{"product_id":"accupro-12181721-square-end-mill-1-4-in-2-flute-carbide-altin","title":"Accupro 12181721 Square End Mill 1\/4 in 2 Flute Carbide Altin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 12181721 is a solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. It features a 1\/4 inch cutting diameter, a 1-1\/8 inch length of cut, and a 3 inch overall length on a 1\/4 inch shank. The AlTiN coating improves heat resistance and extends tool life at elevated cutting temperatures. A 40-degree helix angle and spiral flute geometry promote efficient chip evacuation and reduce cutting forces. With 2 flutes and a centercutting design, this end mill handles slotting, profiling, and plunge operations. Machinists and CNC operators in job shop and production environments are the primary users.\u003c\/p\u003e\n\u003cp\u003eThis end mill suits applications requiring a long length of cut relative to diameter, making it useful for deeper pockets and stepped features. It is classified as a long-length style with a length-of-cut range of 1.0 to 1.25 inches. The right-hand cut and right-hand flute configuration is standard for conventional CNC milling setups. The micrograin carbide substrate supports tight tolerances and consistent edge integrity across repeated passes in hardened and abrasive materials.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid micrograin carbide construction for rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating for high-heat and abrasion-resistant cutting environments\u003c\/li\u003e\n  \u003cli\u003e40-degree helix angle for aggressive chip evacuation and reduced chatter\u003c\/li\u003e\n  \u003cli\u003eCentercutting design enables direct plunge entry into the workpiece\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut and right-hand flute for standard CNC spindle compatibility\u003c\/li\u003e\n  \u003cli\u003eLong-length classification supports deeper pocket and profile work\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-fit replacement for standard 1\/4 inch shank square end mill holders and collets used in CNC machining centers and manual mills with right-hand spindle rotation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or CNC operators. Ensure the spindle and any automatic tool changers are fully stopped and the machine is powered down or placed in a safe tool-change mode before handling. Use a calibrated torque-appropriate collet or end mill holder matched to the 1\/4 inch shank diameter. Inspect the tool seat and collet bore for chips or debris before clamping to maintain runout within the stated shank diameter tolerance.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.2500 inches (1\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 1.1250 inches (1-1\/8 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2500 inches (1\/4 inch)\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\u003eCoating\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 40 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\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Long\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut Range\u003c\/strong\u003e: 1.0000 to 1.2500 inches\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: 0.14 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: 12181721\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51734675718450,"sku":"12181721","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4476835fbd4b236ba7ee544d0e461f7d.jpg?v=1788764751","url":"https:\/\/voomisupply.com\/products\/accupro-12181721-square-end-mill-1-4-in-2-flute-carbide-altin","provider":"Voomi Supply","version":"1.0","type":"link"}