{"product_id":"kennametal-1288937-threading-toolholder-internal-right-hand","title":"Kennametal 1288937 Threading Toolholder Internal Right Hand","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 1288937 is an indexable threading toolholder designed for internal threading operations on CNC lathes and turning centers. Built from steel, this right-hand holder accepts LT 16NR inserts secured by a clamp-style holding method. The shank measures 0.75 inches in both width and height, with an overall length of 7 inches (177.80 mm). A minimum bore diameter of 0.90 inches makes it suited for internal thread cutting in bored or pre-drilled workpieces. It belongs to the LT Threading series and is intended for use by machinists and toolroom professionals working in production or job-shop environments.\u003c\/p\u003e\u003cp\u003eThis toolholder is used in internal threading applications where a rigid, repeatable insert platform is required. The back-of-bar to cutting edge and center-to-cutting-edge distances are both 0.51 inches, providing consistent geometry for thread-form accuracy. The holder does not include coolant-through capability, making it appropriate for setups where external coolant delivery or dry cutting is used. It fits standard tool turrets and boring bar holders that accept a 0.75-inch round shank.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eInternal, right-hand threading configuration for lathe and turning center use\u003c\/li\u003e\n\u003cli\u003eLT 16NR insert compatibility with clamp-style insert retention\u003c\/li\u003e\n\u003cli\u003eSteel construction for rigidity and durability under interrupted and continuous cuts\u003c\/li\u003e\n\u003cli\u003e0.75-inch square shank fits standard tool turret and boring bar positions\u003c\/li\u003e\n\u003cli\u003e3\/8-inch insert inscribed circle for LT series threading inserts\u003c\/li\u003e\n\u003cli\u003eOverall length of 7 inches with 0.51-inch center-to-cutting-edge offset\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-fit toolholder for setups using LT 16NR series threading inserts in internal threading applications on CNC turning equipment with a 0.75-inch shank tool station.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist with the machine powered off and in a safe, locked-out state. Secure the shank fully within the tool turret or boring bar holder using the appropriate clamping torque for your machine's tool station. Verify insert seating and clamp engagement before resuming operation. Confirm thread-form geometry against part specifications before committing to production runs.\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: S12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: LT Threading\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Compatibility\u003c\/strong\u003e: LT 16NR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert Holding Method\u003c\/strong\u003e: Clamp\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\u003eShank Width\/Diameter\u003c\/strong\u003e: 0.75 inches (19.05 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Height\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 7.00 inches (177.80 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum Bore Diameter\u003c\/strong\u003e: 0.90 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBack of Bar to Cutting Edge\u003c\/strong\u003e: 0.51 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter to Cutting Edge\u003c\/strong\u003e: 0.51 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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: 0.72 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: KENNAMETAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1288937\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51753722904882,"sku":"1288937","price":388.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/68a80861dee3456bc30811dca84789f3.jpg?v=1788940018","url":"https:\/\/voomisupply.com\/products\/kennametal-1288937-threading-toolholder-internal-right-hand","provider":"Voomi Supply","version":"1.0","type":"link"}