{"product_id":"hertel-h59873349-boring-insert-triangle-solid-carbide","title":"Hertel H59873349 Boring Insert Triangle Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL H59873349 is a solid carbide boring insert designed for precision internal boring operations on CNC and manual lathes. It carries the TDHB insert style designation and is manufactured to size code 1.280.75.0.1 in grade HT540B, an uncoated carbide grade suited for a range of ferrous and non-ferrous materials. The insert features a 60-degree triangle (triangular) shape with a 15-degree relief angle and a 0.002 inch corner radius, making it appropriate for finish and semi-finish boring passes where dimensional accuracy is critical. Screw-on insert holding provides secure, repeatable positioning in compatible boring toolholders.\u003c\/p\u003e\u003cp\u003eThis insert is used in precision boring applications across metalworking shops, tool rooms, and production machining environments. It fits boring bars and toolholders designed to accept TDHB-style triangle inserts. Typical applications include internal diameter finishing on steel, cast iron, and similar workpiece materials where tight tolerances and consistent surface finish are required. The uncoated HT540B grade is commonly selected for lower cutting speeds and materials where a coated grade is not preferred.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction in material grade C1 for wear resistance and edge stability\u003c\/li\u003e\n\u003cli\u003eUncoated HT540B grade suited for finish boring at controlled cutting parameters\u003c\/li\u003e\n\u003cli\u003e60-degree triangle (TDHB) insert shape with 15-degree relief angle for clearance in bore entry\u003c\/li\u003e\n\u003cli\u003e0.002 inch corner radius for tight-tolerance finish boring\u003c\/li\u003e\n\u003cli\u003eScrew-on insert holding method for secure, repeatable seating in toolholder\u003c\/li\u003e\n\u003cli\u003eCompact geometry: 5\/32 inch (0.1563 inch) inscribed circle, 3\/64 inch (0.0469 inch) thickness\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement for TDHB-style boring insert seats accepting a 5\/32 inch inscribed circle triangle insert with screw-on holding. Confirm toolholder insert pocket specifications match insert size code 1.280.75.0.1 before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or tooling technician. Power down and lock out the machine before indexing or replacing inserts. Use the correct torque driver for the clamping screw to ensure proper seating without over-torquing the insert pocket. Inspect the insert pocket and seating surfaces for chips or debris before installing a new insert.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Style\u003c\/strong\u003e: TDHB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Size Code\u003c\/strong\u003e: 1.280.75.0.1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShape\u003c\/strong\u003e: Triangle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Angle\u003c\/strong\u003e: 60 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelief Angle\u003c\/strong\u003e: 15 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInscribed Circle\u003c\/strong\u003e: 5\/32 inch (0.1563 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThickness\u003c\/strong\u003e: 3\/64 inch (0.0469 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorner Radius\u003c\/strong\u003e: 0.002 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: C1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Grade\u003c\/strong\u003e: HT540B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 4 inches (L) x 1.5 inches (W) x 0.25 inches (H)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.03 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: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: H59873349\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51740649980210,"sku":"H59873349","price":310.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6b70a5c0fed124779b1f105e50a4e70a.jpg?v=1788826474","url":"https:\/\/voomisupply.com\/products\/hertel-h59873349-boring-insert-triangle-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}