{"product_id":"sandvik-coromant-5742008-threading-toolholder-internal-external","title":"Sandvik Coromant 5742008 Threading Toolholder Internal External","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SANDVIK COROMANT 5742008 is a steel indexable threading toolholder designed for both internal and external threading operations on CNC lathes and turning centers. It features a right-hand orientation and uses a clamp-and-screw insert holding method to secure R166.0L to 11 series inserts. The 1\/2-inch round shank and 8-inch overall length make it well suited for through-bore and face threading applications where reach and rigidity are critical. Weighing 0.71 pounds, it is part of the T-Max U-Lock series, built for consistent thread form accuracy across production runs. Machinists and CNC turning specialists are the primary installers of this toolholder.\u003c\/p\u003e\n\u003cp\u003eThis toolholder is used in production and job-shop turning environments where threading versatility is required. Its dual internal and external threading capability reduces tooling changeover time on multi-setup jobs. With a minimum bore diameter of 0.63 inches and a head length of 3 inches, it handles a range of bore depths common in shaft, coupling, and fitting applications. The 0.25-inch insert inscribed circle size is appropriate for fine-pitch and standard threading work on ferrous and non-ferrous materials. It is suited for both manual and automated CNC turning programs.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDual-purpose design supports both internal and external threading from a single toolholder\u003c\/li\u003e\n  \u003cli\u003eClamp-and-screw insert holding method for positive insert retention under threading loads\u003c\/li\u003e\n  \u003cli\u003eCompatible with R166.0L to 11 insert series for broad thread profile coverage\u003c\/li\u003e\n  \u003cli\u003e1\/2-inch shank diameter with 8-inch overall length for extended reach applications\u003c\/li\u003e\n  \u003cli\u003eMinimum bore diameter of 0.63 inches accommodates small-to-mid bore threading\u003c\/li\u003e\n  \u003cli\u003eSteel construction provides rigidity and durability in continuous turning operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with R166.0L to 11 series threading inserts with a 1\/4-inch inscribed circle. Toolholder style is R166.0KF..C within the T-Max U-Lock series.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by CNC machinists or tool-and-die professionals in a lathe or turning center setup. Power down and lock out the spindle before changing or indexing inserts. Ensure the shank is fully seated and clamped in the turret or toolpost to the machine manufacturer's torque specification. Inspect the insert seat and clamping components for wear or debris before each insert change.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\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\u003eToolholder Style\u003c\/strong\u003e: R166.0KF..C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: T-Max U-Lock\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: R166.0L to 11\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp and Screw\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInsert Inscribed Circle\u003c\/strong\u003e: 1\/4 inch (0.25 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/2 inch (0.5 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Height\u003c\/strong\u003e: 0.4843 inches (12.30 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.63 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBack of Bar to Cutting Edge\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCenter to Cutting Edge\u003c\/strong\u003e: 0.354 inches (8.99 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.71 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: 5742008\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SANDVIK COROMANT","offers":[{"title":"Default Title","offer_id":51740158427442,"sku":"5742008","price":937.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b9e65b7fcaec312f27431b7c49d34e2f_601adb75-7527-495b-9c40-5474f56eec92.jpg?v=1788823013","url":"https:\/\/voomisupply.com\/products\/sandvik-coromant-5742008-threading-toolholder-internal-external","provider":"Voomi Supply","version":"1.0","type":"link"}