{"product_id":"walter-6839055-tcmt110204-fm4-wsm10s-turning-insert","title":"Walter 6839055 TCMT110204-FM4 WSM10S Turning Insert","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe WALTER 6839055 is a TCMT-style indexable carbide turning insert designed for finishing operations on stainless steel, superalloys, and titanium, with secondary capability on steel. The insert carries a multilayer PVD coating of TiAlN, Al2O3, and Al under the proprietary WSM10S grade designation. It features a 60-degree triangular shape with three cutting edges, a positive rake angle of 6 degrees, and a honed cutting edge style. The 0.4 mm corner radius suits fine finishing work, and the FM4 chip breaker geometry manages chip control in light to moderate depth-of-cut passes. This insert is installed by CNC machinists and toolroom technicians in production turning, facing, and boring applications.\u003c\/p\u003e\n\u003cp\u003eThis insert fits screw-clamped TCMT toolholders and is suited for turning, facing, and boring operations on CNC lathes and turning centers. Primary target materials are stainless steel (ISO material group M) and superalloys and titanium (ISO material group S). Steel (ISO group P) is a listed secondary workpiece material. The FM4 chip breaker geometry is optimized for finishing cuts, making this insert well suited for tight-tolerance diameter work and finish-bore passes where surface quality and dimensional control are the priority.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eWSM10S grade with multilayer PVD coating: TiAlN, Al2O3, and Al for heat and wear resistance on difficult materials\u003c\/li\u003e\n  \u003cli\u003eFM4 chip breaker geometry optimized for finishing operations\u003c\/li\u003e\n  \u003cli\u003eThree usable cutting edges per insert for extended tooling economy\u003c\/li\u003e\n  \u003cli\u003ePositive rake and positive side clearance reduce cutting forces on stainless and titanium\u003c\/li\u003e\n  \u003cli\u003eHoned cutting edge style improves edge stability and reduces microchipping\u003c\/li\u003e\n  \u003cli\u003eNeutral hand  -  compatible with both right-hand and left-hand toolholder configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for screw-clamped TCMT-style toolholders conforming to ANSI insert code TCMT21.51 and ISO insert code TCMT110204. Suitable for use in turning, facing, and boring operations across CNC and manual lathe setups that accept this insert geometry.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque screwdriver or Torx key as specified by the toolholder manufacturer  -  do not overtighten the clamping screw, as this can fracture the carbide body. Inspect the insert seat and clamping screw for wear or debris before seating a new insert to ensure proper clamping and repeatability.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: TCMT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: T - Triangle, 60-degree included angle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eANSI Insert Code\u003c\/strong\u003e: TCMT21.51\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Insert Code\u003c\/strong\u003e: TCMT110204\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: WSM10S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: FM4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker Operation\u003c\/strong\u003e: Finishing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Carbide\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\u003eCutting Edge Style\u003c\/strong\u003e: Honed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Cutting Edges\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake\u003c\/strong\u003e: Positive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRake Angle\u003c\/strong\u003e: 6 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 7 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSide Clearance\u003c\/strong\u003e: Positive\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 (0.250 inches, 1\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 10.74 mm (0.433 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: 10.74 mm (0.423 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\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Stainless Steel, Superalloys and Titanium (ISO groups M, S)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Steel (ISO group P)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M1, S10, P10\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: 0.002 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: 6839055\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALTER","offers":[{"title":"Default Title","offer_id":51998096032050,"sku":"6839055","price":225.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7edcdb6ac9281371487e434ef46e1539.jpg?v=1789994593","url":"https:\/\/voomisupply.com\/products\/walter-6839055-tcmt110204-fm4-wsm10s-turning-insert","provider":"Voomi Supply","version":"1.0","type":"link"}