{"product_id":"sandvik-coromant-5757691-threading-insert-16-tpi-un","title":"Sandvik Coromant 5757691 Threading Insert 16 Tpi Un","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 5757691 is a laydown threading insert designed for cutting external UN threads on a lathe or CNC turning center. Part of the CoroThread 266 series, this solid carbide insert carries a dual PVD coating of TiCrAlN and TiAlN under manufacturer grade 1125, which provides wear resistance and thermal stability during threading operations. It produces a 60-degree included angle at 16 threads per inch and is configured for left-hand thread cutting. The inscribed circle measures 3\/8 inches and the insert thickness is 5\/32 inches. Typically installed by machinists and CNC operators in precision threading applications.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for external UN thread applications in metalworking environments, including production turning and job-shop threading operations. The left-hand orientation makes it appropriate for reverse-thread workpieces or left-hand spindle configurations. With a single tooth per side and an A-style chipbreaker, it is designed for controlled chip formation during threading passes on ferrous and non-ferrous materials. It fits insert-style toolholders compatible with the CoroThread 266 series using a 0.1732-inch hole diameter.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide substrate with PVD-applied TiCrAlN and TiAlN dual coating for extended tool life\u003c\/li\u003e\n  \u003cli\u003eLeft-hand, external UN thread configuration at 16 TPI with a 60-degree included angle\u003c\/li\u003e\n  \u003cli\u003eA-style chipbreaker for predictable chip control during threading passes\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch inscribed circle and 5\/32-inch thickness for precise insert seating\u003c\/li\u003e\n  \u003cli\u003eCoroThread 266 series insert compatible with corresponding 266-series toolholders\u003c\/li\u003e\n  \u003cli\u003eUNSPSC Code 23291804 for procurement and catalog classification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with CoroThread 266 series toolholders accepting a 266-style insert with a 0.1732-inch (4.40 mm) mounting hole. Manufacturer catalog number 266LG-16UN01A160M 1125 may be used for cross-reference with SANDVIK COROMANT tooling systems.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or CNC setup technicians. Power down and lock out the machine spindle before changing inserts. Use the appropriate SANDVIK COROMANT torx or insert-clamping key to seat the insert fully and evenly in the pocket. Verify insert orientation and thread hand before resuming cutting operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\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: External\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: 16\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\u003eNumber of Teeth Per Side\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN and TiCrAlN\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: CoroThread 266\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 3.74 inches L x 1.54 inches W x 0.43 inches H\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.13 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23291804\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: 5757691\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51729572593970,"sku":"5757691","price":616.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cd94e254890a5252541427527eff509e_d1eae114-3f94-44d6-9d1a-85b64caf8bb1.jpg?v=1788706287","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-5757691-threading-insert-16-tpi-un","provider":"Voomi Supply","version":"1.0","type":"link"}