{"product_id":"hertel-16ir18unjhg225t-threading-insert-18-tpi-3-8-ic","title":"Hertel 16IR18UNJHG225T Threading Insert 18 Tpi 3\/8 Ic","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 16IR18UNJHG225T is a solid carbide laydown threading insert designed for internal UNJ thread cutting at 18 threads per inch. Built to the HG225TR grade specification with a PVD-applied TiAlN coating, this insert delivers reliable wear resistance and thermal stability in demanding threading operations. It features a 3\/8-inch inscribed circle and a thickness of 0.146 inches. The right-hand orientation makes it suitable for standard internal thread applications in CNC turning centers and manual lathes. Machinists and toolroom professionals working with aerospace-grade UNJ thread standards will find this insert fits directly into compatible 16IR toolholders.\u003c\/p\u003e\n\u003cp\u003eThis insert is used for internal UNJ thread profiles on CNC lathes and turning centers where tight thread-form accuracy is required. The UNJ thread standard, which features a controlled root radius, is commonly specified in aerospace and high-stress fastener applications. The TiAlN coating supports higher cutting speeds and extended tool life when threading alloy steels, stainless steels, and similar materials. This is a single-insert package sold in minimum quantities of 10 units.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide substrate with PVD TiAlN coating for heat and wear resistance\u003c\/li\u003e\n  \u003cli\u003e18 TPI internal UNJ thread form with controlled root radius geometry\u003c\/li\u003e\n  \u003cli\u003eRight-hand cutting orientation for standard internal threading applications\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch inscribed circle fits 16IR-style toolholders\u003c\/li\u003e\n  \u003cli\u003eHG225TR manufacturer grade for consistent thread-form accuracy\u003c\/li\u003e\n  \u003cli\u003e0.146-inch insert thickness for stable seating in laydown-style pockets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-fit replacement for 16IR-style laydown threading insert pockets on CNC turning and manual lathe toolholders configured for internal UNJ threading applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the toolholder is secured before seating or replacing the insert. Use the correct torx or clamping screw torque as specified by the toolholder manufacturer — do not overtighten, as solid carbide inserts are brittle and susceptible to cracking under uneven clamping force. Verify insert orientation and thread hand before resuming cutting operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: 16IR\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: HG225TR\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNJ\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: 18\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 3\/8 inch (0.3750 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.1460 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 0.75 x 0.75 x 0.4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.4 pounds\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: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 16IR18UNJHG225T\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51737921356082,"sku":"16IR18UNJHG225T","price":297.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f4bb10176c486a6292c93d3b3b2bab91.jpg?v=1788795087","url":"https:\/\/voomisupply.com\/products\/hertel-16ir18unjhg225t-threading-insert-18-tpi-3-8-ic","provider":"Voomi Supply","version":"1.0","type":"link"}