{"product_id":"kennametal-4175989-threading-insert-ntp3r-kcu10-carbide","title":"Kennametal 4175989 Threading Insert NTP3R KCU10 Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4175989 is a carbide threading insert in the Top Notch series, designed for precision thread-cutting operations on CNC lathes and turning centers. Manufactured to insert style NTP in grade KCU10, it features an AlTiN finish applied via PVD coating process, which provides wear resistance and thermal stability during high-speed threading passes. The insert handles both internal and external threading with a partial profile 60-degree included angle, making it a versatile single tool for a wide range of thread forms. Licensed machinists and CNC operators typically specify this insert for production threading in steel and alloy workpiece materials.\u003c\/p\u003e\u003cp\u003eThis insert covers external pitch ranges of 1.25 to 4.00 mm (6 to 20 TPI) and internal pitch ranges of 2.00 to 5.00 mm (5 to 12 TPI), supporting a broad spectrum of common thread sizes in both metric and unified inch standards. It is suited for use in production shops, tool rooms, and contract machining environments where consistent thread quality is required across multiple part runs. The right-hand cutting orientation accommodates standard lathe setups without special toolholder modifications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eKCU10 carbide grade with PVD-applied AlTiN coating for wear resistance\u003c\/li\u003e\n\u003cli\u003eHandles both internal and external threading from a single insert\u003c\/li\u003e\n\u003cli\u003ePartial profile 60-degree thread form covers a wide TPI and pitch range\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting orientation for standard lathe and turning center setups\u003c\/li\u003e\n\u003cli\u003eTop Notch series insert style NTP with size 3 insert for secure toolholder indexing\u003c\/li\u003e\n\u003cli\u003eCorner radius of 0.17 mm (0.0065 inches) for controlled thread root geometry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Top Notch series toolholders that accept NTP style, size 3 threading inserts. Specific toolholder compatibility should be confirmed against KENNAMETAL Top Notch system toolholder documentation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician with the machine in a safe, locked-out state before indexing or replacing inserts. Use the appropriate torque wrench per the toolholder manufacturer specification for clamping screws — do not overtighten. Ensure the insert seats fully and cleanly in the pocket before resuming cutting operations. Confirm correct spindle direction and feed rate settings match the insert hand and thread pitch before initiating the threading cycle.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: NTP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: KCU10\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\u003eThread Type\u003c\/strong\u003e: Internal and External\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: Partial Profile 60 Degree\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Pitch\u003c\/strong\u003e: 1.25 to 4.00 mm (6 to 20 TPI)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Pitch\u003c\/strong\u003e: 2.00 to 5.00 mm (5 to 12 TPI)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 60 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Size\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 4.95 mm (0.195 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.17 mm (0.0065 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Top Notch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.03 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: 4175989\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51755201495346,"sku":"4175989","price":232.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/81d349ff947f734321e314f804781def_98c7b186-7b70-4f36-b339-fb3eeb9f5851.jpg?v=1788952109","url":"https:\/\/voomisupply.com\/products\/kennametal-4175989-threading-insert-ntp3r-kcu10-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}