{"product_id":"scientific-cutting-tools-tmlr082-40ela-thread-mill-4-40-unc","title":"Scientific Cutting Tools TMLR082-40ELA Thread Mill 4-40 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SCIENTIFIC CUTTING TOOLS TMLR082-40ELA is a helical flute thread mill designed for cutting internal 4-40 UNC threads in a CNC machining environment. Built from submicron-grade solid carbide and finished with an AlTiN+ coating, this tool delivers consistent thread geometry and extended tool life in ferrous and non-ferrous materials. The 0.082-inch cutting diameter and 0.3-inch length of cut make it well suited for small-diameter internal threading where tap breakage is a concern. With a 2.5-inch overall length and long-reach configuration, it accesses threads in recessed features without requiring a secondary reach extension.\u003c\/p\u003e\n\u003cp\u003eThis thread mill is used in production and job-shop CNC milling operations wherever precise 4-40 UNC internal threads are required. The long-reach design is particularly useful for aerospace, medical device, and precision instrument components that require threaded holes in deep cavities or stepped bores. The right-hand flute direction and 40 TPI specification align with standard UNC 4-40 fastener requirements. It is installed and run by machinists and CNC programmers operating 3-axis or higher machining centers capable of helical interpolation.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSubmicron-grade solid carbide construction for rigidity and wear resistance in small-diameter threading\u003c\/li\u003e\n  \u003cli\u003eAlTiN+ coating reduces heat buildup and extends tool life in hardened and abrasive materials\u003c\/li\u003e\n  \u003cli\u003e0.082-inch cutting diameter with 0.3-inch length of cut for 4-40 UNC internal thread profiles\u003c\/li\u003e\n  \u003cli\u003eLong-reach thread mill type allows threading in recessed or deep-cavity features\u003c\/li\u003e\n  \u003cli\u003e3-flute, right-hand helical design for smooth chip evacuation and consistent thread form\u003c\/li\u003e\n  \u003cli\u003e40 TPI pitch matches standard UNC 4-40 fastener specifications\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 to produce 4-40 UNC internal threads. Thread form and pitch are consistent with standard UNC 4-40 fastener specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tool is installed and operated by machinists or CNC programmers on a machining center with helical interpolation capability. Secure the 1\/4-inch shank in a precision collet or end mill holder and verify runout before threading operations. Program the helical interpolation path to match the 4-40 UNC thread pitch and cutting diameter. Coolant-through is not supported on this tool, so ensure adequate flood or mist coolant is directed at the cutting zone during operation.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 4-40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeeth Per Inch (TPI)\u003c\/strong\u003e: 40\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.082 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut (LOC)\u003c\/strong\u003e: 0.3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right 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\u003eMaterial Grade\u003c\/strong\u003e: Submicron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: AlTiN+\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: 0.05 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: SCIENTIFIC CUTTING TOOLS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: TMLR082-40ELA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCIENTIFIC CUTTING TOOLS","offers":[{"title":"Default Title","offer_id":52092089532722,"sku":"TMLR082-40ELA","price":141.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ce2c96444818994c5db334ff45111634.jpg?v=1790063598","url":"https:\/\/voomisupply.com\/products\/scientific-cutting-tools-tmlr082-40ela-thread-mill-4-40-unc","provider":"Voomi Supply","version":"1.0","type":"link"}