{"product_id":"walter-6839023-turning-insert-ccmt060202-fm4-wsm20s-carbide","title":"Walter 6839023 Turning Insert CCMT060202-FM4 WSM20S Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe WALTER 6839023 is a solid carbide turning insert in the CCMT-FM4 series, designed for precision material removal on CNC lathes and turning centers. The insert carries the ISO designation CCMT060202-FM4 WSM20S and features a PVD-applied multilayer coating of TiAlN, Al2O3, and Al, which provides thermal resistance and wear protection at elevated cutting temperatures. The 80-degree diamond shape (CCMT) delivers a strong cutting geometry, while the FM4 chip breaker promotes efficient chip control in finishing and semi-finishing passes. The cutting edge is honed with a positive rake angle of 6 degrees and a corner radius of 0.2 mm, supporting stable, low-force cuts on difficult-to-machine materials.\u003c\/p\u003e\n\u003cp\u003eThis insert is intended for turning, facing, and boring operations. Its primary target workpiece materials are stainless steel and superalloys and titanium (ISO material codes M and S), making it well suited for aerospace, medical, and process-industry components where work hardening and tool wear are persistent challenges. Steel (ISO code P) is listed as a secondary workpiece material, covering a broad range of general-purpose turning applications. The WSM20S grade places this insert in the M20, S20, and P20 material grade ranges, appropriate for moderate cutting conditions with intermittent or continuous cuts. A licensed machinist or CNC tool setter is the typical installer in shop or production environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePVD-coated TiAlN plus Al2O3 plus Al multilayer finish for heat and wear resistance on difficult alloys\u003c\/li\u003e\n  \u003cli\u003eFM4 chip breaker geometry optimized for finishing and semi-finishing passes with positive rake\u003c\/li\u003e\n  \u003cli\u003e80-degree diamond insert shape (shape code C) provides a strong nose angle and versatile entry geometry\u003c\/li\u003e\n  \u003cli\u003e0.2 mm corner radius (1\/128 inch) supports tight-tolerance surface finish requirements\u003c\/li\u003e\n  \u003cli\u003eScrew-holding method with a 2.80 mm hole diameter for secure, repeatable seating in compatible toolholders\u003c\/li\u003e\n  \u003cli\u003eTwo cutting edges per insert; neutral hand orientation allows use in standard CCMT toolholders\u003c\/li\u003e\n  \u003cli\u003eConforms to ANSI and ISO insert standards for broad toolholder compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct replacement and standard-production insert conforming to ISO and ANSI CCMT060202 geometry. Compatible with any toolholder accepting a CCMT 06 02 insert with screw clamping. The industry standard number is CCMT2(1.5)0.5-FM4 WSM20S. Suitable for turning, facing, and boring applications on stainless steel, superalloys, titanium, and steel workpieces.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct Torx or hex key for the clamping screw as specified by the toolholder manufacturer; do not overtighten, as this can crack the carbide substrate. Inspect the insert pocket and clamping screw for chips or debris before seating the new insert to ensure proper contact and runout.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Designation\u003c\/strong\u003e: CCMT060202-FM4 WSM20S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Diamond 80 degrees (Shape Code C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: WSM20S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade Range\u003c\/strong\u003e: M20, S20, P20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlN, Al2O3, Al (PVD process)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: FM4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.2 mm (0.008 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 6.35 mm (0.250 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 6.45 mm (0.254 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 2.38 mm (0.0938 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 2.80 mm (0.110 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 7 degrees (Clearance Code C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 6 degrees positive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Edge Style\u003c\/strong\u003e: Honed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHolding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTolerance Code\u003c\/strong\u003e: M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Stainless Steel, Superalloys and Titanium (ISO M, S)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Steel (ISO P)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplications\u003c\/strong\u003e: Turning, Facing, Boring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ANSI, ISO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.004 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: WALTER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 6839023\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALTER","offers":[{"title":"Default Title","offer_id":51973739381042,"sku":"6839023","price":207.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/06334b5d1a3c359344168a56b5e9ef4f_d634da33-a839-44be-b248-463d864c33e6.jpg?v=1789974388","url":"https:\/\/voomisupply.com\/products\/walter-6839023-turning-insert-ccmt060202-fm4-wsm20s-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}