{"product_id":"helical-solutions-86429-high-feed-end-mill-0-25-in-5-flute","title":"Helical Solutions 86429 High-feed End Mill 0.25 in 5 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HELICAL SOLUTIONS 86429 is a solid carbide high-feed end mill engineered for aggressive material removal in demanding milling applications. Built on a 5-flute, variable-pitch geometry with a chipbreaker profile, it delivers high metal removal rates while reducing chatter and heat buildup. The Tplus coating provides enhanced wear resistance and lubricity suited for ferrous and high-strength alloys. Coolant-through design channels fluid directly to the cutting zone, extending tool life and improving chip evacuation in deep-cavity and high-feed operations. This is a single-end tool with a 0.25-inch mill diameter and a 0.75-inch length of cut.\u003c\/p\u003e\n\u003cp\u003eThis end mill is suited for high-feed milling and high-efficiency milling (HEM) strategies in CNC machining centers. The combination feed and HEM capability makes it applicable in aerospace, die-mold, and general precision machining environments where cycle time reduction and tool longevity are critical. The 0.0314-inch program radius supports the shallow axial depth, high radial engagement toolpaths typical in modern CAM-driven high-feed cycles. Machinists and CNC programmers working with hardened steels, stainless, and tool steels are the primary users.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5-flute variable-pitch design reduces harmonic vibration and chatter during high-feed passes\u003c\/li\u003e\n  \u003cli\u003eChipbreaker geometry improves chip control and prevents re-cutting in deep slotting or ramping operations\u003c\/li\u003e\n  \u003cli\u003eTplus coating delivers elevated hardness and oxidation resistance for extended tool life in ferrous materials\u003c\/li\u003e\n  \u003cli\u003eCoolant-through construction directs cutting fluid to the tip for thermal management and chip flushing\u003c\/li\u003e\n  \u003cli\u003eCombination high-feed and HEM profile supports multiple toolpath strategies from a single tool\u003c\/li\u003e\n  \u003cli\u003eSolid carbide substrate provides rigidity and dimensional stability at high spindle speeds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003ePart of the HELICAL SOLUTIONS Feed Mills - Combination Feed and HEM - 5 Flute - Chipbreaker - Variable Pitch - Coolant Through series. Designed for use with standard 0.25-inch diameter tool holders including ER collet chucks, hydraulic chucks, and shrink-fit holders compatible with a 0.25-inch shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and operation of this tool should be performed by qualified CNC machinists familiar with high-feed and HEM toolpath programming. Confirm tool holder runout is within acceptable limits before operation, as excessive runout accelerates wear on carbide tooling. Ensure coolant-through capability is active at the spindle before running high-feed cycles. Follow the tool manufacturer feed and speed recommendations and do not exceed the rated program radius when programming axial depth of cut.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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\u003eProgram Radius\u003c\/strong\u003e: 0.0314 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.75 inches\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\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Tplus\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Single End\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant\u003c\/strong\u003e: Coolant Through\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HELICAL SOLUTIONS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 86429\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HELICAL SOLUTIONS","offers":[{"title":"Default Title","offer_id":51743266275634,"sku":"86429","price":199.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ae184d52c54218141f01363a939e96aa.jpg?v=1788844729","url":"https:\/\/voomisupply.com\/products\/helical-solutions-86429-high-feed-end-mill-0-25-in-5-flute","provider":"Voomi Supply","version":"1.0","type":"link"}