{"product_id":"kennametal-1724735-threading-insert-20-tpi-3-8-in-ic-un","title":"Kennametal 1724735 Threading Insert 20 Tpi 3\/8 in Ic Un","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 1724735 is a solid carbide laydown threading insert designed for external UN thread cutting at 20 threads per inch (TPI). Carrying the KC5025 manufacturer grade with a PVD-applied TiAlN coating, this insert delivers wear resistance and thermal stability during threading operations on steel, stainless steel, cast iron, superalloys, and titanium. The insert features an ER-style geometry, a 3\/8 inch (9.53 mm) inscribed circle, and a thickness of 0.143 inches (3.44 mm). It is installed by machinists and CNC lathe operators performing precision external thread turning on production or job-shop components.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for external UN threading applications on lathes and turning centers in both production and maintenance machining environments. The right-hand cutting orientation makes it appropriate for standard right-hand thread profiles. Primary workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium, making it a versatile threading solution across industries such as aerospace, oil and gas, and general manufacturing. ISO code LT16ER20UN identifies the insert geometry and thread specification for direct replacement ordering.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eKC5025 carbide grade with PVD TiAlN coating for extended tool life on difficult materials\u003c\/li\u003e\n  \u003cli\u003e20 TPI UN external thread profile, right-hand cutting orientation\u003c\/li\u003e\n  \u003cli\u003e3\/8 inch inscribed circle for secure, repeatable seating in compatible toolholders\u003c\/li\u003e\n  \u003cli\u003eSolid carbide substrate provides rigidity and dimensional consistency during threading passes\u003c\/li\u003e\n  \u003cli\u003eCompatible with steel, stainless steel, cast iron, superalloys, and titanium workpiece materials\u003c\/li\u003e\n  \u003cli\u003eISO code LT16ER20UN enables direct cross-reference and replacement sourcing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-fit replacement for LT16ER20UN-specified toolholders accepting ER-style laydown threading inserts with a size code 16 and 3\/8 inch inscribed circle. Confirm toolholder specifications before ordering.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists following standard CNC or manual lathe insert-change procedures. Power down and lock out the spindle before removing or seating the insert. Use a calibrated torque wrench per the toolholder manufacturer specifications when securing the clamping screw — do not overtighten, as carbide inserts are brittle and subject to fracture under excessive clamping force. Verify insert seating and alignment before resuming cutting operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: LT16ER20UN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: ER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 16\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UN External\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads Per Inch\u003c\/strong\u003e: 20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Right Hand\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: 0.143 inches (3.44 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.1551 inches (3.94 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Edge to Theoretical Edge Length\u003c\/strong\u003e: 0.0310 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFace of Insert to Tip Centerline\u003c\/strong\u003e: 0.0350 inches\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: KC5025\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Steel, Stainless Steel, Cast Iron, Superalloys, Titanium\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.022 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: KENNAMETAL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1724735\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51747815457074,"sku":"1724735","price":620.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a50131ef30c62f1c02bb3c70a22aa8be.jpg?v=1788885821","url":"https:\/\/voomisupply.com\/products\/kennametal-1724735-threading-insert-20-tpi-3-8-in-ic-un","provider":"Voomi Supply","version":"1.0","type":"link"}