{"product_id":"kennametal-4175981-threading-insert-nt3r-kcu10-carbide","title":"Kennametal 4175981 Threading Insert NT3R KCU10 Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4175981 is a carbide threading insert in the Top Notch series, designed for precision thread-turning operations on CNC lathes and manual turning centers. The insert carries a KCU10 grade designation and features a PVD-applied AlTiN finish that provides heat resistance and extended tool life in demanding threading applications. The NT3R insert style is right-hand oriented and covers a partial profile 60-degree thread form, making it suitable for cutting both internal and external threads across a wide pitch range. At 0.04 pounds, this is a precision indexable insert intended for machinists and toolroom professionals working to tight thread tolerances.\u003c\/p\u003e\u003cp\u003eThis insert handles external thread pitches from 1.25 to 4.00 mm and 6 to 20 TPI, and internal thread pitches from 2.00 to 5.00 mm and 5 to 12 TPI. It is well suited to production threading in job shops, manufacturing facilities, and maintenance machining environments where consistent thread form accuracy is required across both inch and metric thread standards. The K-style chipbreaker aids chip evacuation during threading passes, reducing the risk of re-cutting chips in both through and blind-hole applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCarbide substrate with PVD AlTiN coating for heat and wear resistance\u003c\/li\u003e\n\u003cli\u003ePartial profile 60-degree thread form covers both UN and metric thread families\u003c\/li\u003e\n\u003cli\u003eRight-hand, NT3R insert style compatible with Top Notch series toolholders\u003c\/li\u003e\n\u003cli\u003eK-style chipbreaker for controlled chip flow during internal and external threading\u003c\/li\u003e\n\u003cli\u003eCovers external pitches from 1.25 to 4.00 mm and 6 to 20 TPI\u003c\/li\u003e\n\u003cli\u003eCovers internal pitches from 2.00 to 5.00 mm and 5 to 12 TPI\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with Top Notch series threading toolholders that accept NT3R insert style, size 3 inserts. Suitable for both internal and external threading applications using partial profile 60-degree geometry.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eIndexable threading inserts should be seated and clamped per the toolholder manufacturer's torque guidelines using the appropriate Torx or hex key. Ensure the toolholder pocket and seating surface are clean and free of debris before indexing or replacing the insert. Verify spindle and axis motion are fully stopped and the machine is in a safe state before handling inserts. Always confirm insert orientation and hand designation match the toolholder and intended thread direction before initiating a cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: NT3R\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\u003eThread Standard\u003c\/strong\u003e: Partial Profile 60 Degree\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\u003eExternal Pitch Range\u003c\/strong\u003e: 1.25 to 4.00 mm; 6 to 20 TPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Pitch Range\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\u003eChipbreaker\u003c\/strong\u003e: K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Size\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Top Notch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.17 mm (0.0067 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 8.74 mm (0.344 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTip to Top of Insert\u003c\/strong\u003e: 0.0980 inches\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: 4175981\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51747263447346,"sku":"4175981","price":224.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d9f2fd335befda100c316353c7e29264.jpg?v=1788878340","url":"https:\/\/voomisupply.com\/products\/kennametal-4175981-threading-insert-nt3r-kcu10-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}