cuts\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows plunge entry directly into the workpiece\u003c\/li\u003e\n\u003cli\u003eSingle-end design concentrates full substrate mass behind the cutting edge for maximum rigidity\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in 1 inch bore end mill holders, shrink-fit chucks, and hydraulic chucks on CNC machining centers. Part of the ACCUPRO HS series of solid carbide end mills.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\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 mounting or removing the tool. Verify holder bore condition and runout with a dial indicator before use, as excessive runout accelerates edge wear on carbide tooling. Follow the toolholder manufacturer torque specifications when securing set screws or clamping nuts.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1 inch (25.40 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 2 inches (50.80 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 38 degrees\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\u003eEnd Type\u003c\/strong\u003e: Single End\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\u003eVariable Helix\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\u003eExtended Reach\u003c\/strong\u003e: No\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: AlTiCrN\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: 2 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: 311872\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51734308192562,"sku":"311872","price":526.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/70a115fb205e85c9017d08452adf94cf.jpg?v=1788762461","url":"https:\/\/voomisupply.com\/products\/accupro-311872-square-end-mill-1in-5-flute-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}