{"product_id":"accupro-12276820-square-end-mill-0-043-in-4-flute-carbide","title":"Accupro 12276820 Square End Mill 0.043 in 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 12276820 is a solid carbide square end mill designed for precision milling operations in metal, composites, and engineered plastics. With a 0.043-inch cutting diameter and a 0.129-inch length of cut, this tool is built for tight-tolerance work in small-feature applications. The four-flute, right-hand spiral geometry with a 30-degree helix angle promotes efficient chip evacuation while maintaining a clean, stable cut. The bright, uncoated finish makes it well-suited for materials where coating adhesion is unnecessary or where regrinding is anticipated. Machinists and tool-and-die professionals rely on this class of end mill for intricate slot milling, profiling, and plunge operations on CNC machining centers and manual mills.\u003c\/p\u003e\u003cp\u003eThis end mill is used in precision machining environments where small-diameter tooling is required. Its 0.125-inch shank diameter fits standard collet chucks and ER-series tool holders commonly found in CNC vertical machining centers. The 1.5-inch overall length keeps the tool rigid, reducing deflection during fine-detail cuts in die cavities, mold features, and miniature components. It is appropriate for both prototype shops and production environments handling small, intricate workpieces that require repeatable accuracy.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.043-inch cutting diameter for micro and small-feature milling\u003c\/li\u003e\n\u003cli\u003eSolid carbide micrograin construction for rigidity and wear resistance\u003c\/li\u003e\n\u003cli\u003eFour-flute, right-hand spiral flute configuration for efficient chip removal\u003c\/li\u003e\n\u003cli\u003e30-degree helix angle balances cutting forces and surface finish quality\u003c\/li\u003e\n\u003cli\u003eCentercutting design allows direct plunge entry into the workpiece\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish suitable for regrinding and non-ferrous or ferrous applications where coating is not required\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard 0.125-inch collet chucks and ER-series tool holders on CNC machining centers and manual mills requiring a square-end, single-end carbide end mill in this diameter range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist following shop safety protocols. Ensure the spindle is fully stopped and the machine is powered down or placed in an e-stop state before changing tooling. Seat the shank fully and evenly in the collet to the recommended grip depth to minimize runout and prevent pullout under cutting loads. Verify collet condition and holder concentricity before use, as worn holders significantly reduce tool life at this diameter.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.043 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.0000 \/ -0.0010 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.129 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.125 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 \/ -0.0003 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 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\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: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single End\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\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\u003ePackage Dimensions\u003c\/strong\u003e: 3.75 x 0.75 x 0.75 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: 12276820\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51752927625522,"sku":"12276820","price":26.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/067bf2534ce97ad0dda5a984672f4f11.jpg?v=1788931199","url":"https:\/\/voomisupply.com\/products\/accupro-12276820-square-end-mill-0-043-in-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}