{"product_id":"accupro-12178821-square-end-mill-5-8-in-2-flute-solid-carbide","title":"Accupro 12178821 Square End Mill 5\/8 in 2 Flute Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12178821 is a 2-flute solid carbide square end mill designed for precision milling in metalworking and machining applications. Built from micrograin solid carbide, it delivers consistent edge retention and wear resistance across a range of ferrous and non-ferrous materials. The nACRo coating reduces friction and extends tool life in high-speed cutting conditions. With a 40-degree helix angle and right-hand spiral flute geometry, the tool promotes efficient chip evacuation and smooth cutting action. The centercutting design allows for direct plunge entry into the workpiece. This end mill suits CNC machining centers and manual mills operated by machinists and tool-and-die professionals.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for slotting, profiling, and contouring operations on machining centers in job shop, production, and maintenance environments. The 5\/8-inch diameter and 2-1\/8-inch length of cut make it a capable choice for moderate-depth passes in steel, stainless, cast iron, and aluminum. Its solid carbide construction and nACRo finish make it well-matched to dry cutting or minimum-quantity lubrication setups where heat and abrasion resistance are priorities.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMicrograin solid carbide construction for superior hardness and edge retention\u003c\/li\u003e\n\u003cli\u003enACRo finish reduces cutting friction and extends tool life in high-heat applications\u003c\/li\u003e\n\u003cli\u003e40-degree helix angle promotes smooth chip flow and reduced chatter\u003c\/li\u003e\n\u003cli\u003eCentercutting capable — allows direct plunge milling without pre-drilling\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand flute geometry compatible with standard CNC spindle direction\u003c\/li\u003e\n\u003cli\u003eConsistent tolerances: mill diameter +0.000 \/ -0.002 inches, shank diameter -0.0001 \/ -0.0004 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and standard-fitment end mill for 5\/8-inch collets and end mill holders on CNC machining centers and manual vertical mills accepting a 5\/8-inch straight shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC operator. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before securing the shank. Use an appropriate collet or end mill holder rated for the 5\/8-inch shank diameter and torque the retention mechanism per the tool holder manufacturer specifications. Verify runout with a dial indicator after installation before beginning a cutting pass.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 5\/8 inches (0.6250 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\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\u003eFinish\u003c\/strong\u003e: nACRo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 2-1\/8 inches (2.1250 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 5\/8 inches (0.6250 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4-5\/8 inches\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\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: 0.25 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: 12178821\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51733137916210,"sku":"12178821","price":326.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e5e0db57dc016c6453b0eb12067c5293_37e099f8-4184-4b60-a8ff-433ba5ca994f.jpg?v=1788751751","url":"https:\/\/voomisupply.com\/products\/accupro-12178821-square-end-mill-5-8-in-2-flute-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}