{"product_id":"kennametal-4109627-threading-insert-na3l6-kcu25-carbide","title":"Kennametal 4109627 Threading Insert NA3L6 KCU25 Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4109627 is a carbide threading insert in the Top Notch series, designed for cutting Acme threads at 6 threads per inch (TPI) with a 29-degree included angle. The insert carries a KCU25 manufacturer grade and features an aluminum titanium nitride (AlTiN) finish applied via PVD coating. Configured for left-hand operation, it is suited for both internal and external thread-cutting applications. Machinists and CNC lathe operators use this insert in production environments where consistent thread form and wear resistance are critical. The cutting tip width measures 0.0567 inches (1.44 mm), and the corner radius is 0.005 inches (0.13 mm).\u003c\/p\u003e\u003cp\u003eThis threading insert is intended for use in Top Notch compatible toolholders on CNC lathes and manual turning centers. It is well suited for shops producing Acme-threaded components such as lead screws, power screws, and linear motion hardware. The left-hand orientation makes it the correct choice when thread direction or machine setup requires reverse-hand cutting. Both internal and external thread profiles are supported, giving the insert flexibility across multiple setups within the same grade and geometry.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eKCU25 carbide grade with AlTiN PVD coating for extended tool life in steel and alloy applications\u003c\/li\u003e\n\u003cli\u003eAcme thread form at 6 TPI with a 29-degree included angle for accurate thread geometry\u003c\/li\u003e\n\u003cli\u003eLeft-hand insert orientation for reverse-direction threading operations\u003c\/li\u003e\n\u003cli\u003eSupports both internal and external thread cutting in a single insert style\u003c\/li\u003e\n\u003cli\u003eTop Notch series design for secure, repeatable seating in compatible toolholders\u003c\/li\u003e\n\u003cli\u003eCompact geometry with 0.005-inch corner radius for sharp, defined thread root control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in Top Notch series toolholders that accept size 3 inserts. No additional specific model or part number compatibility data was provided in the product input.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis insert is installed and serviced by machinists or CNC tooling technicians. Power down and lock out the machine spindle before changing inserts. Use the appropriate Top Notch torque key or clamping hardware to seat the insert fully against the pocket — do not substitute with non-rated fasteners. Confirm thread hand and insert orientation match the programmed toolpath before resuming cuts.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: NA3L6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: KCU25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish Coating\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Top Notch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: Acme\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal and External\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Pitch\u003c\/strong\u003e: 6 TPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 29 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Size\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth of Cutting Tip\u003c\/strong\u003e: 0.0567 inches (1.44 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.005 inches (0.13 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip to Top of Insert\u003c\/strong\u003e: 0.1492 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.1949 inches (4.95 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 9.6 inches (L) x 5.2 inches (W) x 1.7 inches (H)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.001 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23291804\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: KENNAMETAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4109627\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51734929703218,"sku":"4109627","price":243.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/37e3986c49ca576751394a534d9e7e8d_667afba3-e2b2-46c9-aa3b-eb7c274bfdcc.jpg?v=1788768270","url":"https:\/\/voomisupply.com\/products\/kennametal-4109627-threading-insert-na3l6-kcu25-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}