{"product_id":"iscar-5621691-corner-chamfer-end-mill-0-25-in-4-flute","title":"Iscar 5621691 Corner Chamfer End Mill 0.25 in 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ISCAR 5621691 is a single-end corner chamfer end mill designed for creating chamfered edges and blended corner profiles on ferrous and non-ferrous workpieces. Built from submicron-grade solid carbide, it delivers high rigidity and wear resistance at elevated cutting speeds. The tool features a TiAlN coating that enhances thermal stability and extends tool life in dry or semi-dry cutting environments. Key geometry includes a 0.25 inch diameter, 0.5 inch length of cut, 0.01 inch chamfer width, a 45-degree chamfer angle, and a 45-degree high helix spiral flute configuration across four right-hand flutes. Licensed machinists and CNC operators working on precision part finishing install this tool in standard collet or end mill holders.\u003c\/p\u003e\u003cp\u003eThis corner chamfer end mill is suited for finish chamfering operations on milled components in job shop, toolroom, and production machining environments. The coarse pitch, four-flute spiral geometry supports chip evacuation in both ferrous and hardened materials. The straight cylindrical shank measures 0.25 inches in diameter with a 2.5 inch overall length, making it compatible with standard ER collets and side-lock holders used on vertical machining centers and CNC mills. It is not center-cutting and does not support coolant-through delivery, so external flood or mist coolant should be directed at the cutting zone. No chipbreaker or extended-reach configuration is present on this tool.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSubmicron solid carbide substrate for rigidity and wear resistance in demanding cuts\u003c\/li\u003e\n\u003cli\u003eTiAlN coating provides thermal protection and extended tool life in dry or semi-dry machining\u003c\/li\u003e\n\u003cli\u003e45-degree chamfer angle and 0.01 inch chamfer width for precise edge-break and chamfer geometry\u003c\/li\u003e\n\u003cli\u003eHigh helix, right-hand spiral flute design promotes efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eCoarse pitch, four-flute configuration balances chip load and surface finish\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank fits standard collet systems without adapters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement-grade corner chamfer end mill for use in standard 0.25 inch straight-shank collet and end mill holder systems on vertical machining centers and CNC milling machines.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC operator. Power down and lock out the spindle before securing the tool in the holder. Ensure the shank is clean and seated to the proper gauge-length depth in the collet or holder before torquing the retention nut. Because this tool is not center-cutting, avoid plunge entry directly into solid material; use ramping or helical interpolation for entry moves.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Width\u003c\/strong\u003e: 0.01 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChamfer Angle\u003c\/strong\u003e: 45 degrees\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: 45 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral, Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePitch\u003c\/strong\u003e: Coarse\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide, Submicron Grade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter Cutting\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\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\u003eWeight\u003c\/strong\u003e: 0.637 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: ISCAR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5621691\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ISCAR","offers":[{"title":"Default Title","offer_id":51741850173746,"sku":"5621691","price":111.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/33e51a51beb563fd3cc8270fa2d12f93.jpg?v=1788833835","url":"https:\/\/voomisupply.com\/products\/iscar-5621691-corner-chamfer-end-mill-0-25-in-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}