{"product_id":"osg-hp421-1772-square-end-mill-0-1772-in-2-flute-carbide","title":"Osg HP421-1772 Square End Mill 0.1772 in 2 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG HP421-1772 is a solid carbide square end mill designed for precision milling in demanding machining environments. Built on the HP421 series platform, it features a 0.1772 inch (4.50 mm) cutting diameter with a 0.5512 inch (14.00 mm) length of cut and a 35-degree helix angle. The spiral flute geometry and micrograin carbide substrate support stable, consistent chip evacuation at elevated feed rates. A TiAlN coating provides thermal resistance and extended tool life when cutting ferrous and hardened materials. This end mill is suited for use by machinists and CNC operators in job shop, production, and tool room applications.\u003c\/p\u003e\u003cp\u003eThe HP421-1772 is a centercutting, right-hand cut, right-hand flute end mill with two flutes. The 5.00 mm shank diameter and 51.00 mm overall length make it compatible with standard collet and end mill holder systems. It is well suited for slot milling, peripheral profiling, and plunge entry operations in steel, stainless, cast iron, and similar materials. The two-flute design provides ample chip clearance for applications where chip packing is a concern, such as slotting in softer alloys.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.1772 inch (4.50 mm) cutting diameter with 0.5512 inch (14.00 mm) length of cut\u003c\/li\u003e\n\u003cli\u003eSolid micrograin carbide construction for rigidity and wear resistance\u003c\/li\u003e\n\u003cli\u003eTiAlN finish for thermal protection in high-temperature cutting conditions\u003c\/li\u003e\n\u003cli\u003e35-degree helix angle with spiral flute geometry for smooth chip flow\u003c\/li\u003e\n\u003cli\u003eCentercutting design enables direct plunge entry without a pilot hole\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute configuration for standard CNC spindle use\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement or working tool for standard collet chucks and end mill holders accepting a 5.00 mm shank diameter. Part of the OSG HP421 series.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed by a qualified machinist with the spindle fully stopped and locked out per shop safety procedures. Ensure the collet or holder is clean and free of debris before seating the shank. Torque the collet nut or set screw according to the holder manufacturer specifications. Verify runout with a dial indicator before beginning a production cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.1772 inches (4.50 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\u003eShank Diameter\u003c\/strong\u003e: 5.00 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\u003eNumber of Flutes\u003c\/strong\u003e: 2\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\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\u003c\/strong\u003e: TiAlN\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\u003eSeries\u003c\/strong\u003e: HP421\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: HP421-1772\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51747683565874,"sku":"HP421-1772","price":47.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/69549ce5b9f3965d11538245adafb370.jpg?v=1788884485","url":"https:\/\/voomisupply.com\/products\/osg-hp421-1772-square-end-mill-0-1772-in-2-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}