{"product_id":"carmex-16er18unmxc-g-threading-insert-18-tpi-3-8-in-external-un","title":"Carmex 16ER18UNMXC\/G Threading Insert 18 Tpi 3\/8 in External Un","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CARMEX 16ER18UNMXC\/G is a laydown threading insert designed for external UN thread cutting at 18 threads per inch (TPI). Manufactured from solid carbide with a micrograin substrate, this insert carries a PVD-applied TiN coating for wear resistance and longer tool life. It features a 3\/8 inch inscribed circle, a thickness of 0.146 inches, and a 60-degree included angle standard to UN thread profiles. The right-hand orientation suits conventional external threading operations on CNC lathes and manual turning centers. Machinists and toolroom technicians install this insert into compatible 16ER toolholders for single-point threading passes on a range of workpiece materials.\u003c\/p\u003e\u003cp\u003eThis insert is suited for external UN threading applications across residential, commercial, and industrial machining environments. Its universal primary workpiece material rating makes it applicable across steel, stainless steel, cast iron, non-ferrous metals, high-temperature alloys, and other common turned materials. Typical use cases include threading fastener blanks, fittings, and hydraulic components on production or job-shop turning equipment. The MXC grade designation indicates CARMEX micrograin carbide construction optimized for threading consistency and edge integrity.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide micrograin substrate for edge stability in threading applications\u003c\/li\u003e\n\u003cli\u003ePVD TiN coating applied for improved wear resistance and surface finish on the thread form\u003c\/li\u003e\n\u003cli\u003e18 TPI UN thread standard with 60-degree included angle for precise unified national thread form\u003c\/li\u003e\n\u003cli\u003e3\/8 inch inscribed circle (0.3750 inches) fits standard 16ER toolholder pockets\u003c\/li\u003e\n\u003cli\u003eRight-hand external orientation for conventional single-point threading cuts\u003c\/li\u003e\n\u003cli\u003eUniversal workpiece material compatibility covering steel, stainless, cast iron, non-ferrous, and superalloys\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in 16ER-style laydown threading toolholders. Consult your toolholder manufacturer specifications to confirm pocket geometry and clamping compatibility before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis insert is installed by a machinist or toolroom technician into a compatible 16ER threading toolholder. Power down and lock out the turning machine before changing inserts. Use the appropriate torx or hex key to secure the clamping screw to the toolholder manufacturer recommended procedure  -  do not overtighten. Verify thread form and pitch with a thread gauge after the first pass before committing to full production runs.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: 16ER\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 (MXC)\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\u003eThreads Per Inch\u003c\/strong\u003e: 18 TPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 60 degrees\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 (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\u003c\/strong\u003e: TiN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Universal (H, K, M, N, P, S)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: CE, ISO 13485:2016, ISO 14001:2015, ISO 45001\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: CARMEX\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 16ER18UNMXC\/G\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CARMEX","offers":[{"title":"Default Title","offer_id":52104484749618,"sku":"16ER18UNMXC\/G","price":289.11,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ff0a0d83f99a9bcc4510553f86ba8b83.jpg?v=1790072033","url":"https:\/\/voomisupply.com\/products\/carmex-16er18unmxc-g-threading-insert-18-tpi-3-8-in-external-un","provider":"Voomi Supply","version":"1.0","type":"link"}