{"product_id":"kennametal-1743900-threading-insert-28-tpi-1-4-in-kc5025","title":"Kennametal 1743900 Threading Insert 28 Tpi 1\/4 in KC5025","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 1743900 is a solid carbide laydown threading insert in ISO style LT11NR28UN, designed for right-hand internal UN thread cutting at 28 threads per inch (TPI). Carrying the KC5025 manufacturer grade, this insert features a PVD-applied TiAlN coating for improved wear resistance and thermal stability during threading operations. With a 1\/4-inch (6.35 mm) inscribed circle and a thickness of 0.1260 inches (3.04 mm), it is sized for use in compatible laydown threading toolholders on CNC lathes and turning centers. It is installed by machinists and tooling technicians performing precision internal threading work.\u003c\/p\u003e\u003cp\u003eThis insert is suited for internal UN thread-form cutting operations on a range of workpiece materials including steel, stainless steel, cast iron, superalloys, and titanium. The 28 TPI specification makes it a standard choice for fine-pitch internal threading applications in production and job-shop environments where consistent thread form and tool life are priorities. The right-hand cutting orientation fits standard internal threading toolholder setups on turning equipment.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eISO style LT11NR28UN — right-hand, internal UN thread, 28 TPI\u003c\/li\u003e\n\u003cli\u003eKC5025 grade solid carbide with PVD TiAlN coating for wear and heat resistance\u003c\/li\u003e\n\u003cli\u003e1\/4-inch (6.35 mm) inscribed circle for compatibility with size 11 laydown toolholders\u003c\/li\u003e\n\u003cli\u003eRated for steel, stainless steel, cast iron, superalloys, and titanium workpiece materials\u003c\/li\u003e\n\u003cli\u003eHole diameter of 0.1280 inches (3.25 mm) for secure clamping in toolholder\u003c\/li\u003e\n\u003cli\u003eCutting edge to theoretical edge length of 0.0240 inches; face of insert to tip centerline of 0.0270 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement laydown threading insert for size 11 NR-style internal threading toolholders accepting LT11NR28UN inserts. Compatible workpiece materials include steel, stainless steel, cast iron, superalloys, and titanium.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis insert is installed and replaced by qualified machinists or tooling technicians. Power down and lock out the machine before any insert change. Use the appropriate torx or hex key as specified by the toolholder manufacturer to secure the clamping screw to the correct seating torque per the toolholder documentation. Inspect the insert pocket and seating surface for chips or damage before seating the new insert to ensure proper tool geometry and thread accuracy.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eISO Code\u003c\/strong\u003e: LT11NR28UN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: KC5025\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: NR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\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\u003eThread Standard\u003c\/strong\u003e: UN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal\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: 28 TPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 1\/4 inch (6.35 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.1260 inches (3.04 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.1280 inches (3.25 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Edge to Theoretical Edge Length\u003c\/strong\u003e: 0.0240 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFace of Insert to Tip Centerline\u003c\/strong\u003e: 0.0270 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel; Stainless Steel; Cast Iron; Superalloys and Titanium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0037 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: KENNAMETAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1743900\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51755701829938,"sku":"1743900","price":72.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d107479fa671a0282cd7a056784ac4eb.jpg?v=1788958348","url":"https:\/\/voomisupply.com\/products\/kennametal-1743900-threading-insert-28-tpi-1-4-in-kc5025","provider":"Voomi Supply","version":"1.0","type":"link"}