{"product_id":"sandvik-coromant-5781940-threading-insert-8-16-tpi","title":"Sandvik Coromant 5781940 Threading Insert 8-16 Tpi","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 5781940 is a laydown threading insert from the CoroThread 266 series, designed for external thread cutting on metalworking lathes and turning centers. Built from solid carbide with a PVD-applied TiCrAlN\/TiN coating, this insert handles right-hand external 60-degree V threads across a range of 8 to 16 threads per inch (1.50 to 3.00 mm pitch). The 3\/8-inch (9.53 mm) inscribed circle and 5\/32-inch (0.1563 inch) thickness fit standard 266-series toolholders. A single cutting tooth per side and 0.0079-inch (0.20 mm) corner radius make it well suited for precision threading applications where thread form accuracy is critical. Licensed machinists and CNC turning technicians are the primary installers.\u003c\/p\u003e\n\u003cp\u003eThis insert is applied in external threading operations on a wide range of ferrous and non-ferrous workpiece materials in both production shop and job-shop environments. The TiCrAlN\/TiN PVD coating supports improved wear resistance and tool life across varying cutting conditions. The A chipbreaker geometry is appropriate for general-purpose threading passes. Compatible toolholders accept the 266 insert style with a 4.40 mm (0.1732 inch) mounting hole diameter. This insert ships individually but carries a minimum order quantity of 10 units per purchase.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide substrate with PVD TiCrAlN\/TiN coating for wear resistance\u003c\/li\u003e\n  \u003cli\u003eRight-hand external 60-degree V thread form, 8-16 TPI (1.50-3.00 mm pitch)\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch (9.53 mm) inscribed circle fits standard 266-series toolholders\u003c\/li\u003e\n  \u003cli\u003eCorner radius of 0.0079 inches (0.20 mm) for precise thread root form\u003c\/li\u003e\n  \u003cli\u003eA chipbreaker geometry suited for general external threading passes\u003c\/li\u003e\n  \u003cli\u003eManufacturer grade 1135 for defined cutting performance classification\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 that accept a 266-style insert with a 4.40 mm hole diameter and 3\/8-inch inscribed circle. Refer to the manufacturers toolholder selection guide using insert style code 266 and size code 16 to confirm holder compatibility before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or CNC turning technicians. Secure the insert in the designated 266-series pocketed toolholder using the correct clamping screw and torque procedure specified in the toolholder documentation. Ensure the machine spindle is fully stopped and the control is in a safe state before indexing or replacing inserts. Do not use damaged or chipped inserts, as degraded thread form can result in out-of-tolerance parts.\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\u003eSeries\u003c\/strong\u003e: CoroThread 266\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: 1135\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Right Hand External\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: 60 Degree V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads Per Inch\u003c\/strong\u003e: 8-16 TPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePitch\u003c\/strong\u003e: 1.50-3.00 mm\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: 0.1563 inches (3.97 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0079 inches (0.20 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\u003eIncluded Angle\u003c\/strong\u003e: 60 degrees\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: TiCrAlN\/TiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\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\u003eInsert Hand\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 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: 5781940\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51730480955698,"sku":"5781940","price":612.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5929439e42fa52d950984d662a610ba4_c1b99e8e-dda1-407a-97e0-bdcfdd3b64df.jpg?v=1788718213","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-5781940-threading-insert-8-16-tpi","provider":"Voomi Supply","version":"1.0","type":"link"}