{"product_id":"accupro-12178616-square-end-mill-5-8-in-3-flute-solid-carbide","title":"Accupro 12178616 Square End Mill 5\/8 in 3 Flute Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12178616 is a solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. It features a 5\/8 inch cutting diameter, a 2.5 inch length of cut, and a 6 inch overall length, placing it in the long-reach category for applications requiring extended projection from the spindle. The 3-flute geometry with a 40-degree helix angle promotes efficient chip evacuation and balanced cutting forces. A ZrN (zirconium nitride) coating provides surface hardness and thermal resistance. The micrograin carbide substrate supports feeds and speeds appropriate for high-productivity roughing and finishing passes on CNC machining centers and manual mills.\u003c\/p\u003e\u003cp\u003eThis end mill suits job shops, tool rooms, and production environments where a long-reach 5\/8 inch tool is needed to access deep pockets, slots, or stepped features. The centercutting design allows plunge entry, making it practical for pocketing operations without requiring a pre-drilled starter hole. Right-hand cut and right-hand spiral flute orientation is standard for conventional spindle setups. The spiral flute geometry without a chipbreaker or variable index makes it well suited to finishing and semi-finishing passes where surface finish consistency matters.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid micrograin carbide construction for rigidity and edge retention in demanding cuts\u003c\/li\u003e\n\u003cli\u003eZrN coating adds surface hardness and reduces heat buildup at the cutting edge\u003c\/li\u003e\n\u003cli\u003e40-degree helix angle promotes smooth chip flow and reduced cutting forces\u003c\/li\u003e\n\u003cli\u003eCentercutting capability allows direct plunge entry into workpiece material\u003c\/li\u003e\n\u003cli\u003eLong-length classification with 2.5 inch LOC enables deep pocket and slot access\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, right-hand flute for standard CNC and manual mill spindle compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-selection solid carbide square end mill for 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 tooling technician. Secure the shank in a collet or end mill holder rated for the shank diameter and confirm runout with a dial indicator before cutting. Ensure the machine spindle is fully stopped and locked out before inserting or removing the tool. Do not exceed the tool manufacturer's recommended depth-of-cut or feed rate for the specific workpiece material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.625 inches (5\/8 inch)\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\u003eNumber of Flutes\u003c\/strong\u003e: 3\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\u003c\/strong\u003e: ZrN (Zirconium Nitride)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.625 inches (5\/8 inch)\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\u003eOverall Length\u003c\/strong\u003e: 6.0 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\u003eLength Type\u003c\/strong\u003e: Long\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\u003eWeight\u003c\/strong\u003e: 0.6 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: 12178616\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51755190714674,"sku":"12178616","price":210.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/054ceb9a9c7427b7787ccc345ddb7701.jpg?v=1788952013","url":"https:\/\/voomisupply.com\/products\/accupro-12178616-square-end-mill-5-8-in-3-flute-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}