{"product_id":"sandvik-coromant-5961386-threading-toolholder-5-8-in-shank","title":"Sandvik Coromant 5961386 Threading Toolholder 5\/8 in Shank","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 5961386 is a right-hand indexable threading toolholder designed for both internal and external threading operations on CNC lathes and turning centers. Part of the CoroThread 266 series, it accepts 266RL to 16 inserts secured by screw clamping. The shank measures 14.30 mm in height by 0.625 inches in diameter, with an overall length of 8.0 inches. Minimum bore diameter is 0.79 inches, making it suitable for threading in moderately tight bores. Coolant-through capability is built in, supporting chip evacuation and tool life in continuous threading cuts. The toolholder body is machined from steel for rigidity under the interrupted-cut loads common in threading applications.\u003c\/p\u003e\n\u003cp\u003eThis toolholder is used in production and job-shop turning environments where reliable, repeatable thread form on both OD and ID features is required. The 266RKF toolholder style is matched to the CoroThread 266 system, which is engineered for single-pass and multi-pass threading strategies on ferrous and non-ferrous materials. Typical install scenarios include gang-tool setups, turret-mounted configurations, and live-tool lathes where a compact, consistent threading unit is needed. The 3\/8-inch insert inscribed circle provides enough cutting edge length for standard thread pitches encountered in general machining.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eAccepts 266RL to 16 threading inserts via screw-clamp holding method\u003c\/li\u003e\n  \u003cli\u003eHandles both internal and external threading from a single toolholder style\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design aids chip control and extends insert life during threading\u003c\/li\u003e\n  \u003cli\u003eSteel body construction provides rigidity and dimensional stability under cutting loads\u003c\/li\u003e\n  \u003cli\u003e0.79-inch minimum bore diameter supports threading in restricted internal features\u003c\/li\u003e\n  \u003cli\u003e8.0-inch overall length with 1.875-inch head length suits standard turret reach requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with 266RL to 16 series threading inserts within the SANDVIK COROMANT CoroThread 266 system. Insert inscribed circle is 3\/8 inch (0.375 inches). Confirm turret bore and shank diameter clearance before installation.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a qualified machinist or CNC tooling technician. Ensure the machine is powered down and the turret is in a safe index position before mounting or removing the toolholder. Torque the insert-retention screw to the insert manufacturer's specification using the correct Torx or hex key — do not overtighten. Verify coolant-through port alignment with the machine turret coolant supply before engaging the coolant system.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: CoroThread 266\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eToolholder Style\u003c\/strong\u003e: 266RKF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal and External\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHand of Holder\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.625 inches (5\/8 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Height\u003c\/strong\u003e: 14.30 mm (0.563 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 8.0 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 8.0 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Length\u003c\/strong\u003e: 1.875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.79 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Inscribed Circle\u003c\/strong\u003e: 0.375 inches (3\/8 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCenter to Cutting Edge\u003c\/strong\u003e: 0.472 inches (11.99 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 1.875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eToolholder Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.65 pounds\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: SANDVIK COROMANT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 5961386\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51727367274802,"sku":"5961386","price":350.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c890bb12bd014e2c875cb1b7f4d09052.jpg?v=1788676814","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-5961386-threading-toolholder-5-8-in-shank","provider":"Voomi Supply","version":"1.0","type":"link"}