{"product_id":"scientific-cutting-tools-tm235-40a-thread-mill-5-16-40","title":"Scientific Cutting Tools TM235-40A Thread Mill 5\/16-40","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SCIENTIFIC CUTTING TOOLS TM235-40A is a straight flute thread mill designed for cutting internal 5\/16-40 UNS 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 nonferrous materials. It features 3 flutes, a 0.235-inch cutting diameter, and a 1\/4-inch shank diameter. With an overall length of 2.5 inches and a 0.66-inch length of cut, the TM235-40A suits tight-tolerance thread milling operations where tap breakage and chip evacuation are primary concerns for machinists and toolroom technicians.\u003c\/p\u003e\u003cp\u003eThis thread mill is suited for use on CNC machining centers with helical interpolation capability. It is intended for internal thread applications at 40 teeth per inch, with a minimum nominal diameter of 5\/16 inch. Typical applications include production machining of threaded holes in aerospace, automotive, and general industrial components where solid carbide tooling is specified for hard or abrasive workpiece materials. No coolant-through capability means external coolant or mist lubrication should be applied at the cutting zone during operation.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eStraight flute geometry for internal 5\/16-40 UNS thread milling\u003c\/li\u003e\n\u003cli\u003eSubmicron-grade solid carbide substrate for rigidity and wear resistance\u003c\/li\u003e\n\u003cli\u003eAlTiN+ coating for elevated-temperature performance and extended tool life\u003c\/li\u003e\n\u003cli\u003e3 flutes provide a balance of chip clearance and cutting edge support\u003c\/li\u003e\n\u003cli\u003e1\/4-inch shank diameter compatible with standard ER and precision collet toolholders\u003c\/li\u003e\n\u003cli\u003eNo coolant-through design simplifies toolholder selection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a straight flute thread mill for internal 5\/16-40 UNS threaded holes, compatible with CNC machining centers equipped with helical interpolation and standard 1\/4-inch collet or end mill toolholders.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and operation should be performed by a qualified CNC machinist or toolroom technician. Secure the 1\/4-inch shank in a precision collet or shrink-fit toolholder to minimize runout before thread milling. Program the machining center for helical interpolation at the correct thread pitch before initiating the cut. Apply appropriate external coolant or mist lubrication at the cutting zone, as this tool does not include coolant-through passages.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Type\u003c\/strong\u003e: Internal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTeeth Per Inch\u003c\/strong\u003e: 40\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.235 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\u003eLength of Cut\u003c\/strong\u003e: 0.66 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: 5\/16 inches\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\u003c\/strong\u003e: AlTiN+\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStaggered Tooth\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: TM235-40A\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCIENTIFIC CUTTING TOOLS","offers":[{"title":"Default Title","offer_id":52003976806706,"sku":"TM235-40A","price":168.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d675f1603cfe9177388c191e609b03b5.jpg?v=1789999216","url":"https:\/\/voomisupply.com\/products\/scientific-cutting-tools-tm235-40a-thread-mill-5-16-40","provider":"Voomi Supply","version":"1.0","type":"link"}