{"product_id":"osg-1664500811-helical-flute-thread-mill-1-2-unc-4-flute","title":"Osg 1664500811 Helical Flute Thread Mill 1\/2 Unc 4 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1664500811 is a solid carbide helical flute thread mill designed for cutting 1\/2-inch UNC internal threads in a wide range of workpiece materials. It operates on a CNC machining center using interpolated helical motion to produce a full thread form in a single pass. The 4-flute, right-hand cutting geometry paired with a DUROREY coating delivers extended tool life in demanding production environments. With a 0.362-inch cutting diameter and a 3.5-inch overall length, this long-reach tool reaches into deep bores where standard thread mills cannot. Left-hand thread direction allows climb-milling of right-hand threads in the conventional interpolation direction.\u003c\/p\u003e\n\u003cp\u003eThis thread mill is suited for job shop and production machining applications requiring 1\/2 UNC threads. The long-reach design makes it appropriate for deep-pocket threading on fixtures, housings, manifolds, and structural components. Coolant-through capability supports high-speed operation in steel, aluminum, stainless, and similar materials by flushing chips away from the cutting zone. It is installed and run by machinists and CNC programmers following standard helical interpolation routines on 3-axis or multi-axis machining centers.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and wear resistance in production threading\u003c\/li\u003e\n  \u003cli\u003eDUROREY coating extends tool life and reduces friction in ferrous and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design flushes chips from deep-bore thread forms\u003c\/li\u003e\n  \u003cli\u003eLong-reach thread mill type allows threading in recessed or deep-pocket features\u003c\/li\u003e\n  \u003cli\u003eLeft-hand thread direction with right-hand flute geometry for conventional helical interpolation of right-hand UNC threads\u003c\/li\u003e\n  \u003cli\u003e13 TPI matches standard 1\/2-13 UNC thread form\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use on CNC machining centers capable of helical interpolation, producing 1\/2-13 UNC internal threads. Compatible with standard ER or hydraulic toolholders accepting a 3\/8-inch shank diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall in a clean, properly sized collet or toolholder that accepts a 3\/8-inch shank; verify runout before cutting. Program the helical interpolation path to match the 0.362-inch cutting diameter and the thread pitch of 13 TPI. Engage coolant-through supply at the spindle before starting the cut to ensure chip evacuation throughout the 0.2308-inch length of cut. Do not use this tool for conventional drill-and-tap operations; it requires helical interpolation motion on a CNC machine.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeeth Per Inch (TPI)\u003c\/strong\u003e: 13\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.362 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.2308 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.1921 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Left Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Mill Type\u003c\/strong\u003e: Long Reach\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: DUROREY\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 16645\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.105 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 3.1 inches L x 0.65 inches W x 0.55 inches H\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: OSG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1664500811\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51730773213490,"sku":"1664500811","price":497.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1738868886c9251aacaa093a2729fabf.jpg?v=1788722621","url":"https:\/\/voomisupply.com\/products\/osg-1664500811-helical-flute-thread-mill-1-2-unc-4-flute","provider":"Voomi Supply","version":"1.0","type":"link"}