{"product_id":"hertel-1000247-tnmg321r-ht10-carbide-turning-insert","title":"Hertel 1000247 TNMG321R HT10 Carbide Turning Insert","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL 1000247 is a solid carbide turning insert in the TNMG style, designed for precision external and internal turning operations on CNC and manual lathes. This insert features a 60-degree triangular shape with a neutral hand orientation, a 3\/8 inch inscribed circle (IC), and a 1\/64 inch corner radius. The bright, uncoated finish of the HT10 carbide grade makes it well suited for applications where coating would interfere with edge sharpness or where cutting temperatures are moderate. Insert thickness is 1\/8 inch and overall length is 0.65 inches. It is held in the toolholder via clamp and pin retention. Machinists and CNC operators install this insert as a direct drop-in for compatible TNMG toolholders.\u003c\/p\u003e\u003cp\u003eThis insert is rated for use on workpiece material codes N and S as primary designations, covering non-ferrous metals and heat-resistant superalloys, with secondary compatibility across material codes K and M, which include cast iron and stainless steel. The HT10 grade with G-style chip breaker geometry makes it a practical choice for light to medium roughing and finishing passes in general turning applications on production floors and job shops. The 0.0156 inch corner radius supports good surface finish while maintaining edge strength at moderate depths of cut.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTNMG insert style with 60-degree triangle shape and neutral hand for versatile toolholder compatibility\u003c\/li\u003e\n\u003cli\u003eHT10 solid carbide grade, bright uncoated finish for sharp edge retention at moderate cutting speeds\u003c\/li\u003e\n\u003cli\u003e3\/8 inch (0.375 inch) inscribed circle with 1\/8 inch insert thickness for stable seating in standard TNMG pockets\u003c\/li\u003e\n\u003cli\u003e1\/64 inch (0.0156 inch) corner radius for balanced surface finish and edge durability\u003c\/li\u003e\n\u003cli\u003eG-style chip breaker geometry suited to light roughing and finishing on non-ferrous, superalloy, cast iron, and stainless workpieces\u003c\/li\u003e\n\u003cli\u003eClamp and pin holding method for positive, repeatable insert location in the toolholder pocket\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement insert for standard TNMG toolholders accepting a 321 insert size code with clamp and pin retention. Verify toolholder pocket geometry, insert size code, and hand designation before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eTurning inserts are installed and indexed by qualified machinists or CNC tool-setup technicians. Power down and lock out the machine spindle before changing or indexing inserts. Use the appropriate torque wrench and clamp hardware specified by the toolholder manufacturer — do not overtighten the clamp screw, as this can fracture the carbide insert. Inspect the toolholder pocket for chips or debris before seating the insert to ensure proper contact and accurate tool-tip location.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: TNMG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Shape\u003c\/strong\u003e: Triangle (60 degrees)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: HT10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Hand\u003c\/strong\u003e: Neutral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 3\/8 inch (0.375 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Length\u003c\/strong\u003e: 0.65 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Thickness\u003c\/strong\u003e: 1\/8 inch (0.125 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 1\/64 inch (0.0156 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole Diameter\u003c\/strong\u003e: 0.150 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 0 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClearance Code\u003c\/strong\u003e: N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTolerance Code\u003c\/strong\u003e: M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChip Breaker\u003c\/strong\u003e: G\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp and Pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material Code\u003c\/strong\u003e: N, S\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecondary Workpiece Material Code\u003c\/strong\u003e: K, M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 321\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: 10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1 pound\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1000247\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51729740235058,"sku":"1000247","price":206.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2392f9da2ab923489dd72717316cd7b2.jpg?v=1788708767","url":"https:\/\/voomisupply.com\/products\/hertel-1000247-tnmg321r-ht10-carbide-turning-insert","provider":"Voomi Supply","version":"1.0","type":"link"}