{"product_id":"iscar-5901581-threading-insert-18-tpi-un-solid-carbide","title":"Iscar 5901581 Threading Insert 18 Tpi Un Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ISCAR 5901581 is a solid carbide laydown threading insert designed for internal UN thread cutting at 18 threads per inch. Manufactured in the 16IR insert style, it carries the IC908 grade with a PVD-applied TiAlN coating for wear resistance across a broad range of workpiece materials. The insert features a 3\/8 inch (0.375 inch decimal) inscribed circle and a thickness of 0.143 inches. The M chipbreaker geometry supports controlled chip evacuation during threading operations. This insert is used by machinists and toolroom technicians working on CNC lathes and manual turning centers where consistent internal thread form and tool life are priorities.\u003c\/p\u003e\u003cp\u003eThis insert is suited for right-hand internal UN threading applications across universal workpiece material categories including ferrous, non-ferrous, stainless, heat-resistant alloys, and cast materials. It fits standard 16IR toolholders used in production threading on CNC turning equipment. The IC908 grade is positioned for moderate to high cutting speeds where PVD coating provides thermal and abrasion resistance. This insert is sold individually but is subject to a minimum order quantity of 5 pieces.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eIC908 grade solid carbide with PVD TiAlN coating for extended tool life\u003c\/li\u003e\n\u003cli\u003e16IR insert style, right-hand cut for internal UN threads\u003c\/li\u003e\n\u003cli\u003e18 TPI thread form for standard UN fastener and component threading\u003c\/li\u003e\n\u003cli\u003e3\/8 inch inscribed circle (0.3750 inch decimal) for compatibility with 16IR toolholders\u003c\/li\u003e\n\u003cli\u003eM chipbreaker geometry for controlled chip formation during threading passes\u003c\/li\u003e\n\u003cli\u003eCompatible with universal workpiece material codes H, K, M, N, P, and S\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard 16IR threading toolholders. Compatible with workpiece material grades C1, C2, C6, and C7 and universal material categories coded H, K, M, N, P, and S. Conforms to ISO 13399 tooling data standards.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and replacement of threading inserts should be performed by a qualified machinist with the machine powered down and the spindle locked. Use the correct torx or clamp screw driver specified for the toolholder to seat the insert properly without over-torquing the clamping mechanism. Inspect the toolholder pocket and clamping components for wear or debris before seating the insert. Verify thread form and pitch against workpiece requirements before beginning a production run.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: 16IR\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: IC908\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C1, C2, C6, C7\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 decimal)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 0.143 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.08 mm\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: TiAlN Coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Universal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: ISCARTHREAD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: ISO 13399\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\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 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: ISCAR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5901581\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ISCAR","offers":[{"title":"Default Title","offer_id":51728685891890,"sku":"5901581","price":150.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cf81c5197ba7b0b66a162cbe5b38c58f.jpg?v=1788694992","url":"https:\/\/voomisupply.com\/products\/iscar-5901581-threading-insert-18-tpi-un-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}