{"product_id":"iscar-5666820-milling-insert-t490-lnar-0804pn-r-p-ic07","title":"Iscar 5666820 Milling Insert T490 Lnar 0804PN-R-P IC07","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ISCAR 5666820 is a solid carbide milling insert carrying the manufacturer designation T490 LNAR 0804PN-R-P IC07. It belongs to the HELITANG series and is designed for indexable milling applications requiring a negative rake, helical cutting edge geometry. The insert features a butterfly shape with an inscribed circle of 0.167 inches, a thickness of 0.295 inches (7.50 mm), and a corner radius of 0.40 mm (1\/64 inch). The IC07 submicron grade is left uncoated and bright-finished, making it well suited for applications where coating adhesion or contamination is a concern. Four cutting edges are available per insert, and the double-sided design maximizes tool life per unit.\u003c\/p\u003e\n\u003cp\u003eThis insert is intended for milling stainless steel, non-ferrous metals, superalloys, and titanium — material application codes M, N, and S. It fits the T490 LNK08 cutter series and is screw-held in the toolholder pocket. The maximum depth of cut is 8.00 mm (0.315 inches), and the cutting edge effective length is 0.315 inches. The right-hand orientation and 90-degree included angle make it appropriate for square-shoulder and face milling operations on CNC machining centers handling difficult-to-machine alloys in aerospace, medical, and precision manufacturing environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide IC07 submicron grade — uncoated, bright finish for stainless steel, non-ferrous, superalloys, and titanium\u003c\/li\u003e\n  \u003cli\u003eHELITANG series helical cutting edge reduces cutting forces on difficult materials\u003c\/li\u003e\n  \u003cli\u003eDouble-sided insert with 4 cutting edges for extended tool life per insert\u003c\/li\u003e\n  \u003cli\u003eNegative rake geometry with 90-degree included angle for square-shoulder milling\u003c\/li\u003e\n  \u003cli\u003eCorner radius of 0.40 mm (1\/64 inch) for controlled edge strength at fine cutting conditions\u003c\/li\u003e\n  \u003cli\u003eScrew-held mounting for secure, repeatable seating in compatible toolholders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eThis insert is compatible with the T490 LNK08 cutter series as specified by the manufacturer. The ANSI code is T490 LNAR 0804PN-R-P IC07 and the ISO code is T490 LNAR 0804PN-R-P. The insert conforms to ANSI and ISO 13399 standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a machinist or tooling technician on a CNC milling machine. The machine spindle must be fully stopped and locked out before changing inserts. Use the appropriate torx or hex key to seat the crew-held insert flush in the pocket, taking care not to overtighten, which can crack the carbide body. Confirm correct hand orientation — this insert is right-hand only — before resuming cutting operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: LNAR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Butterfly\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 0804\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HELITANG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: IC07\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Submicron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Uncoated (Bright)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle or Double Sided\u003c\/strong\u003e: Double\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Negative\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 90 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Edge Style\u003c\/strong\u003e: Helical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.40 mm (0.0157 inches, 1\/64 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 0.167 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 7.50 mm (0.295 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 4.25 mm (0.167 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 8.60 mm (0.3386 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 8.00 mm (0.315 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Edge Effective Length\u003c\/strong\u003e: 0.315 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Stainless Steel, Non-Ferrous Metal, Superalloys and Titanium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutter Series Compatibility\u003c\/strong\u003e: T490 LNK08\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, ISO 13399\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eANSI Code\u003c\/strong\u003e: T490 LNAR 0804PN-R-P IC07\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: T490 LNAR 0804PN-R-P\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\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: ISCAR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5666820\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ISCAR","offers":[{"title":"Default Title","offer_id":51732534231346,"sku":"5666820","price":364.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0d0f66a928feecf7500319a2b8a75a7b.jpg?v=1788744141","url":"https:\/\/voomisupply.com\/products\/iscar-5666820-milling-insert-t490-lnar-0804pn-r-p-ic07","provider":"Voomi Supply","version":"1.0","type":"link"}