{"product_id":"walter-7091887-cnmg120404-fm5-wsm20s-turning-insert","title":"Walter 7091887 CNMG120404-FM5 WSM20S Turning Insert","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe WALTER 7091887 is a solid carbide turning insert designated ISO code CNMG120404-FM5 WSM20S, engineered for high-performance metal cutting in demanding materials. It carries a multilayer PVD coating of TiCN, Al2O3, and Al for heat resistance and extended tool life. The insert features an 80-degree diamond shape with a negative rake angle and a chamfered and honed cutting edge. With four usable cutting edges and the FM5 chip breaker geometry, it delivers reliable chip control across turning, facing, and boring operations. Licensed HVAC and machining tradespeople working with stainless steel, superalloys, and titanium will recognize this grade as purpose-built for ISO material groups M and S.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for CNC turning centers handling stainless steel and superalloy components where consistent chip evacuation and edge stability are critical. The FM5 geometry supports medium-depth roughing and semi-finishing passes. Secondary application covers carbon and alloy steel workpieces in ISO material group P, making this a versatile insert for shops running mixed material schedules. It is held by clamp and pin methods, fitting standard CNMG toolholders used in production and jobshop environments alike.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003ePVD-applied TiCN, Al2O3, and Al multilayer coating for thermal and abrasion resistance\u003c\/li\u003e\n  \u003cli\u003e80-degree diamond insert shape with negative rake for strong cutting edge support\u003c\/li\u003e\n  \u003cli\u003eFM5 chip breaker geometry optimized for stainless steel, superalloys, and titanium\u003c\/li\u003e\n  \u003cli\u003eFour cutting edges per insert for extended tool economy\u003c\/li\u003e\n  \u003cli\u003eChamfered and honed edge prep reduces micro-chipping on interrupted cuts\u003c\/li\u003e\n  \u003cli\u003eCompatible with clamp and pin holding methods in standard CNMG toolholders\u003c\/li\u003e\n  \u003cli\u003eMulti-use geometry supports turning, facing, and boring in a single insert grade\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in standard CNMG toolholders accepting a 0.5-inch inscribed circle insert. Primary workpiece materials are stainless steel, superalloys, and titanium (ISO groups M and S). Secondary workpiece material is steel (ISO group P). Industry standard number CNMG431-FM5 WSM20S applies for cross-reference purposes.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or toolroom technicians on CNC or manual turning equipment. Power down and lock out the machine spindle before seating or indexing the insert. Ensure the insert pocket and seating surfaces are clean and free of chips before clamping. Follow the toolholder manufacturer's clamping torque specifications and do not substitute clamping hardware between insert holding systems.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: CNMG120404-FM5 WSM20S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustry Standard Number\u003c\/strong\u003e: CNMG431-FM5 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\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\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\u003eChip Breaker\u003c\/strong\u003e: FM5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Edge Style\u003c\/strong\u003e: Chamfered and Honed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 10 degrees (Negative)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelief Angle (Clearance Code N)\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 80 degrees\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: 12.70 mm (0.5000 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 12.90 mm (0.5080 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 4.76 mm (0.1875 inches, 3\/16 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 5.16 mm (0.2030 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 12.90 mm (0.5080 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHolding Method\u003c\/strong\u003e: Clamp and Pin\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, 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\u003eMulti-Use Application\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: 0.02 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: 7091887\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALTER","offers":[{"title":"Default Title","offer_id":52088203936050,"sku":"7091887","price":301.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e1a09e263ef68dedbaef4aa734a3fc58_0f0f8157-08cd-4da6-be2a-d2df8311135c.jpg?v=1790060926","url":"https:\/\/voomisupply.com\/products\/walter-7091887-cnmg120404-fm5-wsm20s-turning-insert","provider":"Voomi Supply","version":"1.0","type":"link"}