{"product_id":"sandvik-coromant-5857576-threading-insert-12-tpi-un","title":"Sandvik Coromant 5857576 Threading Insert 12 Tpi Un","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SANDVIK COROMANT 5857576 is a solid carbide laydown threading insert designed for external UN thread cutting at 12 threads per inch (TPI). Part of the CoroThread 266 series, this insert features a TiCrAlN\/TiN PVD coating for wear resistance and thermal stability during threading operations. It carries a 60-degree included angle suited to unified thread profiles, with a 3\/8-inch (9.53 mm) inscribed circle and a thickness of 5\/32 inch (3.97 mm). Licensed machinists and CNC operators use this insert in indexable threading toolholders for external thread production on lathes and turning centers.\u003c\/p\u003e\u003cp\u003eThis insert is configured for right-hand external threading and is matched to the CoroThread 266 toolholder system. It uses the 266 insert style with a size code of 16 and an F chipbreaker geometry. The manufacturer grade 1135 with PVD-applied TiCrAlN\/TiN coating makes it appropriate for threading steel and similar materials where controlled chip formation and surface finish are priorities. Typical applications include production threading of fittings, fasteners, and threaded mechanical components in job shop and production turning environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide substrate with PVD TiCrAlN\/TiN coating for extended tool life\u003c\/li\u003e\n\u003cli\u003eRight-hand external UN thread profile at 12 TPI with 60-degree included angle\u003c\/li\u003e\n\u003cli\u003eF chipbreaker geometry for controlled chip evacuation during threading\u003c\/li\u003e\n\u003cli\u003e3\/8-inch inscribed circle and 5\/32-inch thickness for CoroThread 266 toolholder fitment\u003c\/li\u003e\n\u003cli\u003eSingle tooth per side design for precise thread form engagement\u003c\/li\u003e\n\u003cli\u003eManufacturer grade 1135 matched to PVD coating process for steel threading applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with SANDVIK COROMANT CoroThread 266 series indexable threading toolholders accepting 266-style inserts with a size code of 16. The catalog reference for this insert is 266RG-16UN01F120E 1135.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and indexing of threading inserts should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before seating or replacing inserts. Use the appropriate torx or hex key as specified by the toolholder manufacturer to achieve proper insert clamping without over-torquing the seating screw. Verify thread pitch and insert orientation against the toolholder documentation before resuming cutting operations.\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\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: 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: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads Per Inch\u003c\/strong\u003e: 12\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\u003eInscribed Circle\u003c\/strong\u003e: 3\/8 inch (9.53 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 5\/32 inch (3.97 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.1732 inch (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\u003eSeries\u003c\/strong\u003e: CoroThread 266\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.12 pounds\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: 5857576\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51737568346418,"sku":"5857576","price":614.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5929439e42fa52d950984d662a610ba4_23d56faa-9615-44d4-b868-4c64ce2c9007.jpg?v=1788790552","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-5857576-threading-insert-12-tpi-un","provider":"Voomi Supply","version":"1.0","type":"link"}