{"product_id":"accupro-313212-square-end-mill-3-8-in-2-flute-solid-carbide-zrn","title":"Accupro 313212 Square End Mill 3\/8 in 2 Flute Solid Carbide Zrn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 313212 is a 2-flute solid carbide square end mill built for precision milling operations in metal fabrication, toolrooms, and production machining environments. The cutter features a 3\/8-inch mill diameter with a 1-1\/2-inch length of cut and a 4-inch overall length, placing it in the long-series category for extended-reach applications. A 45-degree helix angle promotes aggressive chip evacuation and smooth cutting action. The ZrN (zirconium nitride) coating improves surface hardness and heat resistance, extending tool life in ferrous and non-ferrous materials. This end mill is single-end, right-hand cutting, and manufactured from micrograin carbide for consistent edge integrity across the full depth of cut.\u003c\/p\u003e\n\u003cp\u003eThis tool is suited for slotting, profiling, and peripheral milling operations on machining centers and CNC mills where extended reach is required. The long-series geometry makes it appropriate for deep-pocket work and tall-workpiece setups where a standard-length end mill would not reach. It is typically installed and run by machinists and tool-and-die professionals working in job shops, production facilities, and maintenance machine shops. The centercutting design allows direct plunge entry without a pre-drilled hole.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e3\/8-inch mill diameter with tight tolerance of +0.000 \/ -0.002 inches for accurate slot and profile work\u003c\/li\u003e\n  \u003cli\u003eZrN coating increases surface hardness and thermal resistance, extending tool life in demanding cuts\u003c\/li\u003e\n  \u003cli\u003e45-degree helix angle promotes efficient chip evacuation and reduced cutting forces\u003c\/li\u003e\n  \u003cli\u003eMicrograin solid carbide substrate provides uniform hardness and fracture resistance at the cutting edge\u003c\/li\u003e\n  \u003cli\u003eCentercutting design permits direct plunge milling without a pilot hole\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut and right-hand spiral flute direction for use with standard CNC and manual mill spindles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit cutting tool for CNC machining centers and manual vertical mills accepting a 3\/8-inch straight shank via ER collet, end mill holder, or equivalent toolholding system.\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 the control in a safe state. Secure the 3\/8-inch shank in a clean, properly sized collet or end mill holder and tighten to the toolholder manufacturer's specification. Inspect the cutting edges and coating for chips or damage before mounting. Follow your facility's speeds-and-feeds guidelines for carbide end mills in the material being cut; do not exceed the rated depth of cut for long-series tooling, as extended overhang increases deflection risk.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/8 inches (0.3750 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1-1\/2 inches (1.5 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: 3\/8 inches (0.375 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 45 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: ZrN (Zirconium Nitride)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide, Micrograin Grade\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\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Long Series\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.000 \/ -0.002 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: 0.1 pounds\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: ACCUPRO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 313212\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51738477756722,"sku":"313212","price":120.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4c41039896e2d239c4b7b88ecf818e3e.jpg?v=1788800063","url":"https:\/\/voomisupply.com\/products\/accupro-313212-square-end-mill-3-8-in-2-flute-solid-carbide-zrn","provider":"Voomi Supply","version":"1.0","type":"link"}