{"product_id":"regal-cutting-tools-085909tm-thread-mill-5-16-18-3-flute","title":"Regal Cutting Tools 085909TM Thread Mill 5\/16-18 3 Flute","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe REGAL CUTTING TOOLS 085909TM is a helical flute thread mill designed for cutting 5\/16-18 UN threads in both internal and external applications. Built from sub-micrograin solid carbide and coated with AlTiN, it handles demanding cutting conditions in ferrous and non-ferrous materials. The 3-flute, right-hand flute geometry delivers clean thread profiles at 18 TPI. With a 0.235-inch cutting diameter and 0.625-inch length of cut, it suits tight-tolerance threading operations on machining centers and CNC mills. The 1\/4-inch shank fits standard toolholders, and the 2.5-inch overall length provides adequate reach for most fixturing setups. Installed by machinists and tool-and-die professionals in production and job-shop environments.\u003c\/p\u003e\n\u003cp\u003eThis thread mill is suited for threading operations where a single tool must cut both internal and external 5\/16-18 UN threads, eliminating the need to swap between a tap and an external threading tool. It is a practical choice for CNC machining centers running aluminum, steel, stainless, and similar materials where AlTiN coating helps manage heat and extend tool life. The 1.875-inch shank length provides stable clamping in collet chucks and end-mill holders. It is appropriate for both prototype work and production runs requiring consistent thread quality.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCuts 5\/16-18 UN threads in both internal and external applications with a single tool\u003c\/li\u003e\n  \u003cli\u003eSub-micrograin solid carbide construction for rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating reduces heat buildup and extends tool life in ferrous materials\u003c\/li\u003e\n  \u003cli\u003e3-flute, right-hand helical geometry for efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003e0.235-inch cutting diameter with 0.625-inch length of cut for controlled thread engagement\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through design  -  compatible with external flood or mist coolant setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use on CNC machining centers with standard 1\/4-inch collet chucks or end-mill holders capable of accepting a 1\/4-inch shank. Cuts 5\/16-18 UN thread form in internal and external configurations.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread mills require helical interpolation programmed at the CNC control  -  confirm the machine supports this cycle before setup. Secure the 1\/4-inch shank with adequate collet clamping torque per the toolholder manufacturer's specification. Verify runout at the cutting diameter before starting production cuts, as excessive runout will directly affect thread quality and tool life. This tool does not have coolant-through capability, so direct external coolant or mist at the cutting zone to manage chip evacuation and heat.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal and External\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeeth Per Inch (TPI)\u003c\/strong\u003e: 18\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\u003eCutting Diameter\u003c\/strong\u003e: 0.235 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.625 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\u003eShank Length\u003c\/strong\u003e: 1.875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Nominal Diameter\u003c\/strong\u003e: 0.3125 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide (Sub Micrograin)\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: 0.5 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: REGAL CUTTING TOOLS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 085909TM\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"REGAL CUTTING TOOLS","offers":[{"title":"Default Title","offer_id":67907266871602,"sku":"085909TM","price":125.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/be7d0dfaad610131e985a33b4f426906.jpg?v=1791176041","url":"https:\/\/voomisupply.com\/products\/regal-cutting-tools-085909tm-thread-mill-5-16-18-3-flute","provider":"Voomi Supply","version":"1.0","type":"link"}