{"product_id":"sandvik-coromant-5857556-threading-insert-npt-11-5-tpi","title":"Sandvik Coromant 5857556 Threading Insert Npt 11.5 Tpi","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 5857556 is a solid carbide laydown threading insert designed for external NPT thread cutting at 11.5 threads per inch (TPI). Part of the CoroThread 266 series, it carries a TiCrAlN\/TiN coating applied via PVD process, delivering wear resistance suited to demanding threading applications. The insert features a right-hand cutting orientation and a 60-degree included angle, consistent with standard NPT thread form. With a 3\/8-inch inscribed circle and a thickness of 0.1563 inches (5\/32 inches), this insert fits compatible CoroThread 266 toolholders. It is installed by machinists and toolroom professionals on CNC lathes and turning centers performing pipe thread operations.\u003c\/p\u003e\u003cp\u003eThis insert is intended for external NPT threading operations in production and job-shop environments. The CoroThread 266 platform is commonly used on CNC turning equipment where repeatability and consistent thread form are required. The F chipbreaker geometry supports controlled chip evacuation during threading passes. The PVD-applied TiCrAlN\/TiN finish provides a combination of heat resistance and surface hardness suited to steel and alloy materials. Manufacturers catalog number for cross-reference is 266RG-16NT01F115E 1135.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide substrate with PVD-applied TiCrAlN\/TiN coating for extended tool life\u003c\/li\u003e\n\u003cli\u003eRight-hand external NPT thread form at 11.5 TPI with 60-degree included angle\u003c\/li\u003e\n\u003cli\u003eCoroThread 266 series insert with style code 266 and size code 16\u003c\/li\u003e\n\u003cli\u003eF chipbreaker geometry for controlled chip management during threading passes\u003c\/li\u003e\n\u003cli\u003e3\/8-inch (9.53 mm) inscribed circle; thickness of 0.1563 inches (3.97 mm)\u003c\/li\u003e\n\u003cli\u003eSingle tooth per side configuration for precise thread profile control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with compatible CoroThread 266 series toolholders accepting a 16-size laydown threading insert with a 0.1732-inch hole diameter. Refer to the manufacturers catalog number 266RG-16NT01F115E 1135 for toolholder matching.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInsert seating and clamping should be performed with the machine fully powered down and the spindle locked. Use the correct torque wrench and insert key specified for the CoroThread 266 toolholder to avoid seat damage or insert cracking. Verify insert orientation for right-hand cutting before engaging the threading cycle. Follow applicable shop safety procedures and machine manufacturer guidelines when setting tool offsets for NPT thread form.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\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\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\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\u003eThread Standard\u003c\/strong\u003e: NPT\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: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads Per Inch\u003c\/strong\u003e: 11.5 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: F\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\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\u003eHole Diameter\u003c\/strong\u003e: 0.1732 inches (4.40 mm)\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: 0.12 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: SANDVIK COROMANT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5857556\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51755249795378,"sku":"5857556","price":614.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5929439e42fa52d950984d662a610ba4_796ec0ca-5dda-4f29-87f8-cd10cdb3baf6.jpg?v=1788952651","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-5857556-threading-insert-npt-11-5-tpi","provider":"Voomi Supply","version":"1.0","type":"link"}