{"product_id":"kennametal-4176031-threading-insert-stub-acme-5-tpi-kcu10","title":"Kennametal 4176031 Threading Insert Stub Acme 5 Tpi KCU10","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 4176031 is a carbide threading insert designed for cutting Stub Acme threads at 5 threads per inch (TPI). It carries the NAS3R5 insert style designation and features an AlTiN finish applied via PVD coating process, which improves wear resistance and heat tolerance during threading operations. With a 29-degree included angle and a right-hand orientation, this insert suits both internal and external thread forms. The KCU10 grade carbide substrate is engineered for consistent performance in threading applications where edge integrity and surface finish are critical. Licensed machinists and CNC operators install this insert in compatible Top Notch toolholders.\u003c\/p\u003e\n\u003cp\u003eThis insert fits residential and industrial machining environments alike, including job shops and production floors running CNC lathes or manual turning centers. It is sized as Insert Size 3 within the Top Notch series and is appropriate for operators cutting Stub Acme thread profiles on shafting, lead screws, or threaded components requiring a 29-degree flank angle. The right-hand cutting orientation covers the most common thread direction encountered in general machining work. Both internal and external threading applications are supported with this single insert geometry.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eStub Acme thread standard with 5 TPI internal pitch and 29-degree included angle\u003c\/li\u003e\n  \u003cli\u003eKCU10 carbide grade with AlTiN finish via PVD coating for extended tool life\u003c\/li\u003e\n  \u003cli\u003eSupports both internal and external thread cutting in a single insert\u003c\/li\u003e\n  \u003cli\u003eRight-hand cutting orientation, NAS insert style designation\u003c\/li\u003e\n  \u003cli\u003eCutting tip width of 0.0793 inches (2.01 mm) for precise thread form control\u003c\/li\u003e\n  \u003cli\u003eCorner radius of 0.0050 inches (0.13 mm) for sharp, defined thread root geometry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement insert for Top Notch series threading toolholders that accept Insert Size 3 NAS-style carbide threading inserts.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis insert is installed and replaced by machinists or CNC tooling technicians. Power down and de-energize the machine spindle before changing inserts. Seat the insert firmly into the Top Notch toolholder pocket and verify clamp engagement before resuming cuts. Handle carbide inserts with care to avoid chipping the cutting edge during installation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: NAS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: Stub 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\u003eInternal Pitch\u003c\/strong\u003e: 5 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 Hand\u003c\/strong\u003e: Right Hand\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\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\u003eInsert Size\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Tip Width\u003c\/strong\u003e: 0.0793 inches (2.01 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0050 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\u003eWeight\u003c\/strong\u003e: 0.021 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: KENNAMETAL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4176031\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51786420289842,"sku":"4176031","price":246.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6309b28acc99b6b6ae241890a35e5781_3ece2bc0-b59b-4279-ba75-0b954a6efb0b.jpg?v=1789202757","url":"https:\/\/voomisupply.com\/products\/kennametal-4176031-threading-insert-stub-acme-5-tpi-kcu10","provider":"Voomi Supply","version":"1.0","type":"link"}