{"product_id":"vargus-51591-laydown-threading-insert-3er20un-vtx-20-tpi","title":"Vargus 51591 Laydown Threading Insert 3ER20UN Vtx 20 Tpi","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VARGUS 51591 is a solid carbide laydown threading insert designed for right-hand external UN thread cutting at 20 threads per inch (TPI). Manufactured in the 3ER insert style with a VTX grade designation, it carries a PVD-applied TiAlN coating for thermal resistance and extended tool life across a wide range of workpiece materials. The inscribed circle measures 9.53 mm (3\/8 inch) and the insert thickness is 3.60 mm. This insert is intended for use on CNC lathes and turning centers by machinists and toolroom professionals performing precision external thread operations.\u003c\/p\u003e\n\u003cp\u003eThe 51591 is suited for external UN thread applications on materials spanning steel, stainless steel, cast iron, aluminum, non-ferrous alloys, and heat-resistant superalloys, corresponding to workpiece material codes H, K, M, N, P, and S. The 60-degree included angle and single tooth per side design make it appropriate for standard unified national thread forms in production and job-shop turning environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide substrate with PVD TiAlN coating for wear resistance across diverse workpiece materials\u003c\/li\u003e\n  \u003cli\u003e3ER insert style, size code 3, with 60-degree included angle for UN thread form accuracy\u003c\/li\u003e\n  \u003cli\u003e20 TPI cutting geometry for right-hand external UN threads\u003c\/li\u003e\n  \u003cli\u003eInscribed circle of 9.53 mm (3\/8 inch) for standard toolholder compatibility\u003c\/li\u003e\n  \u003cli\u003eUniversal primary workpiece material rating covering ferrous, non-ferrous, and superalloy materials\u003c\/li\u003e\n  \u003cli\u003eMeets ANSI B1.1:74 thread standard and manufactured under ISO 9001:2008 quality system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement threading insert for toolholders accepting 3ER-style laydown inserts with a 3\/8-inch inscribed circle. Specific toolholder compatibility should be verified against the toolholder manufacturer's insert specification chart.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and indexing of threading inserts should be performed by qualified machinists with the machine in a fully locked-out and tagged-out state. Seat the insert firmly in the pocket and torque the clamp screw using the toolholder manufacturer's specified wrench to avoid cracking the carbide substrate. Inspect the insert pocket for chips or debris before seating. Follow your facility's applicable machining safety procedures and toolholder OEM guidelines when setting cutting parameters.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: 3ER\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 3\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: VTX\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating \/ Finish\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating Process\u003c\/strong\u003e: PVD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UN (ANSI B1.1:74)\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: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads Per Inch\u003c\/strong\u003e: 20 TPI\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: 9.53 mm (3\/8 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 3.60 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Teeth Per Side\u003c\/strong\u003e: 1\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\u003eWeight\u003c\/strong\u003e: 0.03 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuality Standard\u003c\/strong\u003e: ISO 9001:2008\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23291804\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: VARGUS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 51591\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VARGUS","offers":[{"title":"Default Title","offer_id":67912950513970,"sku":"51591","price":316.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f713f09d129293ba4eb8c205c710a302_a52dda9b-9b3e-4ae4-a12d-fdd9de45ea39.jpg?v=1791241065","url":"https:\/\/voomisupply.com\/products\/vargus-51591-laydown-threading-insert-3er20un-vtx-20-tpi","provider":"Voomi Supply","version":"1.0","type":"link"}