{"product_id":"walter-6917291-turning-insert-wcmt06t304-fm4-wsm20s-carbide","title":"Walter 6917291 Turning Insert WCMT06T304-FM4 WSM20S Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe WALTER 6917291 is a solid carbide turning insert with ISO designation WCMT06T304-FM4 WSM20S, engineered for precision metal cutting in demanding CNC turning applications. The insert features an 80-degree trigon shape, a 0.4 mm corner radius, and a 3\/8 inch inscribed circle diameter. Its WSM20S grade uses a PVD-applied TiCN plus Al2O3 plus Al multilayer coating optimized for material grades M20, S20, and P20. With a positive rake angle of 6 degrees and a 7-degree relief angle, this insert is designed to reduce cutting forces and extend tool life on difficult-to-machine workpieces. It belongs to the Tiger-tec Silver series and carries both ANSI and ISO certifications.\u003c\/p\u003e\n\u003cp\u003eThis insert is intended primarily for turning stainless steel and superalloys including titanium, with secondary application in general steel machining. The FM4 chip breaker geometry supports turning, facing, and boring operations. Typical installation scenarios include CNC lathes and turning centers in job shop, production, and aerospace component manufacturing environments. The screw-clamping hold method and neutral hand orientation make it compatible with standard WCMT-style toolholders. Maximum recommended depth of cut is 1.50 mm, making it well suited for light to medium finishing passes on heat-resistant and work-hardening alloys.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eWSM20S PVD-coated solid carbide grade rated for stainless steel, superalloys, titanium, and steel\u003c\/li\u003e\n  \u003cli\u003eFM4 chip breaker geometry supports turning, facing, and boring in a single insert\u003c\/li\u003e\n  \u003cli\u003e80-degree trigon shape with 3 cutting edges maximizes insert utilization\u003c\/li\u003e\n  \u003cli\u003ePositive rake and honed cutting edge reduce cutting forces on work-hardening materials\u003c\/li\u003e\n  \u003cli\u003eScrew-clamping mount with neutral hand for use in standard WCMT toolholders\u003c\/li\u003e\n  \u003cli\u003eConforms to ANSI and ISO standards; ISO code WCMT06T304-FM4 WSM20S\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in WCMT-style screw-clamp toolholders. Industry standard number WCMT3(2.5)1-FM4 WSM20S. Compatible with toolholder bores accepting a 0.173 inch screw hole diameter. Suitable for turning, facing, and boring across multiple workpiece material groups including M, S, and P classifications per ISO turning material codes.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torx or hex key to seat the clamping screw to the toolholder manufacturer specification  -  do not overtighten, as this can fracture the carbide body. Inspect the insert pocket and seating surface for chips or debris before mounting a fresh cutting edge.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: WCMT06T304-FM4 WSM20S\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Trigon (80 degrees, W)\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\u003eCoating\u003c\/strong\u003e: TiCN plus Al2O3 plus Al (PVD)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 3\/8 inch (0.3750 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 6.52 mm (0.5140 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 3.97 mm (0.1563 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.40 mm (0.0157 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 1.50 mm (0.0590 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 4.40 mm (0.1730 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 7 degrees\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: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: FM4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Stainless Steel, Superalloys and Titanium (M, S)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material\u003c\/strong\u003e: Steel (P)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: M20, S20, P20\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: 0.01 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: WALTER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 6917291\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"WALTER","offers":[{"title":"Default Title","offer_id":52006093816114,"sku":"6917291","price":277.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6d98a85807e51c81c93d6bace6be774a.jpg?v=1790000694","url":"https:\/\/voomisupply.com\/products\/walter-6917291-turning-insert-wcmt06t304-fm4-wsm20s-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}