{"product_id":"accupro-312979-square-end-mill-3-16-in-2-flute-carbide-zrn","title":"Accupro 312979 Square End Mill 3\/16 in 2 Flute Carbide Zrn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 312979 is a single-end, square-profile carbide end mill designed for precision milling operations in metalworking and machining applications. Built from micrograin solid carbide and coated with zirconium nitride (ZrN), it delivers hardness and heat resistance suited for cutting ferrous and non-ferrous materials. The 3\/16-inch diameter cutting edge pairs with a 45-degree helix angle and spiral flute geometry, promoting efficient chip evacuation and smooth surface finishes. With a 5\/8-inch length of cut and 2-1\/2-inch overall length, this tool fits standard CNC machining centers and manual mills. Licensed machinists and tool-and-die professionals are the primary users.\u003c\/p\u003e\u003cp\u003eThis end mill is intended for slotting, profiling, and peripheral milling in precision shop environments. The 2-flute design leaves more room for chip clearance, making it well suited for softer metals, plastics, and other materials where chip packing is a concern. The right-hand cutting and right-hand flute direction are standard for conventional CNC and manual milling setups. The regular-length classification and 3\/16-inch shank diameter fit standard collets and toolholders without extended reach adapters.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMicrograin solid carbide construction for wear resistance and dimensional stability\u003c\/li\u003e\n\u003cli\u003eZrN coating reduces friction and extends tool life in moderate-heat cutting conditions\u003c\/li\u003e\n\u003cli\u003e45-degree helix angle promotes aggressive chip flow and smooth cutting action\u003c\/li\u003e\n\u003cli\u003eCenter-cutting capability allows direct plunge entry without pre-drilling\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand spiral flute direction for standard spindle setups\u003c\/li\u003e\n\u003cli\u003eMill diameter tolerance of plus 0.000 \/ minus 0.002 inches for consistent fitment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-fit tooling option for standard 3\/16-inch collets and toolholders used in CNC machining centers and manual vertical mills.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed by a qualified machinist with the spindle fully stopped and machine power locked out per shop safety procedures. Ensure the collet and toolholder are clean and within spec before seating the shank; the shank diameter tolerance is plus 0.0001 \/ minus 0.0004 inches. Do not exceed the rated depth of cut for the flute length, and confirm runout with a dial indicator after clamping. Follow the tool manufacturer and machine OEM guidelines for feeds, speeds, and coolant application.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/16 inches (0.1875 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 5\/8 inches (0.625 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-1\/2 inches (2.5 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/16 inches (0.1875 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\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide (Micrograin)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: ZrN (Zirconium Nitride)\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\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\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\u003eMill Diameter Tolerance\u003c\/strong\u003e: plus 0.000 \/ minus 0.002 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: plus 0.0001 \/ minus 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\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: 312979\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51728669081906,"sku":"312979","price":46.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5ca403d5c840156c39f7bd6384a21ea4.jpg?v=1788694679","url":"https:\/\/voomisupply.com\/products\/accupro-312979-square-end-mill-3-16-in-2-flute-carbide-zrn","provider":"Voomi Supply","version":"1.0","type":"link"}