{"product_id":"osg-hp441-1575-square-end-mill-0-1575-in-4-flute-carbide","title":"Osg HP441-1575 Square End Mill 0.1575 in 4 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG HP441-1575 is a solid carbide square end mill engineered for precision milling in demanding shop environments. This single-end tool features a 0.1575 inch diameter cutting head, a 0.5512 inch length of cut, and four spiral flutes ground from micrograin carbide stock. The TiAlN coating extends tool life by reducing heat buildup at the cutting edge during high-speed operations. With a 35-degree helix angle and centercutting capability, it handles both peripheral and plunge cuts in ferrous and non-ferrous materials. Licensed machinists and tool-and-die professionals rely on this series for close-tolerance finishing and slotting work.\u003c\/p\u003e\u003cp\u003eThe HP441-1575 is suited for vertical machining centers, CNC mills, and manual knee mills where a 4 mm shank toolholder is employed. Its regular-length geometry fits standard collet chucks and end mill holders. The right-hand cut and right-hand flute configuration matches conventional climb and conventional milling setups. Typical applications include pocketing, contouring, and slotting operations in steel, stainless, cast iron, and hardened materials where a small-diameter, high-performance carbide end mill is required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMicrograin solid carbide construction for extended tool life in hard materials\u003c\/li\u003e\n\u003cli\u003eTiAlN finish reduces thermal wear and supports dry or minimal-coolant cutting\u003c\/li\u003e\n\u003cli\u003e35-degree helix angle improves chip evacuation and reduces cutting forces\u003c\/li\u003e\n\u003cli\u003eCentercutting design allows direct plunge entry without a pre-drilled hole\u003c\/li\u003e\n\u003cli\u003eFour-flute spiral geometry provides a superior surface finish on finishing passes\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute for standard CNC and manual mill setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-procurement end mill for applications requiring a 4 mm diameter, 4-flute solid carbide square end mill in the HP441 series from OSG.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists or CNC setup technicians. Ensure the spindle is fully stopped and the machine is locked out before changing tooling. Seat the shank fully in the collet or end mill holder and torque the retention nut to the toolholder manufacturer's specification. Verify runout with a dial indicator before initiating a cut, as excessive runout will accelerate wear on a small-diameter carbide tool.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.1575 inches (4.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.5512 inches (14.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 51.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 4.00 mm\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: 35 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\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\u003eFinish\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Single End Square\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\u003eSeries\u003c\/strong\u003e: HP441\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 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: HP441-1575\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51748524491058,"sku":"HP441-1575","price":43.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4a0e287ee0e5954d14e0ad399c021860.jpg?v=1788894788","url":"https:\/\/voomisupply.com\/products\/osg-hp441-1575-square-end-mill-0-1575-in-4-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}