{"product_id":"carmex-3-8exrh8nptp2-threading-insert-8-tpi-npt-carbide","title":"Carmex 3\/8EXRH8NPTP2 Threading Insert 8 Tpi Npt Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CARMEX 3\/8EXRH8NPTP2 is a laydown-style threading insert designed for cutting external NPT (National Pipe Taper) threads on CNC lathes and threading toolholders. It operates at 8 threads per inch (TPI) with a 30-degree included angle, conforming to the NPT thread standard. The insert is manufactured from solid carbide in grade P25C (material grade C5) and carries a PVD-applied TiN coating for extended tool life. With a 3\/8-inch inscribed circle and a thickness of 0.146 inches, it fits 16ER-series toolholders. Machinists and tool-and-die professionals use this insert for precision pipe thread production in a wide range of workpiece materials.\u003c\/p\u003e\n\u003cp\u003eThis insert is suited for external NPT threading operations in turning centers and manual lathes equipped with 16ER-style insert pockets. The P25C grade and universal workpiece material rating make it applicable across carbon steels, alloy steels, cast irons, non-ferrous metals, heat-resistant alloys, and stainless steels. It is a right-hand cutting insert, intended for conventional right-hand thread cutting passes. Typical applications include threading pipe fittings, couplings, and hydraulic components where NPT tapered thread form and sealing integrity are required.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e16ER laydown insert style fits standard 16ER-series external threading toolholders\u003c\/li\u003e\n  \u003cli\u003e8 TPI NPT thread form with 30-degree included angle for accurate taper pipe threads\u003c\/li\u003e\n  \u003cli\u003eSolid carbide construction in P25C grade for rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003ePVD TiN coating applied via physical vapor deposition for improved surface hardness and reduced friction\u003c\/li\u003e\n  \u003cli\u003eUniversal material rating covers steel, stainless, cast iron, non-ferrous, and superalloy workpieces\u003c\/li\u003e\n  \u003cli\u003eMeets CE, ISO 13485:2016, ISO 14001:2015, and ISO 45001 standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in 16ER-series external threading toolholders requiring a 3\/8-inch inscribed circle insert. Suitable for NPT thread cutting applications across the workpiece material codes H, K, M, N, P, and S as defined by the input data.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and indexing of carbide threading inserts should be performed by a qualified machinist with the machine spindle fully stopped and locked out. Use a calibrated torque wrench when seating the insert clamp screw to avoid cracking the carbide substrate. Verify toolholder pocket condition and seating surfaces before installing a new insert. Always confirm thread pitch, hand, and insert grade against the job specification before initiating a threading cycle.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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\u003eManufacturer Grade\u003c\/strong\u003e: P25C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads Per Inch\u003c\/strong\u003e: 8 TPI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: External\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 30 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: 0.1460 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: TiN Coated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material Codes\u003c\/strong\u003e: 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\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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: 3\/8EXRH8NPTP2\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CARMEX","offers":[{"title":"Default Title","offer_id":52069804376370,"sku":"3\/8EXRH8NPTP2","price":288.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5a3ef0e64e18393d6d62c3d3b8bc5236.jpg?v=1790048039","url":"https:\/\/voomisupply.com\/products\/carmex-3-8exrh8nptp2-threading-insert-8-tpi-npt-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}