{"product_id":"scientific-cutting-tools-tmlr186-28a-thread-mill-1-4-28","title":"Scientific Cutting Tools TMLR186-28A Thread Mill 1\/4-28","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SCIENTIFIC CUTTING TOOLS TMLR186-28A is a helical flute thread mill designed for cutting internal 1\/4-28 UNF threads in a CNC machining environment. It features a solid submicron carbide construction with an AlTiN+ coating for extended tool life in ferrous and hard materials. The cutting diameter is 0.1860 inches with a 0.5000-inch length of cut, making it well suited for threading applications that require precision and consistency. Three right-hand flutes provide efficient chip evacuation. The 2.5-inch overall length and long-reach design give clearance for deep-bore threading operations.\u003c\/p\u003e\n\u003cp\u003eThis thread mill is used in production and job-shop CNC milling operations where internal UNF threads must be cut with high accuracy and repeatability. The long-reach geometry makes it appropriate for applications where standard-length tools cannot access the thread zone. It is commonly installed by CNC machinists and tooling specialists working in aerospace, automotive, defense, and general precision manufacturing environments where 1\/4-28 internal threads are specified.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCuts 1\/4-28 UNF internal threads at 28 teeth per inch\u003c\/li\u003e\n  \u003cli\u003eSolid submicron carbide substrate for rigidity and wear resistance\u003c\/li\u003e\n  \u003cli\u003eAlTiN+ coating improves heat resistance and tool longevity in hard materials\u003c\/li\u003e\n  \u003cli\u003eThree right-hand helical flutes for smooth cutting action and chip clearance\u003c\/li\u003e\n  \u003cli\u003eLong-reach thread mill type provides access in deep or obstructed bores\u003c\/li\u003e\n  \u003cli\u003e0.1860-inch cutting diameter with 0.5000-inch length of cut\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style thread mill for CNC machining centers capable of helical interpolation and accepting a 1\/4-inch shank diameter toolholder.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThread mills of this type are installed by qualified CNC machinists in standard 1\/4-inch collet or end mill holders. Confirm runout on the toolholder before use, as excessive runout will degrade thread quality and accelerate wear. Program helical interpolation at the correct pitch and direction for 1\/4-28 UNF internal threads. Do not use this tool in handheld or manual milling operations.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/4-28\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: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTeeth Per Inch\u003c\/strong\u003e: 28\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.1860 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.5000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.5000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2500 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\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  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23242117\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: TMLR186-28A\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SCIENTIFIC CUTTING TOOLS","offers":[{"title":"Default Title","offer_id":51998179590450,"sku":"TMLR186-28A","price":140.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b88fa4f04f667ce6dc1e650efb598e80_f7137905-4f31-4342-82b3-fa56486b130f.jpg?v=1789994683","url":"https:\/\/voomisupply.com\/products\/scientific-cutting-tools-tmlr186-28a-thread-mill-1-4-28","provider":"Voomi Supply","version":"1.0","type":"link"}