{"product_id":"osg-403-2500-square-end-mill-1-4-inch-3-flute-solid-carbide","title":"Osg 403-2500 Square End Mill 1\/4 Inch 3 Flute Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG 403-2500 is a solid carbide square end mill designed for precision milling in metalworking and machining applications. It features a 1\/4 inch cutting diameter, a 3\/4 inch length of cut, and a 2-1\/2 inch overall length. Built from micrograin solid carbide, this tool delivers the rigidity and edge retention needed for consistent performance in ferrous and non-ferrous materials. The 30-degree helix angle promotes smooth chip evacuation and reduces cutting forces. Three flutes provide a balance between chip clearance and surface finish quality. This is a centercutting tool, allowing it to plunge directly into workpiece material.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for general-purpose milling tasks including slotting, profiling, and plunge cutting on CNC machining centers and manual mills. The 1\/4 inch shank diameter fits standard collets and tool holders common to both light-duty and production machining setups. The uncoated finish makes it a reliable choice for applications where coating is not required or where re-sharpening is planned. It is appropriate for use in job shops, toolrooms, and production environments where dimensional accuracy is critical.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMicrograin solid carbide construction for superior hardness and wear resistance\u003c\/li\u003e\n\u003cli\u003e30-degree helix angle promotes efficient chip evacuation and reduced cutting pressure\u003c\/li\u003e\n\u003cli\u003eCentercutting design allows direct plunge entry into material\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand spiral flute configuration\u003c\/li\u003e\n\u003cli\u003eThree-flute geometry balances chip clearance with surface finish\u003c\/li\u003e\n\u003cli\u003eRegular length profile for stable overhang in standard milling operations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard 1\/4 inch shank square end mill compatible with collet chucks, end mill holders, and shrink-fit tool holders accepting 1\/4 inch shank tooling on CNC and manual milling machines.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist following shop safety procedures. Ensure the machine spindle is fully stopped and locked out before changing tooling. Use a properly sized collet or tool holder and tighten to the tool holder manufacturer's specified clamping procedure. Verify runout with a dial indicator after setup to confirm accurate seating before beginning a cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.25 inches (1\/4 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.75 inches (3\/4 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches (2-1\/2 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.25 inches (1\/4 inch)\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\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\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 403\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.15 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: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 403-2500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51730352701746,"sku":"403-2500","price":37.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8eee3098fd0d8f4c39150d2fe99853d8.jpg?v=1788715885","url":"https:\/\/voomisupply.com\/products\/osg-403-2500-square-end-mill-1-4-inch-3-flute-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}