{"product_id":"sandvik-coromant-5757893-threading-insert-12-tpi-un","title":"Sandvik Coromant 5757893 Threading Insert 12 Tpi Un","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 5757893 is a solid carbide laydown threading insert engineered for precision internal UN thread cutting. Designated under the CoroThread 266 series, this insert carries a dual PVD coating of TiAlN and TiCrAlN for extended wear resistance in demanding threading applications. It is configured for left-hand internal threading at 12 threads per inch (TPI) with a 60-degree included angle. The inscribed circle measures 3\/8 inches and the insert thickness is 5\/32 inches. Manufacturer grade 1125 provides a balanced combination of toughness and heat resistance. Licensed machinists and CNC threading specialists are the primary users of this tooling component.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for internal threading operations on turning centers and CNC lathes where UN-standard left-hand threads are required. The chipbreaker designation A and single tooth per side geometry make it appropriate for controlled, consistent thread profile production in ferrous and non-ferrous materials. It fits toolholders designed for the CoroThread 266 insert style 266 with insert size code 16, making it a direct fit in compatible SANDVIK COROMANT CoroThread 266 toolholder systems.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide substrate with PVD-applied TiAlN and TiCrAlN dual-layer coating for thermal and wear resistance\u003c\/li\u003e\n  \u003cli\u003eLeft-hand internal UN thread configuration at 12 TPI with 60-degree included angle\u003c\/li\u003e\n  \u003cli\u003eCoroThread 266 series insert style with size code 16\u003c\/li\u003e\n  \u003cli\u003eChipbreaker style A for controlled chip formation during threading passes\u003c\/li\u003e\n  \u003cli\u003eInscribed circle of 3\/8 inches (9.53 mm); insert thickness of 5\/32 inches (3.97 mm)\u003c\/li\u003e\n  \u003cli\u003eHole diameter of 0.1732 inches (4.40 mm) for secure toolholder seating\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with SANDVIK COROMANT CoroThread 266 series toolholders accepting insert style 266, size code 16, for left-hand internal UN threading applications. Manufacturer catalog number reference: 266LL-16UN01A120M 1125.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by qualified machinists following the toolholder manufacturer torque and clamping specifications for the CoroThread 266 insert pocket. Power down and lock out the machine spindle before seating or removing the insert. Inspect the insert pocket and clamping screw for wear or damage prior to installation. Dispose of worn inserts in accordance with applicable shop safety and carbide recycling procedures.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Series\u003c\/strong\u003e: CoroThread 266\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: 266\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 16\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: 1125\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads Per Inch\u003c\/strong\u003e: 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\u003eInscribed Circle\u003c\/strong\u003e: 3\/8 inches (9.53 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 5\/32 inches (3.97 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.1732 inches (4.40 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Teeth Per Side\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Finish\u003c\/strong\u003e: TiAlN and TiCrAlN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 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: SANDVIK COROMANT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5757893\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51731906101554,"sku":"5757893","price":607.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cd94e254890a5252541427527eff509e_fd503c55-fb8b-4a45-bda2-84b0f6b9057e.jpg?v=1788736386","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-5757893-threading-insert-12-tpi-un","provider":"Voomi Supply","version":"1.0","type":"link"}