{"product_id":"seco-00046738-threading-insert-20-tpi-left-hand-un-cp500","title":"Seco 00046738 Threading Insert 20 Tpi Left Hand Un CP500","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SECO 00046738 is a laydown threading insert designed for external UN thread turning operations. Built from solid carbide with a micrograin substrate and CP500 manufacturer grade, it carries a PVD-applied TiAlN\/TiN coating for extended tool life across a broad range of workpiece materials. The insert produces left-hand external UN threads at 20 threads per inch (TPI) with a 60-degree included angle. It features a 3\/8 inch (0.3750 inch decimal) inscribed circle and a thickness of 0.1366 inches. This insert belongs to the Snap Tap series and is sized under the 16EL insert style code. It is installed by machinists and CNC lathe operators in production and job-shop environments.\u003c\/p\u003e\u003cp\u003eThis threading insert is suited for turning left-hand external UN threads on a wide range of workpiece materials. The primary workpiece material codes K, M, N, P, and S indicate universal applicability across cast iron, stainless steel, non-ferrous metals, steel, and heat-resistant superalloys. Typical applications include threaded fastener production, fixture components, and hydraulic fittings requiring left-hand UN thread forms. The insert conforms to ISO standards for laydown threading insert geometry.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide micrograin substrate with CP500 grade for wear resistance\u003c\/li\u003e\n\u003cli\u003ePVD TiAlN\/TiN coating for extended cutting life and thermal resistance\u003c\/li\u003e\n\u003cli\u003eLeft-hand external UN thread form at 20 TPI with 60-degree included angle\u003c\/li\u003e\n\u003cli\u003e3\/8 inch inscribed circle (0.3750 inch decimal) — 16EL insert style\u003c\/li\u003e\n\u003cli\u003e0.1366 inch insert thickness for rigid laydown toolholder seating\u003c\/li\u003e\n\u003cli\u003eISO-standard geometry compatible with Snap Tap series toolholders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in Snap Tap series laydown threading toolholders accepting 16EL style inserts. Specific toolholder compatibility should be confirmed against SECO Snap Tap series holder specifications prior to ordering.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThreading inserts are installed and indexed by machinists operating CNC or manual lathes. Power down and lock out the machine spindle before changing or indexing inserts. Use the appropriate torque wrench or insert clamping screw driver specified for the toolholder to secure the insert — do not overtighten or use impact tools on clamping screws. Confirm thread direction and insert hand orientation match the programmed toolpath before commencing the cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: 16EL\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\u003eMaterial Grade\u003c\/strong\u003e: Micrograin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: CP500\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN\/TiN (PVD Coated)\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: Left Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads Per Inch\u003c\/strong\u003e: 20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 60 degrees\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: 0.1366 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0060 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Snap Tap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ISO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material Codes\u003c\/strong\u003e: K, M, N, P, S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Order Quantity\u003c\/strong\u003e: 2\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: SECO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 00046738\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SECO TOOLS","offers":[{"title":"Default Title","offer_id":51562400710962,"sku":"00046738","price":101.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/79e575cdeb8c06d35b75572cc088cff3_fe1caa49-659c-46fa-ac9a-e7d455e2d44d.jpg?v=1786476380","url":"https:\/\/voomisupply.com\/products\/seco-00046738-threading-insert-20-tpi-left-hand-un-cp500","provider":"Voomi Supply","version":"1.0","type":"link"}