{"product_id":"vargus-66238-internal-threading-toolholder-3-4-in-shank","title":"Vargus 66238 Internal Threading Toolholder 3\/4 in Shank","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VARGUS 66238 is a right-hand indexable threading toolholder designed for internal threading operations on CNC lathes and turning centers. Built to the NVRC toolholder style, it accepts 3IR insert geometry secured by a screw-clamp holding method. The shank measures 0.67 inches in height by 3\/4 inches in width, with an overall length of 7 inches. Coolant-through capability is built in, supporting chip evacuation and tool life when threading at depth. This toolholder is intended for use by machinists and CNC turning specialists working in production or job-shop environments.\u003c\/p\u003e\u003cp\u003eThis toolholder suits internal threading applications where bore access and rigidity are priorities. The minimum bore diameter is 0.67 inches, making it appropriate for threading in medium-diameter bores. The neck diameter of 0.50 inches and a head length of 1.25 inches provide clearance geometry suited to through-bore and blind-bore threading passes. The 3\/8-inch insert inscribed circle (3IR inserts) is a widely used size in threading tooling systems, giving operators access to a broad range of thread-form inserts.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRight-hand NVRC-style toolholder for internal threading applications\u003c\/li\u003e\n\u003cli\u003eAccepts 3IR inserts secured by screw-clamp method\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports chip flushing and extended insert life\u003c\/li\u003e\n\u003cli\u003eMinimum bore diameter of 0.67 inches for medium-bore threading access\u003c\/li\u003e\n\u003cli\u003e3\/4-inch shank width and 5.75-inch shank length provide rigid setup in standard turning center turrets\u003c\/li\u003e\n\u003cli\u003eOverall length of 7 inches accommodates reach requirements in typical lathe configurations\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use with 3IR threading inserts in screw-clamp indexable toolholder systems. Fits standard 3\/4-inch boring bar pockets on CNC lathes and turning centers configured for internal threading.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist following the machine tool manufacturer guidelines and applicable shop safety procedures. Power down and lock out the machine before mounting or removing the toolholder from the turret. Confirm insert seating and screw torque per the insert manufacturer specification before running. Verify coolant-through supply lines are connected and unobstructed before engaging the coolant system.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal\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: NVRC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: 3IR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Inscribed Circle\u003c\/strong\u003e: 3\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Screw\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Width\/Diameter\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Height\u003c\/strong\u003e: 0.67 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 5.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.67 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHead Length\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Depth of Cut\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNeck Diameter\u003c\/strong\u003e: 0.50 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter to Cutting Edge\u003c\/strong\u003e: 0.40 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack of Bar to Cutting Edge\u003c\/strong\u003e: 16.51 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Tool Application\u003c\/strong\u003e: Threading\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23291800\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 66238\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VARGUS","offers":[{"title":"Default Title","offer_id":67911782990130,"sku":"66238","price":188.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/460bdbb65e12541823a4e220cc68251e_41c0c155-b0cb-496d-bed6-5b50f05dd746.jpg?v=1791219399","url":"https:\/\/voomisupply.com\/products\/vargus-66238-internal-threading-toolholder-3-4-in-shank","provider":"Voomi Supply","version":"1.0","type":"link"}