{"product_id":"accupro-12178967-square-end-mill-3-16-in-4-flute-carbide","title":"Accupro 12178967 Square End Mill 3\/16 in 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12178967 is a 4-flute solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. Built from micrograin carbide stock, it carries a nACRo (nano-AlCrO) coating that extends tool life in demanding cut conditions including hardened steels and cast iron. The cutter measures 0.1875 inches in diameter with a 0.625-inch length of cut and a 2-inch overall length. The 40-degree helix angle promotes efficient chip evacuation and reduces cutting forces. Right-hand cut and right-hand flute geometry are standard. This tool is sized and specified for CNC machining centers and manual knee mills where a small-diameter, short-reach end mill is required.\u003c\/p\u003e\u003cp\u003eThis end mill suits production shops, tool rooms, and maintenance machining operations that require a small-diameter finishing or slotting tool. The centercutting geometry allows plunge entry, enabling ramping, helical interpolation, and direct plunge operations without a pre-drilled pilot hole. The regular length classification makes it the correct choice for standard-depth slots and pockets where extended reach is not needed. Machinists working in aerospace, mold and die, and general job-shop environments will find the nACRo coating particularly useful when cutting abrasive or higher-hardness workpieces.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMicrograin solid carbide construction for rigidity and wear resistance in hard materials\u003c\/li\u003e\n\u003cli\u003enACRo coating provides high-temperature oxidation resistance and extended tool life\u003c\/li\u003e\n\u003cli\u003e40-degree helix angle promotes smooth cutting action and efficient chip flow\u003c\/li\u003e\n\u003cli\u003eCentercutting design allows plunge, ramp, and helical entry operations\u003c\/li\u003e\n\u003cli\u003eRight-hand cut with right-hand spiral flute — standard orientation for conventional CNC setups\u003c\/li\u003e\n\u003cli\u003eTight mill diameter tolerance of +0.000 \/ -0.002 inches ensures consistent slot width\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style solid carbide square end mill suitable for standard 3\/16-inch collets, ER collet chucks, and end mill holders used in CNC machining centers and manual milling machines.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes must be performed with the spindle powered off and the machine in a safe, locked-out state. Secure the shank fully within the holder to the recommended gauge-line depth, and verify runout with a dial indicator before production cuts. Consult the machine tool and holder manufacturer specifications for appropriate clamping torque on set screws or collet nuts — do not over-torque. Follow shop safety procedures and applicable OSHA machining standards when handling carbide cutting tools.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 3\/16 inch (0.1875 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 5\/8 inch (0.625 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/16 inch (0.1875 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Micrograin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: nACRo\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\u003eLength Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.029 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: 12178967\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51731953877298,"sku":"12178967","price":38.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2c09ac875f10b05eb2fca87f2e5ea1be.jpg?v=1788737171","url":"https:\/\/voomisupply.com\/products\/accupro-12178967-square-end-mill-3-16-in-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}