{"product_id":"walter-6836812-turning-insert-ccmt060204-mm4-wsm20s","title":"Walter 6836812 Turning Insert CCMT060204-MM4 WSM20S","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe WALTER 6836812 is a solid carbide turning insert in the CCMT-MM4 series, designed for precision metal removal in demanding machining applications. It carries the ISO designation CCMT060204-MM4 WSM20S and features a multilayer PVD coating of TiCN, Al2O3, and Al for extended tool life in abrasive and high-temperature cutting environments. The 80-degree diamond insert shape provides a strong cutting geometry, and the honed cutting edge style reduces chipping during interrupted or continuous cuts. With a 0.4 mm corner radius and a positive rake angle of 7 degrees, this insert is engineered for finishing and semi-finishing passes where surface quality and edge stability matter.\u003c\/p\u003e\n\u003cp\u003eThis insert is intended for turning, facing, and boring operations on stainless steel and superalloys and titanium as primary workpiece materials, with steel as a secondary application. It fits standard CCMT toolholders with screw clamping and is used by machinists and CNC turning specialists in both production shops and job shops. The MM4 chip breaker geometry is suited for controlled chip formation in materials that are prone to stringy or tough chips, such as austenitic stainless steels and nickel-based superalloys.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide substrate with PVD-applied TiCN, Al2O3, and Al multilayer coating for heat and wear resistance\u003c\/li\u003e\n  \u003cli\u003e80-degree diamond insert shape (Shape Code C) for strong nose geometry with 2 usable cutting edges\u003c\/li\u003e\n  \u003cli\u003e0.4 mm corner radius for balance between surface finish and edge strength\u003c\/li\u003e\n  \u003cli\u003eMM4 chip breaker optimized for stainless steel, superalloys, and titanium\u003c\/li\u003e\n  \u003cli\u003ePositive rake angle reduces cutting forces in tough, work-hardening materials\u003c\/li\u003e\n  \u003cli\u003eCompatible with turning, facing, and boring operations on CCMT-style screw-lock toolholders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in CCMT-style screw-clamp turning toolholders conforming to ANSI and ISO standards. The ISO code CCMT060204-MM4 WSM20S and industry standard number CCMT2(1.5)1-MM4 WSM20S can be used to verify toolholder and pocket compatibility. Primary workpiece material codes M and S cover stainless steel and superalloys and titanium; secondary material code P covers steel.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or CNC setup technicians. Power down and lock out the machine spindle before seating or replacing the insert. Secure the insert with the appropriate torx or hex key to the manufacturer-specified clamp screw for CCMT pockets  -  do not overtighten, as carbide inserts are brittle and can fracture under excessive clamp force. Inspect the toolholder pocket and seating surface for chips or debris before installing a fresh insert to ensure proper seating and runout.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: CCMT060204-MM4 WSM20S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustry Standard Number\u003c\/strong\u003e: CCMT2(1.5)1-MM4 WSM20S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Diamond 80 (Shape Code C)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 80 degrees\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: TiCN, Al2O3, Al (PVD Process)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: WSM20S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M20, S20, P20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: MM4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.4 mm (0.0157 inches, 1\/64 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 6.35 mm (0.2500 inches, 1\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 6.45 mm (0.2540 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 2.38 mm (0.0938 inches, 3\/32 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 6.45 mm (0.2540 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 2.80 mm (0.1100 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: 7 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\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWiper Edge\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull Radius\u003c\/strong\u003e: No\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Steel\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: 0.002 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: 6836812\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALTER","offers":[{"title":"Default Title","offer_id":51971404333362,"sku":"6836812","price":205.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cf00fb4558e472c0247e64da55660569_120d26dd-5651-4c61-a7fa-d99e92dada6f.jpg?v=1789956926","url":"https:\/\/voomisupply.com\/products\/walter-6836812-turning-insert-ccmt060204-mm4-wsm20s","provider":"Voomi Supply","version":"1.0","type":"link"}