{"product_id":"accupro-2500461-square-end-mill-1-4-in-3-flute-carbide-zrn","title":"Accupro 2500461 Square End Mill 1\/4 in 3 Flute Carbide Zrn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 2500461 is a solid carbide square end mill designed for precise material removal in metal cutting, mold making, and general machining applications. It features a 1\/4 inch cutting diameter with a 3\/4 inch length of cut and a 4 inch overall length. The three-flute spiral geometry combined with a 37-degree helix angle promotes efficient chip evacuation and reduces cutting forces. A zirconium nitride (ZrN) coating improves surface hardness and wear resistance, extending tool life in demanding materials. The micrograin carbide substrate provides the rigidity needed for tight-tolerance work. This tool is centercutting, allowing both plunge and ramp entry. It is sized for use in CNC machining centers and manual mills.\u003c\/p\u003e\n\u003cp\u003eThis end mill suits production and job shop environments running ferrous and non-ferrous metals, plastics, and composites. The 1\/4 inch shank diameter fits standard ER collets, end mill holders, and set-screw-style tool holders common in vertical machining centers. The right-hand cut and right-hand flute configuration is the standard orientation for conventional and climb milling passes. With no chipbreaker and no variable helix, the geometry is straightforward to program and apply in general-purpose roughing and finishing cuts at shallow to moderate depths of cut within the rated length of cut range.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid micrograin carbide construction for rigidity and edge retention\u003c\/li\u003e\n  \u003cli\u003eZrN coating increases surface hardness and reduces tool wear in abrasive materials\u003c\/li\u003e\n  \u003cli\u003e37-degree helix angle promotes smooth chip flow and reduced cutting force\u003c\/li\u003e\n  \u003cli\u003eCentercutting design allows direct plunge entry without pre-drilling\u003c\/li\u003e\n  \u003cli\u003eThree-flute spiral configuration balances chip clearance with surface finish quality\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut and right-hand flute for standard CNC and manual mill setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 1\/4 inch shank end mill compatible with ER collet chucks, shrink-fit holders, and set-screw end mill holders used in CNC vertical machining centers and manual knee mills.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or CNC tooling technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Seat the shank to the minimum insertion depth recommended for the holder type being used, and verify runout with a dial indicator before production cutting. Do not exceed the rated length of cut range when programming axial depth of cut.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1\/4 inch (0.2500 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 3\/4 inch (0.75 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut Range\u003c\/strong\u003e: 0.7000 - 0.8000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/4 inch (0.25 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4 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\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\u003eCentercutting\u003c\/strong\u003e: Yes\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: 0.13 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\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: 2500461\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51736281743666,"sku":"2500461","price":101.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/de1df4010f711fbb211d9dec80cdf4b6.jpg?v=1788776974","url":"https:\/\/voomisupply.com\/products\/accupro-2500461-square-end-mill-1-4-in-3-flute-carbide-zrn","provider":"Voomi Supply","version":"1.0","type":"link"}