{"product_id":"kennametal-4176020-threading-insert-na3r12-kcu10-carbide","title":"Kennametal 4176020 Threading Insert NA3R12 KCU10 Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4176020 is a carbide threading insert designed for precision thread-cutting operations on both internal and external Acme-standard threads. It carries the KCU10 manufacturer grade and features a PVD-applied AlTiN finish that supports extended tool life under demanding cutting conditions. The insert follows the Top Notch series profile with an NA style and is configured for right-hand cutting at 12 threads per inch (TPI) with an included angle of 29 degrees. The cutting tip width measures 0.0283 inches and the corner radius is 0.005 inches, making it suited for clean, accurate Acme thread profiles on ferrous and non-ferrous workpiece materials.\u003c\/p\u003e\u003cp\u003eThis insert is used in CNC lathes, manual engine lathes, and threading toolholders that accept the Top Notch insert system. Typical applications include machining Acme lead screws, power transmission components, and mechanical actuator threads in both production and job shop environments. It handles internal and external threading passes, making it a versatile choice for machinists working across a range of part programs that specify Acme thread forms.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCarbide substrate with PVD AlTiN coating for wear resistance and thermal stability\u003c\/li\u003e\n\u003cli\u003eRight-hand cutting orientation for standard lathe threading passes\u003c\/li\u003e\n\u003cli\u003e12 TPI pitch rated for Acme thread standard, internal and external application\u003c\/li\u003e\n\u003cli\u003e29-degree included angle matches Acme thread form geometry precisely\u003c\/li\u003e\n\u003cli\u003eCorner radius of 0.005 inches for controlled thread root finish\u003c\/li\u003e\n\u003cli\u003eTop Notch series insert style for compatibility with Top Notch toolholders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in Top Notch series threading toolholders that accept NA-style inserts with insert size 3. Verify toolholder insert pocket geometry and clamping specifications before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis insert is installed and serviced by machinists or tool-and-die professionals. Power down and lock out the machine spindle before seating or removing any insert. Ensure the insert pocket and clamping screw are clean and free of chips before installation. Do not exceed the toolholder manufacturer's recommended cutting parameters for this insert style and grade.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: NA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: KCU10\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: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Pitch\u003c\/strong\u003e: 12 TPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 29 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Top Notch\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\u003eInsert Size\u003c\/strong\u003e: 3\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\u003eCorner Radius\u003c\/strong\u003e: 0.005 inches (0.13 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth of Cutting Tip\u003c\/strong\u003e: 0.0283 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.1949 inches (8.74 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.04 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: 4176020\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51754938466610,"sku":"4176020","price":248.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/80b13ee75e6823157504b99307b732e0_9ce9ac48-9f82-479b-8271-763c6d04af93.jpg?v=1788949966","url":"https:\/\/voomisupply.com\/products\/kennametal-4176020-threading-insert-na3r12-kcu10-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}