{"product_id":"hertel-16el12unjhg225t-threading-insert-12-tpi-solid-carbide","title":"Hertel 16EL12UNJHG225T Threading Insert 12 Tpi Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 16EL12UNJHG225T is a laydown threading insert designed for left-hand external UNJ thread cutting applications. Manufactured from solid carbide and finished with a PVD-applied TiAlN coating, this insert delivers heat resistance and edge wear performance in demanding threading operations. It carries a 3\/8 inch inscribed circle (IC) and measures 0.146 inches thick. At 12 threads per inch (TPI), it is suited for precision UNJ-standard thread profiles commonly required in aerospace and high-strength fastener applications. Machining professionals and CNC operators specify this insert for its dimensional consistency and coating durability across production runs.\u003c\/p\u003e\u003cp\u003eThis insert is intended for use in CNC lathes and turning centers equipped with compatible 16 EL-style laydown toolholders. Left-hand configuration makes it appropriate for threading operations where the spindle direction or workpiece orientation requires a mirrored cutting approach. The UNJ thread standard, with its controlled root radius, is typically specified for aerospace, defense, and precision mechanical assemblies where fatigue resistance is critical. The HERTEL HG225TR grade is formulated for threading in steels and other ferrous materials under moderate to high cutting speeds.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and edge retention in threading operations\u003c\/li\u003e\n\u003cli\u003eTiAlN coating applied via PVD process for elevated heat resistance and extended tool life\u003c\/li\u003e\n\u003cli\u003eLeft-hand external thread orientation for mirrored or reverse-direction threading setups\u003c\/li\u003e\n\u003cli\u003eUNJ thread standard with controlled root radius suited for fatigue-critical assemblies\u003c\/li\u003e\n\u003cli\u003e12 TPI cutting geometry for consistent thread profile accuracy\u003c\/li\u003e\n\u003cli\u003e3\/8 inch inscribed circle for use in standard 16 EL-style laydown toolholders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in 16 EL-style laydown threading toolholders. Confirm toolholder pocket geometry and insert seating style before installation. No additional model-specific compatibility data was provided in the product input.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInsert installation should be performed by a qualified machinist or CNC tooling technician with the machine in a full stopped and locked-out state. Use the appropriate torx or hex key at the manufacturer-recommended seating method to secure the insert without over-torquing the clamping screw. Inspect the insert pocket for debris or damage before seating, as contamination can affect thread profile accuracy. Verify thread direction and insert hand orientation against the programmed toolpath before commencing any cutting operation.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: 16 EL\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: External\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads Per Inch\u003c\/strong\u003e: 12 TPI\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: 0.146 inches\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\u003eWidth\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 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\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 16EL12UNJHG225T\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51738785284402,"sku":"16EL12UNJHG225T","price":289.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/67e6c7fa610a9615f8e2b753aab4eb16.jpg?v=1788804430","url":"https:\/\/voomisupply.com\/products\/hertel-16el12unjhg225t-threading-insert-12-tpi-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}