{"product_id":"iscar-5903406-threading-insert-18-tpi-3-8-in-ic808-carbide","title":"Iscar 5903406 Threading Insert 18 Tpi 3\/8 in IC808 Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ISCAR 5903406 is a solid carbide laydown threading insert designed for internal UN thread cutting at 18 threads per inch (TPI). Carrying the IC808 manufacturer grade and applied with a PVD TiAlN coating, this insert is engineered for demanding threading operations across a wide range of workpiece materials. The right-hand configuration and 16IRM insert style position it for standard internal threading applications in CNC lathes and turning centers. With a 3\/8 inch inscribed circle and a 0.143 inch thickness, the insert fits toolholders dimensioned to the 16-series standard. The M chipbreaker geometry supports consistent chip control during threading passes.\u003c\/p\u003e\u003cp\u003eThis insert is suited for internal UN thread production in machining environments where surface finish, tool life, and repeatability are priorities. The IC808 grade with PVD coating performs across the H, K, M, N, P, and S workpiece material codes, covering steels, stainless steels, cast irons, non-ferrous metals, and high-temperature alloys. Machinists and CNC operators in production shops, job shops, and maintenance machining operations are the typical end users. The insert complies with ISO 13399 standards for cutting tool data representation.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction with PVD-applied TiAlN coating for extended tool life\u003c\/li\u003e\n\u003cli\u003eIC808 grade rated for universal workpiece material compatibility across H, K, M, N, P, and S material codes\u003c\/li\u003e\n\u003cli\u003e18 TPI internal UN thread form, right-hand cut\u003c\/li\u003e\n\u003cli\u003e3\/8 inch (0.375 inch) inscribed circle, fits 16-series toolholders\u003c\/li\u003e\n\u003cli\u003eM chipbreaker geometry for controlled chip evacuation during threading\u003c\/li\u003e\n\u003cli\u003eISO 13399 compliant insert data for toolholder pairing and CAM integration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a laydown threading insert for 16IRM-style internal threading toolholders accepting a 3\/8 inch inscribed circle insert. Verify toolholder seat geometry and clamping style before installation. No specific compatible model numbers were provided in the product data.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC operator. Power down and lock out the machine spindle before seating or removing inserts. Use the correct torque wrench and manufacturer-specified fastener to secure the insert in the toolholder pocket — over-torquing can crack the carbide seat. Inspect the insert pocket and clamping screw for wear or debris before each insert change.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: 16IRM\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: IC808\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN, PVD Process\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: Internal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreads Per Inch\u003c\/strong\u003e: 18 TPI\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChipbreaker\u003c\/strong\u003e: M\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: 0.1430 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.0030 inches (0.08 mm)\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\u003eStandard\u003c\/strong\u003e: ISO 13399\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.051 pounds\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: 5\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ISCAR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5903406\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ISCAR","offers":[{"title":"Default Title","offer_id":51731630686514,"sku":"5903406","price":163.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/95a9711d2541512710c6e5754671e9ff.jpg?v=1788733358","url":"https:\/\/voomisupply.com\/products\/iscar-5903406-threading-insert-18-tpi-3-8-in-ic808-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}